[PATCH v2 0/3] Fix some AIO context locking in jobs

[PATCH v2 0/3] Fix some AIO context locking in jobs

[Stefan Reiter]

Contains three seperate but related patches cleaning up and fixing some
issues regarding aio_context_acquire/aio_context_release for jobs. Mostly
affects blockjobs running for devices that have IO threads enabled AFAICT.

This is based on the discussions here:
https://lists.gnu.org/archive/html/qemu-devel/2020-03/msg07929.html

I *think* the second patch also fixes the hangs on backup abort that I and
Dietmar noticed in v1, but I'm not sure, they we're somewhat intermittent
before too.

Changes from v1:
* fixed commit message for patch 1
* added patches 2 and 3

Stefan Reiter (3):
  backup: don't acquire aio_context in backup_clean
  job: take each job's lock individually in job_txn_apply
  replication: acquire aio context before calling job_cancel_sync

 block/backup.c      |  4 ----
 block/replication.c |  6 +++++-
 job.c               | 32 ++++++++++++++++++++++++--------
 3 files changed, 29 insertions(+), 13 deletions(-)

-- 
2.26.0

[PATCH v2 1/3] backup: don't acquire aio_context in backup_clean

[Stefan Reiter]

All code-paths leading to backup_clean (via job_clean) have the job's
context already acquired. The job's context is guaranteed to be the same
as the one used by backup_top via backup_job_create.

Since the previous logic effectively acquired the lock twice, this
broke cleanup of backups for disks using IO threads, since the BDRV_POLL_WHILE
in bdrv_backup_top_drop -> bdrv_do_drained_begin would only release the lock
once, thus deadlocking with the IO thread.

This is a partial revert of 0abf2581717a19.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
 block/backup.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/block/backup.c b/block/backup.c
index 7430ca5883..a7a7dcaf4c 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -126,11 +126,7 @@ static void backup_abort(Job *job)
 static void backup_clean(Job *job)
 {
     BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
-    AioContext *aio_context = bdrv_get_aio_context(s->backup_top);
-
-    aio_context_acquire(aio_context);
     bdrv_backup_top_drop(s->backup_top);
-    aio_context_release(aio_context);
 }
 
 void backup_do_checkpoint(BlockJob *job, Error **errp)
-- 
2.26.0

[PATCH v2 2/3] job: take each job's lock individually in job_txn_apply

[Stefan Reiter]

All callers of job_txn_apply hold a single job's lock, but different
jobs within a transaction can have different contexts, thus we need to
lock each one individually before applying the callback function.

Similar to job_completed_txn_abort this also requires releasing the
caller's context before and reacquiring it after to avoid recursive
locks which might break AIO_WAIT_WHILE in the callback.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
 job.c | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

diff --git a/job.c b/job.c
index 134a07b92e..e0966162fa 100644
--- a/job.c
+++ b/job.c
@@ -136,17 +136,33 @@ static void job_txn_del_job(Job *job)
     }
 }
 
-static int job_txn_apply(JobTxn *txn, int fn(Job *))
+static int job_txn_apply(Job *job, int fn(Job *))
 {
-    Job *job, *next;
+    AioContext *outer_ctx = job->aio_context;
+    AioContext *inner_ctx;
+    Job *other_job, *next;
+    JobTxn *txn = job->txn;
     int rc = 0;
 
-    QLIST_FOREACH_SAFE(job, &txn->jobs, txn_list, next) {
-        rc = fn(job);
+    /*
+     * Similar to job_completed_txn_abort, we take each job's lock before
+     * applying fn, but since we assume that outer_ctx is held by the caller,
+     * we need to release it here to avoid holding the lock twice - which would
+     * break AIO_WAIT_WHILE from within fn.
+     */
+    aio_context_release(outer_ctx);
+
+    QLIST_FOREACH_SAFE(other_job, &txn->jobs, txn_list, next) {
+        inner_ctx = other_job->aio_context;
+        aio_context_acquire(inner_ctx);
+        rc = fn(other_job);
+        aio_context_release(inner_ctx);
         if (rc) {
             break;
         }
     }
+
+    aio_context_acquire(outer_ctx);
     return rc;
 }
 
@@ -774,11 +790,11 @@ static void job_do_finalize(Job *job)
     assert(job && job->txn);
 
     /* prepare the transaction to complete */
-    rc = job_txn_apply(job->txn, job_prepare);
+    rc = job_txn_apply(job, job_prepare);
     if (rc) {
         job_completed_txn_abort(job);
     } else {
-        job_txn_apply(job->txn, job_finalize_single);
+        job_txn_apply(job, job_finalize_single);
     }
 }
 
@@ -824,10 +840,10 @@ static void job_completed_txn_success(Job *job)
         assert(other_job->ret == 0);
     }
 
-    job_txn_apply(txn, job_transition_to_pending);
+    job_txn_apply(job, job_transition_to_pending);
 
     /* If no jobs need manual finalization, automatically do so */
-    if (job_txn_apply(txn, job_needs_finalize) == 0) {
+    if (job_txn_apply(job, job_needs_finalize) == 0) {
         job_do_finalize(job);
     }
 }
-- 
2.26.0

[PATCH v2 3/3] replication: acquire aio context before calling job_cancel_sync

[Stefan Reiter]

job_cancel_sync requires the job's lock to be held, all other callers
already do this (replication_stop, drive_backup_abort,
blockdev_backup_abort, job_cancel_sync_all, cancel_common).

