All of lore.kernel.org
 help / color / mirror / Atom feed
* [Bug 216151] New: kernel panic after BUG: KASAN: use-after-free in _copy_to_iter+0x830/0x1030
@ 2022-06-20  5:52 bugzilla-daemon
  2022-06-20  6:07 ` [Bug 216151] " bugzilla-daemon
                   ` (4 more replies)
  0 siblings, 5 replies; 7+ messages in thread
From: bugzilla-daemon @ 2022-06-20  5:52 UTC (permalink / raw)
  To: linux-xfs

https://bugzilla.kernel.org/show_bug.cgi?id=216151

            Bug ID: 216151
           Summary: kernel panic after BUG: KASAN: use-after-free in
                    _copy_to_iter+0x830/0x1030
           Product: File System
           Version: 2.5
    Kernel Version: v5.19-rc2+
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: XFS
          Assignee: filesystem_xfs@kernel-bugs.kernel.org
          Reporter: zlang@redhat.com
        Regression: No

xfstests generic/465 hit below kernel panic and KASAN BUG on NFS through
XFS(default mkfs options). Hit on linux v5.19-rc2+, which HEAD is:

commit 05c6ca8512f2722f57743d653bb68cf2a273a55a
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun Jun 19 09:58:28 2022 -0500

    Merge tag 'x86-urgent-2022-06-19' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip


# cat local.config
FSTYP=nfs
TEST_DEV=$mynfs_server:/mnt/xfstests/test/nfs-server
TEST_DIR=/mnt/xfstests/test/nfs-client
SCRATCH_DEV=$mynfs_server:/mnt/xfstests/scratch/nfs-server
SCRATCH_MNT=/mnt/xfstests/scratch/nfs-client
MOUNT_OPTIONS="-o vers=4.2"
TEST_FS_MOUNT_OPTS="-o vers=4.2"

XFS info:
meta-data=/dev/vda4              isize=512    agcount=4, agsize=983040 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=1 inobtcount=1
data     =                       bsize=4096   blocks=3932160, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=16384, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

