======================================================
WARNING: possible circular locking dependency detected
6.7.0-rc5-syzkaller-00270-g0e389834672c #0 Not tainted
------------------------------------------------------
syz-executor.0/15059 is trying to acquire lock:
ffff88802e80b090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
but task is already holding lock:
ffff88807ed6e510 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2944
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (sb_pagefaults#2){.+.+}-{0:0}:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1635 [inline]
sb_start_pagefault include/linux/fs.h:1739 [inline]
filemap_page_mkwrite+0x16f/0x640 mm/filemap.c:3577
do_page_mkwrite+0x197/0x470 mm/memory.c:2944
wp_page_shared mm/memory.c:3339 [inline]
do_wp_page+0x1d07/0x4d40 mm/memory.c:3479
handle_pte_fault mm/memory.c:5055 [inline]
__handle_mm_fault mm/memory.c:5180 [inline]
handle_mm_fault+0x1b1c/0x6680 mm/memory.c:5345
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
-> #2 (&vma->vm_lock->lock){++++}-{3:3}:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
down_write+0x3a/0x50 kernel/locking/rwsem.c:1579
vma_start_write include/linux/mm.h:716 [inline]
vma_link+0x2c9/0x540 mm/mmap.c:404
insert_vm_struct+0x19f/0x260 mm/mmap.c:3378
__bprm_mm_init fs/exec.c:281 [inline]
bprm_mm_init fs/exec.c:383 [inline]
alloc_bprm+0x4d5/0x900 fs/exec.c:1532
kernel_execve+0x96/0xa20 fs/exec.c:1987
call_usermodehelper_exec_async+0x233/0x370 kernel/umh.c:110
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
-> #1 (&mm->mmap_lock){++++}-{3:3}:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__might_fault+0xc1/0x120 mm/memory.c:5956
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:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
-> #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+0x1909/0x5ab0 kernel/locking/lockdep.c:3869
__lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__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+0x305/0xda0 fs/fs-writeback.c:2452
generic_update_time fs/inode.c:1943 [inline]
inode_update_time fs/inode.c:1956 [inline]
__file_update_time fs/inode.c:2144 [inline]
file_update_time+0x39b/0x3e0 fs/inode.c:2174
filemap_page_mkwrite+0x27b/0x640 mm/filemap.c:3578
do_page_mkwrite+0x197/0x470 mm/memory.c:2944
wp_page_shared mm/memory.c:3339 [inline]
do_wp_page+0x1d07/0x4d40 mm/memory.c:3479
handle_pte_fault mm/memory.c:5055 [inline]
__handle_mm_fault mm/memory.c:5180 [inline]
handle_mm_fault+0x1b1c/0x6680 mm/memory.c:5345
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
other info that might help us debug this:
Chain exists of:
&sbi->lock --> &vma->vm_lock->lock --> sb_pagefaults#2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
rlock(sb_pagefaults#2);
lock(&vma->vm_lock->lock);
lock(sb_pagefaults#2);
lock(&sbi->lock);
*** DEADLOCK ***
2 locks held by syz-executor.0/15059:
#0: ffff88807cc29220 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:663 [inline]
#0: ffff88807cc29220 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f6/0x6f0 mm/memory.c:5501
#1: ffff88807ed6e510 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2944
stack backtrace:
CPU: 1 PID: 15059 Comm: syz-executor.0 Not tainted 6.7.0-rc5-syzkaller-00270-g0e389834672c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
check_noncircular+0x366/0x490 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+0x1909/0x5ab0 kernel/locking/lockdep.c:3869
__lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__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+0x305/0xda0 fs/fs-writeback.c:2452
generic_update_time fs/inode.c:1943 [inline]
inode_update_time fs/inode.c:1956 [inline]
__file_update_time fs/inode.c:2144 [inline]
file_update_time+0x39b/0x3e0 fs/inode.c:2174
filemap_page_mkwrite+0x27b/0x640 mm/filemap.c:3578
do_page_mkwrite+0x197/0x470 mm/memory.c:2944
wp_page_shared mm/memory.c:3339 [inline]
do_wp_page+0x1d07/0x4d40 mm/memory.c:3479
handle_pte_fault mm/memory.c:5055 [inline]
__handle_mm_fault mm/memory.c:5180 [inline]
handle_mm_fault+0x1b1c/0x6680 mm/memory.c:5345
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fe3d285dc2b
Code: fa 10 73 2d 83 fa 08 73 46 83 fa 04 73 16 83 fa 01 7c 10 8a 0e 74 0a 0f b7 74 16 fe 66 89 74 17 fe 88 0f c3 8b 4c 16 fc 8b 36 <89> 4c 17 fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5
RSP: 002b:00007ffd05a16608 EFLAGS: 00010202
RAX: 0000000020000000 RBX: 00007ffd05a16718 RCX: 0000000000737562
RDX: 0000000000000006 RSI: 0000000075622f2e RDI: 0000000020000000
RBP: 0000000000000032 R08: 00007fe3d2800000 R09: 000000000000022a
R10: 0000000081bff962 R11: 0000000000000246 R12: 00007fe3d2401cc8
R13: fffffffffffffffe R14: 00007fe3d2400000 R15: 00007fe3d2401cd0
</TASK>