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
 block/replication.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/block/replication.c b/block/replication.c
index 413d95407d..6c809cda4e 100644
--- a/block/replication.c
+++ b/block/replication.c
@@ -144,12 +144,16 @@ fail:
 static void replication_close(BlockDriverState *bs)
 {
     BDRVReplicationState *s = bs->opaque;
+    Job *commit_job = &s->commit_job->job;
+    AioContext *commit_ctx = commit_job->aio_context;
 
     if (s->stage == BLOCK_REPLICATION_RUNNING) {
         replication_stop(s->rs, false, NULL);
     }
     if (s->stage == BLOCK_REPLICATION_FAILOVER) {
-        job_cancel_sync(&s->commit_job->job);
+        aio_context_acquire(commit_ctx);
+        job_cancel_sync(commit_job);
+        aio_context_release(commit_ctx);
     }
 
     if (s->mode == REPLICATION_MODE_SECONDARY) {
-- 
2.26.0

Re: [PATCH v2 0/3] Fix some AIO context locking in jobs

[no-reply]

Patchew URL: https://patchew.org/QEMU/20200326155628.859862-1-s.reiter@proxmox.com/



Hi,

This series failed the docker-quick@centos7 build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
make docker-image-centos7 V=1 NETWORK=1
time make docker-test-quick@centos7 SHOW_ENV=1 J=14 NETWORK=1
=== TEST SCRIPT END ===

  TEST    check-unit: tests/test-bdrv-graph-mod
  TEST    check-unit: tests/test-blockjob
qemu: qemu_mutex_unlock_impl: Operation not permitted
ERROR - too few tests run (expected 8, got 7)
make: *** [check-unit] Error 1
make: *** Waiting for unfinished jobs....
  TEST    iotest-qcow2: 020
  TEST    iotest-qcow2: 021
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--label', 'com.qemu.instance.uuid=2724b2af546443c7a60d0f061f1beab7', '-u', '1003', '--security-opt', 'seccomp=unconfined', '--rm', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=1', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew2/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-7887uhcy/src/docker-src.2020-03-26-12.56.41.28979:/var/tmp/qemu:z,ro', 'qemu:centos7', '/var/tmp/qemu/run', 'test-quick']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=2724b2af546443c7a60d0f061f1beab7
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-7887uhcy/src'
make: *** [docker-run-test-quick@centos7] Error 2

real    14m17.758s
user    0m8.171s


The full log is available at
http://patchew.org/logs/20200326155628.859862-1-s.reiter@proxmox.com/testing.docker-quick@centos7/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com

Re: [PATCH v2 0/3] Fix some AIO context locking in jobs

[no-reply]

Patchew URL: https://patchew.org/QEMU/20200326155628.859862-1-s.reiter@proxmox.com/



Hi,

This series failed the asan build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
export ARCH=x86_64
make docker-image-fedora V=1 NETWORK=1
time make docker-test-debug@fedora TARGET_LIST=x86_64-softmmu J=14 NETWORK=1
=== TEST SCRIPT END ===