console log:
[26844.323108] run fstests generic/465 at 2022-06-20 00:24:32 
[26847.872804]
================================================================== 
[26847.872854] BUG: KASAN: use-after-free in _copy_to_iter+0x694/0xd0c 
[26847.872992] Write of size 16 at addr ffff2fb1d4013000 by task nfsd/45920 
[26847.872999]  
[26847.873083] CPU: 0 PID: 45920 Comm: nfsd Kdump: loaded Not tainted
5.19.0-rc2+ #1 
[26847.873090] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 
[26847.873094] Call trace: 
[26847.873174]  dump_backtrace+0x1e0/0x26c 
[26847.873198]  show_stack+0x1c/0x70 
[26847.873203]  dump_stack_lvl+0x98/0xd0 
[26847.873262]  print_address_description.constprop.0+0x74/0x420 
[26847.873285]  print_report+0xc8/0x234 
[26847.873290]  kasan_report+0xb0/0xf0 
[26847.873294]  kasan_check_range+0xf4/0x1a0 
[26847.873298]  memcpy+0xdc/0x100 
[26847.873303]  _copy_to_iter+0x694/0xd0c 
[26847.873307]  copy_page_to_iter+0x3f0/0xb30 
[26847.873311]  filemap_read+0x3e8/0x7e0 
[26847.873319]  generic_file_read_iter+0x2b0/0x404 
[26847.873324]  xfs_file_buffered_read+0x18c/0x4e0 [xfs] 
[26847.873854]  xfs_file_read_iter+0x260/0x514 [xfs] 
[26847.874168]  do_iter_readv_writev+0x338/0x4b0 
[26847.874176]  do_iter_read+0x120/0x374 
[26847.874180]  vfs_iter_read+0x5c/0xa0 
[26847.874185]  nfsd_readv+0x1a0/0x9ac [nfsd] 
[26847.874308]  nfsd4_encode_read_plus_data+0x2f0/0x690 [nfsd] 
[26847.874387]  nfsd4_encode_read_plus+0x344/0x924 [nfsd] 
[26847.874468]  nfsd4_encode_operation+0x1fc/0x800 [nfsd] 
[26847.874544]  nfsd4_proc_compound+0x9c4/0x2364 [nfsd] 
[26847.874620]  nfsd_dispatch+0x3a4/0x67c [nfsd] 
[26847.874697]  svc_process_common+0xd54/0x1be0 [sunrpc] 
[26847.874921]  svc_process+0x298/0x484 [sunrpc] 
[26847.875063]  nfsd+0x2b0/0x580 [nfsd] 
[26847.875143]  kthread+0x230/0x294 
[26847.875170]  ret_from_fork+0x10/0x20 
[26847.875178]  
[26847.875180] Allocated by task 602477: 
[26847.875185]  kasan_save_stack+0x28/0x50 
[26847.875191]  __kasan_slab_alloc+0x68/0x90 
[26847.875195]  kmem_cache_alloc+0x180/0x394 
[26847.875199]  security_inode_alloc+0x30/0x120 
[26847.875221]  inode_init_always+0x49c/0xb1c 
[26847.875228]  alloc_inode+0x70/0x1c0 
[26847.875232]  new_inode+0x20/0x230 
[26847.875236]  debugfs_create_dir+0x74/0x48c 
[26847.875243]  rpc_clnt_debugfs_register+0xd0/0x174 [sunrpc] 
[26847.875384]  rpc_client_register+0x90/0x4c4 [sunrpc] 
[26847.875526]  rpc_new_client+0x6e0/0x1260 [sunrpc] 
[26847.875666]  __rpc_clone_client+0x158/0x7d4 [sunrpc] 
[26847.875831]  rpc_clone_client+0x168/0x1dc [sunrpc] 
[26847.875972]  nfs4_proc_lookup_mountpoint+0x180/0x1f0 [nfsv4] 
[26847.876149]  nfs4_submount+0xcc/0x6cc [nfsv4] 
[26847.876251]  nfs_d_automount+0x4b4/0x7bc [nfs] 
[26847.876389]  __traverse_mounts+0x180/0x4a0 
[26847.876396]  step_into+0x510/0x940 
[26847.876400]  walk_component+0xf0/0x510 
[26847.876405]  link_path_walk.part.0.constprop.0+0x4c0/0xa3c 
[26847.876410]  path_lookupat+0x6c/0x57c 
[26847.876436]  filename_lookup+0x13c/0x400 
[26847.876440]  vfs_path_lookup+0xa0/0xec 
[26847.876445]  mount_subtree+0x1c4/0x380 
[26847.876451]  do_nfs4_mount+0x3c0/0x770 [nfsv4] 
[26847.876554]  nfs4_try_get_tree+0xc0/0x24c [nfsv4] 
[26847.876653]  nfs_get_tree+0xc0/0x110 [nfs] 
[26847.876742]  vfs_get_tree+0x78/0x2a0 
[26847.876748]  do_new_mount+0x228/0x4fc 
[26847.876753]  path_mount+0x268/0x16d4 
[26847.876757]  __arm64_sys_mount+0x1dc/0x240 
[26847.876762]  invoke_syscall.constprop.0+0xd8/0x1d0 
[26847.876769]  el0_svc_common.constprop.0+0x224/0x2bc 
[26847.876774]  do_el0_svc+0x4c/0x90 
[26847.876778]  el0_svc+0x5c/0x140 
[26847.876785]  el0t_64_sync_handler+0xb4/0x130 
[26847.876789]  el0t_64_sync+0x174/0x178 
[26847.876793]  
[26847.876794] Last potentially related work creation: 
[26847.876797]  kasan_save_stack+0x28/0x50 
[26847.876802]  __kasan_record_aux_stack+0x9c/0xc0 
[26847.876806]  kasan_record_aux_stack_noalloc+0x10/0x20 
