REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using tea hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
======================================================
WARNING: possible circular locking dependency detected
6.6.0-rc6-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor228/5790 is trying to acquire lock:
ffff88807a93a090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
but task is already holding lock:
ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline]
ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17b/0x410 mm/util.c:544
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&mm->mmap_lock){++++}-{3:3}:
__might_fault+0xc1/0x120 mm/memory.c:5896
reiserfs_ioctl+0x125/0x2f0 fs/reiserfs/ioctl.c:96
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xf8/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (&sbi->lock){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3868 [inline]
__lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747
reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
reiserfs_dirty_inode+0xf2/0x240 fs/reiserfs/super.c:704
__mark_inode_dirty+0x305/0xd90 fs/fs-writeback.c:2435
generic_update_time fs/inode.c:1936 [inline]
inode_update_time fs/inode.c:1949 [inline]
touch_atime+0x34d/0x590 fs/inode.c:2020
file_accessed include/linux/fs.h:2291 [inline]
generic_file_mmap+0xc6/0x120 mm/filemap.c:3662
call_mmap include/linux/fs.h:1961 [inline]
mmap_region+0xfd0/0x2280 mm/mmap.c:2754
do_mmap+0x8d3/0xfa0 mm/mmap.c:1354
vm_mmap_pgoff+0x1dc/0x410 mm/util.c:546
ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1400
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
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 ***
2 locks held by syz-executor228/5790:
#0: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline]
#0: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17b/0x410 mm/util.c:544
#1: ffff88807e858410 (sb_writers#9){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2291 [inline]
#1: ffff88807e858410 (sb_writers#9){.+.+}-{0:0}, at: generic_file_mmap+0xc6/0x120 mm/filemap.c:3662
stack backtrace:
CPU: 0 PID: 5790 Comm: syz-executor228 Not tainted 6.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
check_noncircular+0x375/0x4a0 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3868 [inline]
__lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747
reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
reiserfs_dirty_inode+0xf2/0x240 fs/reiserfs/super.c:704
__mark_inode_dirty+0x305/0xd90 fs/fs-writeback.c:2435
generic_update_time fs/inode.c:1936 [inline]
inode_update_time fs/inode.c:1949 [inline]
touch_atime+0x34d/0x590 fs/inode.c:2020
file_accessed include/linux/fs.h:2291 [inline]
generic_file_mmap+0xc6/0x120 mm/filemap.c:3662
call_mmap include/linux/fs.h:1961 [inline]
mmap_region+0xfd0/0x2280 mm/mmap.c:2754
do_mmap+0x8d3/0xfa0 mm/mmap.c:1354
vm_mmap_pgoff+0x1dc/0x410 mm/util.c:546
ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1400
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa6f169f129
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 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:00007ffc24dd1848 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa6f169f129
RDX: 0000000000000000 RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 0000000000000004 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 00007ffc24dd18a0
R13: 00007ffc24dd18e0 R14: 0000000000400000 R15: 0000000000000003
</TASK>