PASS 1 fdc-test /x86_64/fdc/cmos
PASS 2 fdc-test /x86_64/fdc/no_media_on_start
PASS 3 fdc-test /x86_64/fdc/read_without_media
==6158==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 fdc-test /x86_64/fdc/media_change
PASS 5 fdc-test /x86_64/fdc/sense_interrupt
PASS 6 fdc-test /x86_64/fdc/relative_seek
---
PASS 32 test-opts-visitor /visitor/opts/range/beyond
PASS 33 test-opts-visitor /visitor/opts/dict/unvisited
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-coroutine -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-coroutine" 
==6219==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6219==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffcb9e2d000; bottom 0x7fc4e5420000; size: 0x0037d4a0d000 (239790510080)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 1 test-coroutine /basic/no-dangling-access
---
PASS 11 test-aio /aio/event/wait
PASS 12 test-aio /aio/event/flush
PASS 13 test-aio /aio/event/wait/no-flush-cb
==6234==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 14 test-aio /aio/timer/schedule
PASS 15 test-aio /aio/coroutine/queue-chaining
PASS 16 test-aio /aio-gsource/flush
---
PASS 12 fdc-test /x86_64/fdc/read_no_dma_19
PASS 13 fdc-test /x86_64/fdc/fuzz-registers
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/ide-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="ide-test" 
==6242==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 28 test-aio /aio-gsource/timer/schedule
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-aio-multithread -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-aio-multithread" 
PASS 1 ide-test /x86_64/ide/identify
==6249==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 test-aio-multithread /aio/multi/lifecycle
==6251==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 2 ide-test /x86_64/ide/flush
PASS 2 test-aio-multithread /aio/multi/schedule
==6268==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 ide-test /x86_64/ide/bmdma/simple_rw
==6279==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 test-aio-multithread /aio/multi/mutex/contended
PASS 4 ide-test /x86_64/ide/bmdma/trim
==6290==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 test-aio-multithread /aio/multi/mutex/handoff
PASS 5 test-aio-multithread /aio/multi/mutex/mcs
PASS 6 test-aio-multithread /aio/multi/mutex/pthread
---
PASS 6 test-throttle /throttle/detach_attach
PASS 7 test-throttle /throttle/config_functions
PASS 8 test-throttle /throttle/accounting
==6307==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 9 test-throttle /throttle/groups
PASS 10 test-throttle /throttle/config/enabled
PASS 11 test-throttle /throttle/config/conflicting
---
PASS 14 test-throttle /throttle/config/max
PASS 15 test-throttle /throttle/config/iops_size
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-thread-pool -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-thread-pool" 
==6311==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 test-thread-pool /thread-pool/submit
PASS 2 test-thread-pool /thread-pool/submit-aio
PASS 3 test-thread-pool /thread-pool/submit-co
PASS 4 test-thread-pool /thread-pool/submit-many
==6378==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 5 test-thread-pool /thread-pool/cancel
PASS 6 test-thread-pool /thread-pool/cancel-async
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-hbitmap -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-hbitmap" 
---
PASS 15 test-hbitmap /hbitmap/set/overlap
PASS 16 test-hbitmap /hbitmap/reset/empty
PASS 17 test-hbitmap /hbitmap/reset/general
==6388==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 18 test-hbitmap /hbitmap/reset/all
PASS 19 test-hbitmap /hbitmap/truncate/nop
PASS 20 test-hbitmap /hbitmap/truncate/grow/negligible
---
PASS 39 test-hbitmap /hbitmap/next_dirty_area/next_dirty_area_4
PASS 40 test-hbitmap /hbitmap/next_dirty_area/next_dirty_area_after_truncate
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-bdrv-drain -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-bdrv-drain" 
==6395==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 test-bdrv-drain /bdrv-drain/nested
PASS 2 test-bdrv-drain /bdrv-drain/multiparent
PASS 3 test-bdrv-drain /bdrv-drain/set_aio_context
---
PASS 41 test-bdrv-drain /bdrv-drain/bdrv_drop_intermediate/poll
PASS 42 test-bdrv-drain /bdrv-drain/replace_child/mid-drain
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-bdrv-graph-mod -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-bdrv-graph-mod" 
==6434==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 test-bdrv-graph-mod /bdrv-graph-mod/update-perm-tree
PASS 2 test-bdrv-graph-mod /bdrv-graph-mod/should-update-child
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  tests/test-blockjob -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-blockjob" 
==6438==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 test-blockjob /blockjob/ids
PASS 2 test-blockjob /blockjob/cancel/created
PASS 3 test-blockjob /blockjob/cancel/running
---
PASS 6 test-blockjob /blockjob/cancel/standby
PASS 7 test-blockjob /blockjob/cancel/pending
qemu: qemu_mutex_unlock_impl: Operation not permitted
ERROR - too few tests run (expected 8, got 7)
make: *** [/tmp/qemu-test/src/tests/Makefile.include:641: check-unit] Error 1
make: *** Waiting for unfinished jobs....
==6441==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6447==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6453==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6459==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6465==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6471==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 5 ide-test /x86_64/ide/bmdma/various_prdts
==6477==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6477==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffd0a8ae000; bottom 0x7f67611fe000; size: 0x0095a96b0000 (642792488960)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 6 ide-test /x86_64/ide/bmdma/no_busmaster
PASS 7 ide-test /x86_64/ide/flush/nodev
==6488==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 8 ide-test /x86_64/ide/flush/empty_drive
==6493==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 9 ide-test /x86_64/ide/flush/retry_pci
==6499==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 10 ide-test /x86_64/ide/flush/retry_isa
==6505==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 11 ide-test /x86_64/ide/cdrom/pio
==6511==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 12 ide-test /x86_64/ide/cdrom/pio_large
==6517==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 13 ide-test /x86_64/ide/cdrom/dma
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/ahci-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="ahci-test" 
==6531==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 ahci-test /x86_64/ahci/sanity
==6537==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 2 ahci-test /x86_64/ahci/pci_spec
==6543==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 ahci-test /x86_64/ahci/pci_enable
==6549==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 ahci-test /x86_64/ahci/hba_spec
==6555==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 5 ahci-test /x86_64/ahci/hba_enable
==6561==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 6 ahci-test /x86_64/ahci/identify
==6567==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 7 ahci-test /x86_64/ahci/max
==6573==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 8 ahci-test /x86_64/ahci/reset
==6579==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6579==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffcd00ca000; bottom 0x7fe11a1fe000; size: 0x001bb5ecc000 (119016308736)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 9 ahci-test /x86_64/ahci/io/pio/lba28/simple/zero
==6585==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6585==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffc0555c000; bottom 0x7f07f3dfe000; size: 0x00f41175e000 (1048264957952)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 10 ahci-test /x86_64/ahci/io/pio/lba28/simple/low
==6591==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6591==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffd3ad22000; bottom 0x7f0104bfe000; size: 0x00fc36124000 (1083238924288)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 11 ahci-test /x86_64/ahci/io/pio/lba28/simple/high
==6597==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6597==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffee2f2f000; bottom 0x7fe9e45fe000; size: 0x0014fe931000 (90170396672)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 12 ahci-test /x86_64/ahci/io/pio/lba28/double/zero
==6603==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6603==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7fff5c6f4000; bottom 0x7f92adffe000; size: 0x006cae6f6000 (466783002624)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 13 ahci-test /x86_64/ahci/io/pio/lba28/double/low
==6609==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6609==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffcfacdf000; bottom 0x7f483a7fe000; size: 0x00b4c04e1000 (776320454656)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 14 ahci-test /x86_64/ahci/io/pio/lba28/double/high
==6615==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6615==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffdcd23b000; bottom 0x7f57c5d7c000; size: 0x00a6074bf000 (713086988288)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 15 ahci-test /x86_64/ahci/io/pio/lba28/long/zero
==6621==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6621==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffceb24e000; bottom 0x7f81b697c000; size: 0x007b348d2000 (529162641408)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 16 ahci-test /x86_64/ahci/io/pio/lba28/long/low
==6627==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6627==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffee020a000; bottom 0x7ff8d057c000; size: 0x00060fc8e000 (26034626560)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 17 ahci-test /x86_64/ahci/io/pio/lba28/long/high
==6633==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 18 ahci-test /x86_64/ahci/io/pio/lba28/short/zero
==6639==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 19 ahci-test /x86_64/ahci/io/pio/lba28/short/low
==6645==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 20 ahci-test /x86_64/ahci/io/pio/lba28/short/high
==6651==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6651==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffcefe0e000; bottom 0x7f8db4dfe000; size: 0x006f3b010000 (477731291136)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 21 ahci-test /x86_64/ahci/io/pio/lba48/simple/zero
==6657==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6657==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffe703e1000; bottom 0x7fe1129fe000; size: 0x001d5d9e3000 (126124699648)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 22 ahci-test /x86_64/ahci/io/pio/lba48/simple/low
==6663==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6663==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffc1268b000; bottom 0x7eff8c9fe000; size: 0x00fc85c8d000 (1084576288768)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 23 ahci-test /x86_64/ahci/io/pio/lba48/simple/high
==6669==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6669==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7fff6761f000; bottom 0x7fb765ffe000; size: 0x004801621000 (309260849152)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 24 ahci-test /x86_64/ahci/io/pio/lba48/double/zero
==6675==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6675==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffd4c56d000; bottom 0x7feb961fe000; size: 0x0011b636f000 (76071497728)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 25 ahci-test /x86_64/ahci/io/pio/lba48/double/low
==6681==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6681==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7fffa052d000; bottom 0x7fa36f7fe000; size: 0x005c30d2f000 (395956121600)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 26 ahci-test /x86_64/ahci/io/pio/lba48/double/high
==6687==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6687==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7fffb6f82000; bottom 0x7f0e8b924000; size: 0x00f12b65e000 (1035815215104)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 27 ahci-test /x86_64/ahci/io/pio/lba48/long/zero
==6693==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6693==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffccf36c000; bottom 0x7f10fab7c000; size: 0x00ebd47f0000 (1012882407424)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 28 ahci-test /x86_64/ahci/io/pio/lba48/long/low
==6699==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6699==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffda8c9f000; bottom 0x7f6f2a3fe000; size: 0x008e7e8a1000 (612008333312)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 29 ahci-test /x86_64/ahci/io/pio/lba48/long/high