[26847.876811]  call_rcu+0xf8/0x6c0 
[26847.876818]  security_inode_free+0x94/0xc0 
[26847.876823]  __destroy_inode+0xb0/0x420 
[26847.876828]  destroy_inode+0x80/0x170 
[26847.876832]  evict+0x334/0x4c0 
[26847.876836]  iput_final+0x138/0x364 
[26847.876841]  iput.part.0+0x330/0x47c 
[26847.876845]  iput+0x44/0x60 
[26847.876849]  dentry_unlink_inode+0x200/0x43c 
[26847.876853]  __dentry_kill+0x29c/0x56c 
[26847.876857]  dput+0x41c/0x870 
[26847.876860]  simple_recursive_removal+0x4ac/0x630 
[26847.876865]  debugfs_remove+0x5c/0x80 
[26847.876870]  rpc_clnt_debugfs_unregister+0x3c/0x7c [sunrpc] 
[26847.877011]  rpc_free_client_work+0xdc/0x480 [sunrpc] 
[26847.877154]  process_one_work+0x794/0x184c 
[26847.877161]  worker_thread+0x3d4/0xc40 
[26847.877165]  kthread+0x230/0x294 
[26847.877168]  ret_from_fork+0x10/0x20 
[26847.877172]  
[26847.877174] Second to last potentially related work creation: 
[26847.877177]  kasan_save_stack+0x28/0x50 
[26847.877181]  __kasan_record_aux_stack+0x9c/0xc0 
[26847.877185]  kasan_record_aux_stack_noalloc+0x10/0x20 
[26847.877190]  call_rcu+0xf8/0x6c0 
[26847.877195]  security_inode_free+0x94/0xc0 
[26847.877200]  __destroy_inode+0xb0/0x420 
[26847.877205]  destroy_inode+0x80/0x170 
[26847.877209]  evict+0x334/0x4c0 
[26847.877213]  iput_final+0x138/0x364 
[26847.877217]  iput.part.0+0x330/0x47c 
[26847.877221]  iput+0x44/0x60 
[26847.877226]  dentry_unlink_inode+0x200/0x43c 
[26847.877229]  __dentry_kill+0x29c/0x56c 
[26847.877233]  dput+0x44c/0x870 
[26847.877237]  __fput+0x244/0x730 
[26847.877241]  ____fput+0x14/0x20 
[26847.877245]  task_work_run+0xd0/0x240 
[26847.877250]  do_exit+0x3a0/0xaac 
[26847.877256]  do_group_exit+0xac/0x244 
[26847.877260]  __arm64_sys_exit_group+0x40/0x4c 
[26847.877264]  invoke_syscall.constprop.0+0xd8/0x1d0 
[26847.877270]  el0_svc_common.constprop.0+0x224/0x2bc 
[26847.877275]  do_el0_svc+0x4c/0x90 
[26847.877280]  el0_svc+0x5c/0x140 
[26847.877284]  el0t_64_sync_handler+0xb4/0x130 
[26847.877288]  el0t_64_sync+0x174/0x178 
[26847.877292]  
[26847.877293] The buggy address belongs to the object at ffff2fb1d4013000 
[26847.877293]  which belongs to the cache lsm_inode_cache of size 128 
[26847.877298] The buggy address is located 0 bytes inside of 
[26847.877298]  128-byte region [ffff2fb1d4013000, ffff2fb1d4013080) 
[26847.877302]  
[26847.877304] The buggy address belongs to the physical page: 
[26847.877308] page:000000007bc4a504 refcount:1 mapcount:0
mapping:0000000000000000 index:0xffff2fb1d4013000 pfn:0x154013 
[26847.877363] flags: 0x17ffff800000200(slab|node=0|zone=2|lastcpupid=0xfffff) 
[26847.877375] raw: 017ffff800000200 fffffcbec6646688 fffffcbec750d708
ffff2fb1808dfe00 
[26847.877379] raw: ffff2fb1d4013000 0000000000150010 00000001ffffffff
0000000000000000 
[26847.877382] page dumped because: kasan: bad access detected 
[26847.877384]  
[26847.877385] Memory state around the buggy address: 
[26847.877389]  ffff2fb1d4012f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 
[26847.877392]  ffff2fb1d4012f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 
[26847.877395] >ffff2fb1d4013000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb 
[26847.877397]                    ^ 
[26847.877400]  ffff2fb1d4013080: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb
fb 
[26847.877402]  ffff2fb1d4013100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
fc 
[26847.877405]
================================================================== 
[26847.877570] Disabling lock debugging due to kernel taint 
[26848.391268] Unable to handle kernel write to read-only memory at virtual
address ffff2fb197f76000 
[26848.393628] KASAN: maybe wild-memory-access in range
[0xfffd7d8cbfbb0000-0xfffd7d8cbfbb0007] 
[26848.395572] Mem abort info: 
[26848.396408]   ESR = 0x000000009600004f 
[26848.397314]   EC = 0x25: DABT (current EL), IL = 32 bits 
