REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
======================================================
WARNING: possible circular locking dependency detected
6.1.0-next-20221216-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.0/5270 is trying to acquire lock:
ffffc900053010f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
ffffc900053010f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:534 [inline]
ffffc900053010f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x293/0x10e0 fs/reiserfs/journal.c:3047
but task is already holding lock:
ffff88802198a460 (sb_writers#15){.+.+}-{0:0}, at: reiserfs_ioctl+0x1a0/0x450 fs/reiserfs/ioctl.c:103
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (sb_writers#15){.+.+}-{0:0}:
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1811 [inline]
sb_start_write include/linux/fs.h:1886 [inline]
mnt_want_write_file+0x92/0x590 fs/namespace.c:552
reiserfs_ioctl+0x1a0/0x450 fs/reiserfs/ioctl.c:103
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #1 (&sbi->lock){+.+.}-{3:3}:
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x12f/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock_nested+0x69/0xe0 fs/reiserfs/lock.c:78
reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:815 [inline]
lock_journal fs/reiserfs/journal.c:534 [inline]
do_journal_begin_r+0x29d/0x10e0 fs/reiserfs/journal.c:3047
journal_begin+0x166/0x400 fs/reiserfs/journal.c:3255
reiserfs_fill_super+0x1c2f/0x2e90 fs/reiserfs/super.c:2104
mount_bdev+0x351/0x410 fs/super.c:1359
legacy_get_tree+0x109/0x220 fs/fs_context.c:610
vfs_get_tree+0x8d/0x2f0 fs/super.c:1489
do_new_mount fs/namespace.c:3145 [inline]
path_mount+0x132a/0x1e20 fs/namespace.c:3475
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount fs/namespace.c:3674 [inline]
__x64_sys_mount+0x283/0x300 fs/namespace.c:3674
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (&journal->j_mutex){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3097 [inline]
check_prevs_add kernel/locking/lockdep.c:3216 [inline]
validate_chain kernel/locking/lockdep.c:3831 [inline]
__lock_acquire+0x2a43/0x56d0 kernel/locking/lockdep.c:5055
lock_acquire.part.0+0x11a/0x350 kernel/locking/lockdep.c:5668
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x12f/0x1360 kernel/locking/mutex.c:747
reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
lock_journal fs/reiserfs/journal.c:534 [inline]
do_journal_begin_r+0x293/0x10e0 fs/reiserfs/journal.c:3047
journal_begin+0x166/0x400 fs/reiserfs/journal.c:3255
reiserfs_dirty_inode+0x103/0x260 fs/reiserfs/super.c:710
__mark_inode_dirty+0x247/0x11e0 fs/fs-writeback.c:2419
mark_inode_dirty include/linux/fs.h:2462 [inline]
reiserfs_ioctl+0x2d4/0x450 fs/reiserfs/ioctl.c:111
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Chain exists of:
&journal->j_mutex --> &sbi->lock --> sb_writers#15
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(sb_writers#15);
lock(&sbi->lock);
lock(sb_writers#15);
lock(&journal->j_mutex);
*** DEADLOCK ***
1 lock held by syz-executor.0/5270:
#0: ffff88802198a460 (sb_writers#15){.+.+}-{0:0}, at: reiserfs_ioctl+0x1a0/0x450 fs/reiserfs/ioctl.c:103
stack backtrace:
CPU: 0 PID: 5270 Comm: syz-executor.0 Not tainted 6.1.0-next-20221216-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2177
check_prev_add kernel/locking/lockdep.c:3097 [inline]
check_prevs_add kernel/locking/lockdep.c:3216 [inline]
validate_chain kernel/locking/lockdep.c:3831 [inline]
__lock_acquire+0x2a43/0x56d0 kernel/locking/lockdep.c:5055
lock_acquire.part.0+0x11a/0x350 kernel/locking/lockdep.c:5668
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x12f/0x1360 kernel/locking/mutex.c:747
reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
lock_journal fs/reiserfs/journal.c:534 [inline]
do_journal_begin_r+0x293/0x10e0 fs/reiserfs/journal.c:3047
journal_begin+0x166/0x400 fs/reiserfs/journal.c:3255
reiserfs_dirty_inode+0x103/0x260 fs/reiserfs/super.c:710
__mark_inode_dirty+0x247/0x11e0 fs/fs-writeback.c:2419
mark_inode_dirty include/linux/fs.h:2462 [inline]
reiserfs_ioctl+0x2d4/0x450 fs/reiserfs/ioctl.c:111
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff903c8c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff904956168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff903dabf80 RCX: 00007ff903c8c0d9
RDX: 0000000020000380 RSI: 0000000040087602 RDI: 0000000000000004
RBP: 00007ff903ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8188601f R14: 00007ff904956300 R15: 0000000000022000
</TASK>