==6705==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 30 ahci-test /x86_64/ahci/io/pio/lba48/short/zero
==6711==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 31 ahci-test /x86_64/ahci/io/pio/lba48/short/low
==6717==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 32 ahci-test /x86_64/ahci/io/pio/lba48/short/high
==6723==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 33 ahci-test /x86_64/ahci/io/dma/lba28/fragmented
==6729==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 34 ahci-test /x86_64/ahci/io/dma/lba28/retry
==6735==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 35 ahci-test /x86_64/ahci/io/dma/lba28/simple/zero
==6741==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 36 ahci-test /x86_64/ahci/io/dma/lba28/simple/low
==6747==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 37 ahci-test /x86_64/ahci/io/dma/lba28/simple/high
==6753==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 38 ahci-test /x86_64/ahci/io/dma/lba28/double/zero
==6759==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 39 ahci-test /x86_64/ahci/io/dma/lba28/double/low
==6765==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 40 ahci-test /x86_64/ahci/io/dma/lba28/double/high
==6771==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6771==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffc438a9000; bottom 0x7f685fdfd000; size: 0x0093e3aac000 (635179810816)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 41 ahci-test /x86_64/ahci/io/dma/lba28/long/zero
==6778==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6778==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffcaa8c8000; bottom 0x7fa0649fd000; size: 0x005c45ecb000 (396310130688)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 42 ahci-test /x86_64/ahci/io/dma/lba28/long/low
==6785==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6785==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7fffae6ae000; bottom 0x7f7a74523000; size: 0x00853a18b000 (572205346816)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 43 ahci-test /x86_64/ahci/io/dma/lba28/long/high
==6792==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 44 ahci-test /x86_64/ahci/io/dma/lba28/short/zero
==6798==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 45 ahci-test /x86_64/ahci/io/dma/lba28/short/low
==6804==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 46 ahci-test /x86_64/ahci/io/dma/lba28/short/high
==6810==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 47 ahci-test /x86_64/ahci/io/dma/lba48/simple/zero
==6816==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 48 ahci-test /x86_64/ahci/io/dma/lba48/simple/low
==6822==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 49 ahci-test /x86_64/ahci/io/dma/lba48/simple/high
==6828==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 50 ahci-test /x86_64/ahci/io/dma/lba48/double/zero
==6834==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 51 ahci-test /x86_64/ahci/io/dma/lba48/double/low
==6840==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 52 ahci-test /x86_64/ahci/io/dma/lba48/double/high
==6846==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6846==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffc6ec83000; bottom 0x7f25643fd000; size: 0x00d70a886000 (923594678272)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 53 ahci-test /x86_64/ahci/io/dma/lba48/long/zero
==6853==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6853==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffc96137000; bottom 0x7f55fb1fd000; size: 0x00a69af3a000 (715564228608)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 54 ahci-test /x86_64/ahci/io/dma/lba48/long/low
==6860==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6860==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7fff6ec3a000; bottom 0x7f192d7fd000; size: 0x00e64143d000 (988937441280)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 55 ahci-test /x86_64/ahci/io/dma/lba48/long/high
==6867==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 56 ahci-test /x86_64/ahci/io/dma/lba48/short/zero
==6873==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 57 ahci-test /x86_64/ahci/io/dma/lba48/short/low
==6879==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 58 ahci-test /x86_64/ahci/io/dma/lba48/short/high
==6885==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 59 ahci-test /x86_64/ahci/io/ncq/simple
==6891==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 60 ahci-test /x86_64/ahci/io/ncq/retry
==6897==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 61 ahci-test /x86_64/ahci/flush/simple
==6903==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 62 ahci-test /x86_64/ahci/flush/retry
==6909==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6915==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 63 ahci-test /x86_64/ahci/flush/migrate
==6923==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6929==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 64 ahci-test /x86_64/ahci/migrate/sanity
==6937==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6943==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 65 ahci-test /x86_64/ahci/migrate/dma/simple
==6951==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6957==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 66 ahci-test /x86_64/ahci/migrate/dma/halted
==6965==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6971==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 67 ahci-test /x86_64/ahci/migrate/ncq/simple
==6979==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==6985==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 68 ahci-test /x86_64/ahci/migrate/ncq/halted
==6993==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 69 ahci-test /x86_64/ahci/cdrom/eject
==6998==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 70 ahci-test /x86_64/ahci/cdrom/dma/single
==7004==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 71 ahci-test /x86_64/ahci/cdrom/dma/multi
==7010==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 72 ahci-test /x86_64/ahci/cdrom/pio/single
==7016==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7016==WARNING: ASan is ignoring requested __asan_handle_no_return: stack top: 0x7ffc852a8000; bottom 0x7f29c95fe000; size: 0x00d2bbcaa000 (905093750784)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
PASS 73 ahci-test /x86_64/ahci/cdrom/pio/multi
==7022==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 74 ahci-test /x86_64/ahci/cdrom/pio/bcl
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/hd-geo-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="hd-geo-test" 
PASS 1 hd-geo-test /x86_64/hd-geo/ide/none
==7036==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 2 hd-geo-test /x86_64/hd-geo/ide/drive/cd_0
==7042==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 hd-geo-test /x86_64/hd-geo/ide/drive/mbr/blank
==7048==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 hd-geo-test /x86_64/hd-geo/ide/drive/mbr/lba
==7054==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 5 hd-geo-test /x86_64/hd-geo/ide/drive/mbr/chs
==7060==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 6 hd-geo-test /x86_64/hd-geo/ide/device/mbr/blank
==7066==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 7 hd-geo-test /x86_64/hd-geo/ide/device/mbr/lba
==7072==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 8 hd-geo-test /x86_64/hd-geo/ide/device/mbr/chs
==7078==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 9 hd-geo-test /x86_64/hd-geo/ide/device/user/chs
==7083==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 10 hd-geo-test /x86_64/hd-geo/ide/device/user/chst
==7089==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7093==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7097==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7101==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7105==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7109==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7113==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7117==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7120==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 11 hd-geo-test /x86_64/hd-geo/override/ide
==7127==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7131==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7135==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7139==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7143==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7147==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7151==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7155==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7158==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 12 hd-geo-test /x86_64/hd-geo/override/scsi
==7165==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7169==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7173==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7177==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7181==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7185==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7189==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7193==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7196==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 13 hd-geo-test /x86_64/hd-geo/override/scsi_2_controllers
==7203==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7207==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7211==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7215==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7218==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 14 hd-geo-test /x86_64/hd-geo/override/virtio_blk
==7225==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7229==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7232==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 15 hd-geo-test /x86_64/hd-geo/override/zero_chs
==7239==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7243==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7247==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7251==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7254==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 16 hd-geo-test /x86_64/hd-geo/override/scsi_hot_unplug
==7261==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7265==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7269==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7273==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
==7276==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 17 hd-geo-test /x86_64/hd-geo/override/virtio_hot_unplug
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/boot-order-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="boot-order-test" 
PASS 1 boot-order-test /x86_64/boot-order/pc
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7345==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP'
Using expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7351==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP'
Using expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7357==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.bridge'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7363==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.ipmikcs'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7369==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.cphp'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7376==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.memhp'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7382==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.numamem'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7388==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.dimmpxm'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7397==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/pc/FACP.acpihmat'
Looking for expected file 'tests/data/acpi/pc/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7404==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.bridge'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7410==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.mmio64'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7416==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.ipmibt'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7422==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.cphp'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7429==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.memhp'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7435==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.numamem'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7441==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.dimmpxm'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7450==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!