[26848.398520]   SET = 0, FnV = 0 
[26848.506889]   EA = 0, S1PTW = 0 
[26848.507633]   FSC = 0x0f: level 3 permission fault 
[26848.508802] Data abort info: 
[26848.509480]   ISV = 0, ISS = 0x0000004f 
[26848.510347]   CM = 0, WnR = 1 
[26848.511032] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000b22dd000 
[26848.512543] [ffff2fb197f76000] pgd=18000001bfff8003, p4d=18000001bfff8003,
pud=18000001bfa08003, pmd=18000001bf948003, pte=0060000117f76f87 
[26848.515600] Internal error: Oops: 9600004f [#1] SMP 
[26848.516870] Modules linked in: loop dm_mod tls rpcsec_gss_krb5 nfsv4
dns_resolver nfs fscache netfs rpcrdma rdma_cm iw_cm ib_cm ib_core nfsd
auth_rpcgss nfs_acl lockd grace rfkill sunrpc vfat fat drm fuse xfs libcrc32c
crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_blk virtio_net
virtio_console net_failover failover virtio_mmio ipmi_devintf ipmi_msghandler 
[26848.525472] CPU: 1 PID: 45919 Comm: nfsd Kdump: loaded Tainted: G    B      
      5.19.0-rc2+ #1 
[26848.527934] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 
[26848.529819] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) 
[26848.531625] pc : __memcpy+0x2c/0x230 
[26848.532583] lr : memcpy+0xa8/0x100 
[26848.533497] sp : ffff80000bbb6f00 
[26848.534444] x29: ffff80000bbb6f00 x28: 0000000000000000 x27:
ffff2fb18a4bd5b8 
[26848.536435] x26: 0000000000000000 x25: ffff80000bbb7740 x24:
ffff2fb18a4bd5b0 
[26848.538283] x23: ffff2fb1ee80bff0 x22: ffffa83e4692e000 x21:
ffffa83e434ae3e8 
[26848.540181] x20: ffff2fb197f76000 x19: 0000000000000010 x18:
ffff2fb1d3c34530 
[26848.542071] x17: 0000000000000000 x16: ffffa83e42d01a30 x15:
6161616161616161 
[26848.543840] x14: 6161616161616161 x13: 6161616161616161 x12:
6161616161616161 
[26848.545614] x11: 1fffe5f632feec01 x10: ffff65f632feec01 x9 :
dfff800000000000 
[26848.547387] x8 : ffff2fb197f7600f x7 : 6161616161616161 x6 :
6161616161616161 
[26848.549156] x5 : ffff2fb197f76010 x4 : ffff2fb1ee80c000 x3 :
ffffa83e434ae3e8 
[26848.550924] x2 : 0000000000000010 x1 : ffff2fb1ee80bff0 x0 :
ffff2fb197f76000 
[26848.552694] Call trace: 
[26848.553314]  __memcpy+0x2c/0x230 
[26848.554123]  _copy_to_iter+0x694/0xd0c 
[26848.555084]  copy_page_to_iter+0x3f0/0xb30 
[26848.556104]  filemap_read+0x3e8/0x7e0 
[26848.557020]  generic_file_read_iter+0x2b0/0x404 
[26848.558152]  xfs_file_buffered_read+0x18c/0x4e0 [xfs] 
[26848.559795]  xfs_file_read_iter+0x260/0x514 [xfs] 
[26848.561265]  do_iter_readv_writev+0x338/0x4b0 
[26848.562346]  do_iter_read+0x120/0x374 
[26848.563263]  vfs_iter_read+0x5c/0xa0 
[26848.564162]  nfsd_readv+0x1a0/0x9ac [nfsd] 
[26848.565415]  nfsd4_encode_read_plus_data+0x2f0/0x690 [nfsd] 
[26848.566869]  nfsd4_encode_read_plus+0x344/0x924 [nfsd] 
[26848.568231]  nfsd4_encode_operation+0x1fc/0x800 [nfsd] 
[26848.569596]  nfsd4_proc_compound+0x9c4/0x2364 [nfsd] 
[26848.570908]  nfsd_dispatch+0x3a4/0x67c [nfsd] 
[26848.572067]  svc_process_common+0xd54/0x1be0 [sunrpc] 
[26848.573508]  svc_process+0x298/0x484 [sunrpc] 
[26848.574743]  nfsd+0x2b0/0x580 [nfsd] 
[26848.575718]  kthread+0x230/0x294 
[26848.576528]  ret_from_fork+0x10/0x20 
[26848.577421] Code: f100405f 540000c3 a9401c26 a97f348c (a9001c06)  
[26848.578934] SMP: stopping secondary CPUs 
[26848.582664] Starting crashdump kernel... 
[26848.583602] Bye!

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.

^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2022-07-04 16:21 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-20  5:52 [Bug 216151] New: kernel panic after BUG: KASAN: use-after-free in _copy_to_iter+0x830/0x1030 bugzilla-daemon
2022-06-20  6:07 ` [Bug 216151] " bugzilla-daemon
2022-06-20  6:10 ` bugzilla-daemon
2022-06-23 23:34   ` Dave Chinner
2022-06-23 23:34 ` bugzilla-daemon
2022-06-26 21:04 ` bugzilla-daemon
2022-07-04 16:21 ` bugzilla-daemon

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.