REISERFS (device loop1): checking transaction log (loop1)
REISERFS (device loop1): Using r5 hash to sort names
REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage.
======================================================
WARNING: possible circular locking dependency detected
5.15.164-syzkaller #0 Not tainted
------------------------------------------------------
syz.1.140/4266 is trying to acquire lock:
ffff88807896c090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x76/0xd0 fs/reiserfs/lock.c:27
but task is already holding lock:
ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1299 [inline]
ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1472 [inline]
ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1479 [inline]
ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x4a4/0x1400 mm/mempolicy.c:1475
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&mm->mmap_lock){++++}-{3:3}:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
__might_fault+0xb4/0x110 mm/memory.c:5328
reiserfs_ioctl+0x11d/0x340 fs/reiserfs/ioctl.c:96
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #0 (&sbi->lock){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
__mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
reiserfs_write_lock+0x76/0xd0 fs/reiserfs/lock.c:27
map_block_for_writepage fs/reiserfs/inode.c:2396 [inline]
reiserfs_write_full_page fs/reiserfs/inode.c:2593 [inline]
reiserfs_writepage+0xaa5/0x35e0 fs/reiserfs/inode.c:2745
writeout mm/migrate.c:837 [inline]
fallback_migrate_page mm/migrate.c:861 [inline]
move_to_new_page+0x8bc/0xde0 mm/migrate.c:912
__unmap_and_move mm/migrate.c:1077 [inline]
unmap_and_move mm/migrate.c:1218 [inline]
migrate_pages+0x1fa1/0x3470 mm/migrate.c:1495
do_mbind mm/mempolicy.c:1325 [inline]
kernel_mbind mm/mempolicy.c:1472 [inline]
__do_sys_mbind mm/mempolicy.c:1479 [inline]
__se_sys_mbind+0x10d0/0x1400 mm/mempolicy.c:1475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&mm->mmap_lock);
lock(&sbi->lock);
lock(&mm->mmap_lock);
lock(&sbi->lock);
*** DEADLOCK ***
1 lock held by syz.1.140/4266:
#0: ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1299 [inline]
#0: ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1472 [inline]
#0: ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1479 [inline]
#0: ffff888019e07128 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x4a4/0x1400 mm/mempolicy.c:1475
stack backtrace:
CPU: 0 PID: 4266 Comm: syz.1.140 Not tainted 5.15.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
__mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
reiserfs_write_lock+0x76/0xd0 fs/reiserfs/lock.c:27
map_block_for_writepage fs/reiserfs/inode.c:2396 [inline]
reiserfs_write_full_page fs/reiserfs/inode.c:2593 [inline]
reiserfs_writepage+0xaa5/0x35e0 fs/reiserfs/inode.c:2745
writeout mm/migrate.c:837 [inline]
fallback_migrate_page mm/migrate.c:861 [inline]
move_to_new_page+0x8bc/0xde0 mm/migrate.c:912
__unmap_and_move mm/migrate.c:1077 [inline]
unmap_and_move mm/migrate.c:1218 [inline]
migrate_pages+0x1fa1/0x3470 mm/migrate.c:1495
do_mbind mm/mempolicy.c:1325 [inline]
kernel_mbind mm/mempolicy.c:1472 [inline]
__do_sys_mbind mm/mempolicy.c:1479 [inline]
__se_sys_mbind+0x10d0/0x1400 mm/mempolicy.c:1475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f67727559f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6770bd4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f67728e3f80 RCX: 00007f67727559f9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007f67727c38ee R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f67728e3f80 R15: 00007fff6d0bfc68
</TASK>