Looking for expected file 'tests/data/acpi/q35/FACP.acpihmat'
Looking for expected file 'tests/data/acpi/q35/FACP'
---
PASS 1 i440fx-test /x86_64/i440fx/defaults
PASS 2 i440fx-test /x86_64/i440fx/pam
PASS 3 i440fx-test /x86_64/i440fx/firmware/bios
==7542==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 i440fx-test /x86_64/i440fx/firmware/pflash
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/fw_cfg-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="fw_cfg-test" 
PASS 1 fw_cfg-test /x86_64/fw_cfg/signature
---
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/drive_del-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="drive_del-test" 
PASS 1 drive_del-test /x86_64/drive_del/without-dev
PASS 2 drive_del-test /x86_64/drive_del/after_failed_device_add
==7635==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 drive_del-test /x86_64/blockdev/drive_del_device_del
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/wdt_ib700-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="wdt_ib700-test" 
PASS 1 wdt_ib700-test /x86_64/wdt_ib700/pause
---
PASS 1 usb-hcd-uhci-test /x86_64/uhci/pci/init
PASS 2 usb-hcd-uhci-test /x86_64/uhci/pci/port1
PASS 3 usb-hcd-uhci-test /x86_64/uhci/pci/hotplug
==7830==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 usb-hcd-uhci-test /x86_64/uhci/pci/hotplug/usb-storage
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/usb-hcd-ehci-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="usb-hcd-ehci-test" 
PASS 1 usb-hcd-ehci-test /x86_64/ehci/pci/uhci-port-1
---
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/usb-hcd-xhci-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="usb-hcd-xhci-test" 
PASS 1 usb-hcd-xhci-test /x86_64/xhci/pci/init
PASS 2 usb-hcd-xhci-test /x86_64/xhci/pci/hotplug
==7848==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 usb-hcd-xhci-test /x86_64/xhci/pci/hotplug/usb-uas
PASS 4 usb-hcd-xhci-test /x86_64/xhci/pci/hotplug/usb-ccid
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/cpu-plug-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="cpu-plug-test" 
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7984==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 1 vmgenid-test /x86_64/vmgenid/vmgenid/set-guid
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7990==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 2 vmgenid-test /x86_64/vmgenid/vmgenid/set-guid-auto
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==7996==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 vmgenid-test /x86_64/vmgenid/vmgenid/query-monitor
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/tpm-crb-swtpm-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="tpm-crb-swtpm-test" 
SKIP 1 tpm-crb-swtpm-test /x86_64/tpm/crb-swtpm/test # SKIP swtpm not in PATH or missing --tpm2 support
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8095==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8101==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 3 migration-test /x86_64/migration/fd_proto
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8108==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8114==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 4 migration-test /x86_64/migration/validate_uuid
PASS 5 migration-test /x86_64/migration/validate_uuid_error
PASS 6 migration-test /x86_64/migration/validate_uuid_src_not_set
---
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8164==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8170==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 8 migration-test /x86_64/migration/auto_converge
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8178==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8184==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 9 migration-test /x86_64/migration/postcopy/unix
PASS 10 migration-test /x86_64/migration/postcopy/recovery
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8213==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8219==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 11 migration-test /x86_64/migration/precopy/unix
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8227==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8233==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 12 migration-test /x86_64/migration/precopy/tcp
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8241==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8247==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 13 migration-test /x86_64/migration/xbzrle/unix
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8255==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8261==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 14 migration-test /x86_64/migration/multifd/tcp/none
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8379==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 15 migration-test /x86_64/migration/multifd/tcp/cancel
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8435==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8441==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 16 migration-test /x86_64/migration/multifd/tcp/zlib
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8497==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: -accel kvm: failed to initialize kvm: No such file or directory
qemu-system-x86_64: falling back to tcg
==8503==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 17 migration-test /x86_64/migration/multifd/tcp/zstd
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/test-x86-cpuid-compat -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="test-x86-cpuid-compat" 
PASS 1 test-x86-cpuid-compat /x86/cpuid/parsing-plus-minus
---
PASS 1 machine-none-test /x86_64/machine/none/cpu_option
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 QTEST_QEMU_IMG=qemu-img tests/qtest/qmp-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="qmp-test" 
PASS 1 qmp-test /x86_64/qmp/protocol
==8941==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 2 qmp-test /x86_64/qmp/oob
PASS 3 qmp-test /x86_64/qmp/preconfig
PASS 4 qmp-test /x86_64/qmp/missing-any-arg
---
PASS 16 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/i82562/pci-device/pci-device-tests/nop
PASS 17 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/i82801/pci-device/pci-device-tests/nop
PASS 18 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/ES1370/pci-device/pci-device-tests/nop
==9359==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 19 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/megasas/pci-device/pci-device-tests/nop
PASS 20 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/megasas/megasas-tests/dcmd/pd-get-info/fuzz
PASS 21 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/ne2k_pci/pci-device/pci-device-tests/nop
PASS 22 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/nvme/pci-device/pci-device-tests/nop
==9369==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 23 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/nvme/nvme-tests/oob-cmb-access
==9374==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 24 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/pcnet/pci-device/pci-device-tests/nop
PASS 25 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/pci-ohci/pci-device/pci-device-tests/nop
PASS 26 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/pci-ohci/pci-ohci-tests/ohci_pci-test-hotplug
---
PASS 33 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/sdhci-pci/sdhci/sdhci-tests/registers
PASS 34 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/tpci200/ipack/ipoctal232/ipoctal232-tests/nop
PASS 35 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/tpci200/pci-device/pci-device-tests/nop
==9434==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 36 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-9p-pci/pci-device/pci-device-tests/nop
PASS 37 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-9p-pci/virtio/virtio-tests/nop
PASS 38 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-9p-pci/virtio-9p/virtio-9p-tests/config
---
PASS 48 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-9p-pci/virtio-9p/virtio-9p-tests/fs/readdir/basic
PASS 49 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-balloon-pci/pci-device/pci-device-tests/nop
PASS 50 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-balloon-pci/virtio/virtio-tests/nop
==9445==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 51 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk-pci-tests/msix
==9451==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 52 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk-pci-tests/idx
==9457==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 53 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk-pci-tests/nxvirtq
==9463==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 54 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk-pci-tests/hotplug
==9469==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 55 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk/virtio-blk-tests/indirect
==9475==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 56 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk/virtio-blk-tests/config
==9481==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 57 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk/virtio-blk-tests/basic
==9487==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 58 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-blk-pci/virtio-blk/virtio-blk-tests/resize
PASS 59 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-net-pci/virtio-net/virtio-net-tests/basic
PASS 60 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-net-pci/virtio-net/virtio-net-tests/rx_stop_cont
---
PASS 68 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-rng-pci/virtio-rng-pci-tests/hotplug
PASS 69 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-rng-pci/pci-device/pci-device-tests/nop
PASS 70 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-rng-pci/virtio/virtio-tests/nop
==9579==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 71 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-scsi-pci/virtio-scsi-pci-tests/iothread-attach-node
==9590==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 72 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-scsi-pci/pci-device/pci-device-tests/nop
==9595==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 73 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-scsi-pci/virtio-scsi/virtio-scsi-tests/hotplug
==9600==WARNING: ASan doesn't fully support makecontext/swapcontext functions and may produce false positives in some cases!
PASS 74 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-scsi-pci/virtio-scsi/virtio-scsi-tests/unaligned-write-same
PASS 75 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-serial-pci/pci-device/pci-device-tests/nop
PASS 76 qos-test /x86_64/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-serial-pci/virtio/virtio-tests/nop
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--label', 'com.qemu.instance.uuid=2fd77e3ea5054a27a2f1a9046375de28', '-u', '1001', '--security-opt', 'seccomp=unconfined', '--rm', '-e', 'TARGET_LIST=x86_64-softmmu', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-tlr_304t/src/docker-src.2020-03-26-12.39.13.16830:/var/tmp/qemu:z,ro', 'qemu:fedora', '/var/tmp/qemu/run', 'test-debug']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=2fd77e3ea5054a27a2f1a9046375de28
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-tlr_304t/src'
make: *** [docker-run-test-debug@fedora] Error 2

