* [syzbot] [xfs?] BUG: sleeping function called from invalid context in vm_map_ram
@ 2023-03-21 17:03 syzbot
2023-03-22 5:41 ` Lorenzo Stoakes
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2023-03-21 17:03 UTC (permalink / raw)
To: akpm, djwong, linux-fsdevel, linux-kernel, linux-xfs, lstoakes,
syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 73f2c2a7e1d2 Add linux-next specific files for 20230320
git tree: linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=11ad6e1cc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=f22105589e896af1
dashboard link: https://syzkaller.appspot.com/bug?extid=6d9043ea38ed2b9ef000
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17d199bac80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=159c7281c80000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2e4e105e18cf/disk-73f2c2a7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/08d761112297/vmlinux-73f2c2a7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4b39e3e871ce/bzImage-73f2c2a7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/662e0db5efdd/mount_0.gz
The issue was bisected to:
commit 8f4977bdd77ee3dce8af81488231e7535695f889
Author: Lorenzo Stoakes <lstoakes@gmail.com>
Date: Sun Mar 19 07:09:31 2023 +0000
mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16c9956ec80000
final oops: https://syzkaller.appspot.com/x/report.txt?x=15c9956ec80000
console output: https://syzkaller.appspot.com/x/log.txt?x=11c9956ec80000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6d9043ea38ed2b9ef000@syzkaller.appspotmail.com
Fixes: 8f4977bdd77e ("mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock")
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 41, name: kworker/u4:2
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
3 locks held by kworker/u4:2/41:
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1: ffffc90000b27db0 ((work_completion)(&pwork->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
#2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vb_alloc mm/vmalloc.c:2090 [inline]
#2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vm_map_ram+0x7a/0xcf0 mm/vmalloc.c:2290
CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 6.3.0-rc3-next-20230320-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: xfs_iwalk-5100 xfs_pwork_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106
__might_resched+0x358/0x580 kernel/sched/core.c:10059
__mutex_lock_common kernel/locking/mutex.c:580 [inline]
__mutex_lock+0x9f/0x1350 kernel/locking/mutex.c:747
vb_alloc mm/vmalloc.c:2105 [inline]
vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290
_xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441
xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719
xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811
xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889
xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline]
xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926
xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114
xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455
xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624
xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x33e/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
=============================
[ BUG: Invalid wait context ]
6.3.0-rc3-next-20230320-syzkaller #0 Tainted: G W
-----------------------------
kworker/u4:2/41 is trying to lock:
ffff88801d967468 (&vb->lock){+.+.}-{3:3}, at: vb_alloc mm/vmalloc.c:2105 [inline]
ffff88801d967468 (&vb->lock){+.+.}-{3:3}, at: vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290
other info that might help us debug this:
context-{4:4}
3 locks held by kworker/u4:2/41:
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1: ffffc90000b27db0 ((work_completion)(&pwork->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
#2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vb_alloc mm/vmalloc.c:2090 [inline]
#2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vm_map_ram+0x7a/0xcf0 mm/vmalloc.c:2290
stack backtrace:
CPU: 0 PID: 41 Comm: kworker/u4:2 Tainted: G W 6.3.0-rc3-next-20230320-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: xfs_iwalk-5100 xfs_pwork_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
print_lock_invalid_wait_context kernel/locking/lockdep.c:4724 [inline]
check_wait_context kernel/locking/lockdep.c:4785 [inline]
__lock_acquire+0x159e/0x5df0 kernel/locking/lockdep.c:5024
lock_acquire.part.0+0x11c/0x370 kernel/locking/lockdep.c:5691
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747
vb_alloc mm/vmalloc.c:2105 [inline]
vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290
_xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441
xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719
xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811
xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889
xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline]
xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926
xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114
xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455
xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624
xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x33e/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 41, name: kworker/u4:2
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 PID: 41 Comm: kworker/u4:2 Tainted: G W 6.3.0-rc3-next-20230320-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: xfs_iwalk-5163 xfs_pwork_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106
__might_resched+0x358/0x580 kernel/sched/core.c:10059
__mutex_lock_common kernel/locking/mutex.c:580 [inline]
__mutex_lock+0x9f/0x1350 kernel/locking/mutex.c:747
vb_alloc mm/vmalloc.c:2105 [inline]
vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290
_xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441
xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719
xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811
xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889
xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline]
xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926
xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114
xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455
xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624
xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x33e/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 41, name: kworker/u4:2
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 PID: 41 Comm: kworker/u4:2 Tainted: G W 6.3.0-rc3-next-20230320-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: xfs_iwalk-5298 xfs_pwork_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106
__might_resched+0x358/0x580 kernel/sched/core.c:10059
__mutex_lock_common kernel/locking/mutex.c:580 [inline]
__mutex_lock+0x9f/0x1350 kernel/locking/mutex.c:747
vb_alloc mm/vmalloc.c:2105 [inline]
vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290
_xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441
xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719
xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811
xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889
xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline]
xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926
xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114
xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455
xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624
xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x33e/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [syzbot] [xfs?] BUG: sleeping function called from invalid context in vm_map_ram
2023-03-21 17:03 [syzbot] [xfs?] BUG: sleeping function called from invalid context in vm_map_ram syzbot
@ 2023-03-22 5:41 ` Lorenzo Stoakes
0 siblings, 0 replies; 2+ messages in thread
From: Lorenzo Stoakes @ 2023-03-22 5:41 UTC (permalink / raw)
To: syzbot
Cc: akpm, djwong, linux-fsdevel, linux-kernel, linux-xfs, syzkaller-bugs
On Tue, 21 Mar 2023 at 17:03, syzbot
<syzbot+6d9043ea38ed2b9ef000@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 73f2c2a7e1d2 Add linux-next specific files for 20230320
> git tree: linux-next
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=11ad6e1cc80000
> kernel config: https://syzkaller.appspot.com/x/.config?x=f22105589e896af1
> dashboard link: https://syzkaller.appspot.com/bug?extid=6d9043ea38ed2b9ef000
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17d199bac80000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=159c7281c80000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/2e4e105e18cf/disk-73f2c2a7.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/08d761112297/vmlinux-73f2c2a7.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/4b39e3e871ce/bzImage-73f2c2a7.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/662e0db5efdd/mount_0.gz
>
> The issue was bisected to:
>
> commit 8f4977bdd77ee3dce8af81488231e7535695f889
> Author: Lorenzo Stoakes <lstoakes@gmail.com>
> Date: Sun Mar 19 07:09:31 2023 +0000
>
> mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock
This patch has already been dropped in mm-unstable which will
eventually reach linux-next. The current revision of this patch set
retains the spinlocks.
[snip]
--
Lorenzo Stoakes
https://ljs.io
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2023-03-22 5:41 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
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2023-03-21 17:03 [syzbot] [xfs?] BUG: sleeping function called from invalid context in vm_map_ram syzbot
2023-03-22 5:41 ` Lorenzo Stoakes
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