real    38m46.723s
user    0m8.729s


The full log is available at
http://patchew.org/logs/20200326155628.859862-1-s.reiter@proxmox.com/testing.asan/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com

Re: [PATCH v2 1/3] backup: don't acquire aio_context in backup_clean

[Vladimir Sementsov-Ogievskiy]

26.03.2020 18:56, Stefan Reiter wrote:
> All code-paths leading to backup_clean (via job_clean) have the job's
> context already acquired. The job's context is guaranteed to be the same
> as the one used by backup_top via backup_job_create.

As we already discussed, this is not quite right. So, may be this patch should
be the last one...

> 
> Since the previous logic effectively acquired the lock twice, this
> broke cleanup of backups for disks using IO threads, since the BDRV_POLL_WHILE
> in bdrv_backup_top_drop -> bdrv_do_drained_begin would only release the lock
> once, thus deadlocking with the IO thread.
> 
> This is a partial revert of 0abf2581717a19.
> 
> Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
> ---
>   block/backup.c | 4 ----
>   1 file changed, 4 deletions(-)
> 
> diff --git a/block/backup.c b/block/backup.c
> index 7430ca5883..a7a7dcaf4c 100644
> --- a/block/backup.c
> +++ b/block/backup.c
> @@ -126,11 +126,7 @@ static void backup_abort(Job *job)
>   static void backup_clean(Job *job)
>   {
>       BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
> -    AioContext *aio_context = bdrv_get_aio_context(s->backup_top);
> -
> -    aio_context_acquire(aio_context);
>       bdrv_backup_top_drop(s->backup_top);
> -    aio_context_release(aio_context);
>   }
>   
>   void backup_do_checkpoint(BlockJob *job, Error **errp)
> 


-- 
Best regards,
Vladimir

Re: [PATCH v2 0/3] Fix some AIO context locking in jobs

[Dietmar Maurer]

> I *think* the second patch also fixes the hangs on backup abort that I and
> Dietmar noticed in v1, but I'm not sure, they we're somewhat intermittent
> before too.

No, I still get this freeze:

0  0x00007f0aa4866916 in __GI_ppoll (fds=0x7f0a12935c40, nfds=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x000055d3a6c91d29 in ppoll (__ss=0x0, __timeout=0x0, __nfds=<optimized out>, __fds=<optimized out>)
    at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x000055d3a6c91d29 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=-1) at util/qemu-timer.c:335
#3  0x000055d3a6c94511 in fdmon_poll_wait (ctx=0x7f0a97505e80, ready_list=0x7fff67e5c358, timeout=-1) at util/fdmon-poll.c:79
#4  0x000055d3a6c93af7 in aio_poll (ctx=0x7f0a97505e80, blocking=blocking@entry=true) at util/aio-posix.c:589
#5  0x000055d3a6bf4cd3 in bdrv_do_drained_begin
    (poll=<optimized out>, ignore_bds_parents=false, parent=0x0, recursive=false, bs=0x7f0a9754c280) at block/io.c:429
#6  0x000055d3a6bf4cd3 in bdrv_do_drained_begin
    (bs=0x7f0a9754c280, recursive=<optimized out>, parent=0x0, ignore_bds_parents=<optimized out>, poll=<optimized out>) at block/io.c:395
#7  0x000055d3a6be5c87 in blk_drain (blk=0x7f0a97abcc00) at block/block-backend.c:1617
#8  0x000055d3a6be686d in blk_unref (blk=0x7f0a97abcc00) at block/block-backend.c:473
#9  0x000055d3a6b9e835 in block_job_free (job=0x7f0a15f44e00) at blockjob.c:89
#10 0x000055d3a6b9fe29 in job_unref (job=0x7f0a15f44e00) at job.c:376
#11 0x000055d3a6b9fe29 in job_unref (job=0x7f0a15f44e00) at job.c:368
#12 0x000055d3a6ba07aa in job_finish_sync (job=job@entry=0x7f0a15f44e00, finish=finish@entry=
    0x55d3a6ba0cd0 <job_cancel_err>, errp=errp@entry=0x0) at job.c:1004
#13 0x000055d3a6ba0cee in job_cancel_sync (job=job@entry=0x7f0a15f44e00) at job.c:947

Re: [PATCH v2 0/3] Fix some AIO context locking in jobs

[Dietmar Maurer]

But I need to mention that it takes some time to reproduce this. This time I
run/aborted about 500 backup jobs until it triggers.

> > I *think* the second patch also fixes the hangs on backup abort that I and
> > Dietmar noticed in v1, but I'm not sure, they we're somewhat intermittent
> > before too.
> 
> No, I still get this freeze:
> 
> 0  0x00007f0aa4866916 in __GI_ppoll (fds=0x7f0a12935c40, nfds=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0)
>     at ../sysdeps/unix/sysv/linux/ppoll.c:39
> #1  0x000055d3a6c91d29 in ppoll (__ss=0x0, __timeout=0x0, __nfds=<optimized out>, __fds=<optimized out>)
>     at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
> #2  0x000055d3a6c91d29 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=-1) at util/qemu-timer.c:335
> #3  0x000055d3a6c94511 in fdmon_poll_wait (ctx=0x7f0a97505e80, ready_list=0x7fff67e5c358, timeout=-1) at util/fdmon-poll.c:79
> #4  0x000055d3a6c93af7 in aio_poll (ctx=0x7f0a97505e80, blocking=blocking@entry=true) at util/aio-posix.c:589
> #5  0x000055d3a6bf4cd3 in bdrv_do_drained_begin
>     (poll=<optimized out>, ignore_bds_parents=false, parent=0x0, recursive=false, bs=0x7f0a9754c280) at block/io.c:429
> #6  0x000055d3a6bf4cd3 in bdrv_do_drained_begin
>     (bs=0x7f0a9754c280, recursive=<optimized out>, parent=0x0, ignore_bds_parents=<optimized out>, poll=<optimized out>) at block/io.c:395
> #7  0x000055d3a6be5c87 in blk_drain (blk=0x7f0a97abcc00) at block/block-backend.c:1617
> #8  0x000055d3a6be686d in blk_unref (blk=0x7f0a97abcc00) at block/block-backend.c:473
> #9  0x000055d3a6b9e835 in block_job_free (job=0x7f0a15f44e00) at blockjob.c:89
> #10 0x000055d3a6b9fe29 in job_unref (job=0x7f0a15f44e00) at job.c:376
> #11 0x000055d3a6b9fe29 in job_unref (job=0x7f0a15f44e00) at job.c:368
> #12 0x000055d3a6ba07aa in job_finish_sync (job=job@entry=0x7f0a15f44e00, finish=finish@entry=
>     0x55d3a6ba0cd0 <job_cancel_err>, errp=errp@entry=0x0) at job.c:1004
> #13 0x000055d3a6ba0cee in job_cancel_sync (job=job@entry=0x7f0a15f44e00) at job.c:947

Re: [PATCH v2 0/3] Fix some AIO context locking in jobs

[Dietmar Maurer]

Wait - maybe this was a bug in my test setup - I am unable to reproduce now..

@Stefan Reiter: Are you able to trigger this?

> > I *think* the second patch also fixes the hangs on backup abort that I and
> > Dietmar noticed in v1, but I'm not sure, they we're somewhat intermittent
> > before too.
> 
> No, I still get this freeze:
> 
> 0  0x00007f0aa4866916 in __GI_ppoll (fds=0x7f0a12935c40, nfds=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0)
>     at ../sysdeps/unix/sysv/linux/ppoll.c:39
> #1  0x000055d3a6c91d29 in ppoll (__ss=0x0, __timeout=0x0, __nfds=<optimized out>, __fds=<optimized out>)
>     at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
> #2  0x000055d3a6c91d29 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=-1) at util/qemu-timer.c:335
> #3  0x000055d3a6c94511 in fdmon_poll_wait (ctx=0x7f0a97505e80, ready_list=0x7fff67e5c358, timeout=-1) at util/fdmon-poll.c:79
> #4  0x000055d3a6c93af7 in aio_poll (ctx=0x7f0a97505e80, blocking=blocking@entry=true) at util/aio-posix.c:589
> #5  0x000055d3a6bf4cd3 in bdrv_do_drained_begin
>     (poll=<optimized out>, ignore_bds_parents=false, parent=0x0, recursive=false, bs=0x7f0a9754c280) at block/io.c:429
> #6  0x000055d3a6bf4cd3 in bdrv_do_drained_begin
>     (bs=0x7f0a9754c280, recursive=<optimized out>, parent=0x0, ignore_bds_parents=<optimized out>, poll=<optimized out>) at block/io.c:395
> #7  0x000055d3a6be5c87 in blk_drain (blk=0x7f0a97abcc00) at block/block-backend.c:1617
> #8  0x000055d3a6be686d in blk_unref (blk=0x7f0a97abcc00) at block/block-backend.c:473
> #9  0x000055d3a6b9e835 in block_job_free (job=0x7f0a15f44e00) at blockjob.c:89
> #10 0x000055d3a6b9fe29 in job_unref (job=0x7f0a15f44e00) at job.c:376
> #11 0x000055d3a6b9fe29 in job_unref (job=0x7f0a15f44e00) at job.c:368
> #12 0x000055d3a6ba07aa in job_finish_sync (job=job@entry=0x7f0a15f44e00, finish=finish@entry=
>     0x55d3a6ba0cd0 <job_cancel_err>, errp=errp@entry=0x0) at job.c:1004
> #13 0x000055d3a6ba0cee in job_cancel_sync (job=job@entry=0x7f0a15f44e00) at job.c:947

Re: [PATCH v2 0/3] Fix some AIO context locking in jobs

[Dietmar Maurer]

> I *think* the second patch also fixes the hangs on backup abort that I and
> Dietmar noticed in v1, but I'm not sure, they we're somewhat intermittent
> before too.

After more test, I am 100% sure the bug (or another one) is still there. 
Here is how to trigger:

1. use latest qemu sources from githup
2. apply those 3 patches from Stefan
2. create a VM with virtio-scsis-single drive using io-thread
3. inside VM install Debian buster
4. inside VM, run "stress -d 5"

Then run a series of backups, aborting them after a few seconds:

# start loop 

qmp: { "execute": "drive-backup", "arguments": { "device": "drive-scsi0", "sync": "full", "target": "backup-scsi0.raw" } }

sleep 3 second

qmp: { "execute": "'block-job-cancel", "arguments": { "device": "drive-scsi0" } }

# end loop

After several iterations (mostly < 50) the VM freezes (this time somewhere 
inside drive_backup_prepare):


(gdb) bt
#0  0x00007f61ea09e916 in __GI_ppoll (fds=0x7f6158130c40, nfds=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x000055f708401c79 in ppoll (__ss=0x0, __timeout=0x0, __nfds=<optimized out>, __fds=<optimized out>)
    at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x000055f708401c79 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=-1) at util/qemu-timer.c:335
#3  0x000055f708404461 in fdmon_poll_wait (ctx=0x7f61dcd05e80, ready_list=0x7ffc4e7fbde8, timeout=-1) at util/fdmon-poll.c:79
#4  0x000055f708403a47 in aio_poll (ctx=0x7f61dcd05e80, blocking=blocking@entry=true) at util/aio-posix.c:589
#5  0x000055f708364c03 in bdrv_do_drained_begin (poll=<optimized out>, ignore_bds_parents=false, parent=0x0, recursive=false, bs=0x7f61dcd4c500)
    at block/io.c:429
#6  0x000055f708364c03 in bdrv_do_drained_begin
    (bs=0x7f61dcd4c500, recursive=<optimized out>, parent=0x0, ignore_bds_parents=<optimized out>, poll=<optimized out>) at block/io.c:395
#7  0x000055f7081016f9 in drive_backup_prepare (common=0x7f61d9a0c280, errp=0x7ffc4e7fbf28) at blockdev.c:1755
#8  0x000055f708103e6a in qmp_transaction (dev_list=dev_list@entry=0x7ffc4e7fbfa0, has_props=has_props@entry=false, props=0x7f61d9a304e8, 
    props@entry=0x0, errp=errp@entry=0x7ffc4e7fbfd8) at blockdev.c:2401
#9  0x000055f708105322 in blockdev_do_action (errp=0x7ffc4e7fbfd8, action=0x7ffc4e7fbf90) at blockdev.c:1054
#10 0x000055f708105322 in qmp_drive_backup (backup=backup@entry=0x7ffc4e7fbfe0, errp=errp@entry=0x7ffc4e7fbfd8) at blockdev.c:3129
#11 0x000055f7082c0101 in qmp_marshal_drive_backup (args=<optimized out>, ret=<optimized out>, errp=0x7ffc4e7fc0b8)
    at qapi/qapi-commands-block-core.c:555
#12 0x000055f7083b7338 in qmp_dispatch (cmds=0x55f708904000 <qmp_commands>, request=<optimized out>, allow_oob=<optimized out>)
    at qapi/qmp-dispatch.c:155
#13 0x000055f7082a1bd1 in monitor_qmp_dispatch (mon=0x7f61dcd15d80, req=<optimized out>) at monitor/qmp.c:145
#14 0x000055f7082a23ba in monitor_qmp_bh_dispatcher (data=<optimized out>) at monitor/qmp.c:234
#15 0x000055f708400205 in aio_bh_call (bh=0x7f61dd28f960) at util/async.c:164
#16 0x000055f708400205 in aio_bh_poll (ctx=ctx@entry=0x7f61dd33ef80) at util/async.c:164
#17 0x000055f70840388e in aio_dispatch (ctx=0x7f61dd33ef80) at util/aio-posix.c:380
#18 0x000055f7084000ee in aio_ctx_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at util/async.c:298
#19 0x00007f61ec069f2e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x000055f708402af8 in glib_pollfds_poll () at util/main-loop.c:219
#21 0x000055f708402af8 in os_host_main_loop_wait (timeout=<optimized out>) at util/main-loop.c:242
#22 0x000055f708402af8 in main_loop_wait (nonblocking=nonblocking@entry=0) at util/main-loop.c:518
#23 0x000055f70809e589 in qemu_main_loop () at /home/dietmar/pve5-devel/mirror_qemu/softmmu/vl.c:1665
#24 0x000055f707fa2c3e in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>)
    at /home/dietmar/pve5-devel/mirror_qemu/softmmu/main.c:49