======================================================
WARNING: possible circular locking dependency detected
6.2.0-syzkaller-13206-ga5f1da6601a0 #0 Not tainted
------------------------------------------------------
syz-executor.2/28538 is trying to acquire lock:
ffff888028ede3f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: __jbd2_log_wait_for_space+0x238/0x4b0 fs/jbd2/checkpoint.c:110
but task is already holding lock:
ffff88805ed8dfe8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline]
ffff88805ed8dfe8 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0x5d3/0x2590 fs/ext4/inode.c:5545
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (mapping.invalidate_lock){++++}-{3:3}:
down_write+0x92/0x200 kernel/locking/rwsem.c:1573
filemap_invalidate_lock include/linux/fs.h:803 [inline]
ext4_setattr+0x5d3/0x2590 fs/ext4/inode.c:5545
notify_change+0xb2c/0x1180 fs/attr.c:482
do_truncate+0x143/0x200 fs/open.c:66
do_sys_ftruncate+0x53a/0x770 fs/open.c:194
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 (&sb->s_type->i_mutex_key#8){++++}-{3:3}:
down_read+0x3d/0x50 kernel/locking/rwsem.c:1520
inode_lock_shared include/linux/fs.h:768 [inline]
ext4_bmap+0x52/0x470 fs/ext4/inode.c:3242
bmap+0xae/0x120 fs/inode.c:1799
jbd2_journal_bmap+0xac/0x1c0 fs/jbd2/journal.c:976
__jbd2_journal_erase fs/jbd2/journal.c:1788 [inline]
jbd2_journal_flush+0x87b/0xc90 fs/jbd2/journal.c:2491
ext4_ioctl_checkpoint fs/ext4/ioctl.c:1082 [inline]
__ext4_ioctl+0xb3f/0x4c90 fs/ext4/ioctl.c:1590
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
-> #0 (&journal->j_checkpoint_mutex){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3098 [inline]
check_prevs_add kernel/locking/lockdep.c:3217 [inline]
validate_chain kernel/locking/lockdep.c:3832 [inline]
__lock_acquire+0x2ec7/0x5d40 kernel/locking/lockdep.c:5056
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1e3/0x670 kernel/locking/lockdep.c:5634
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
mutex_lock_io_nested+0x143/0x11a0 kernel/locking/mutex.c:833
__jbd2_log_wait_for_space+0x238/0x4b0 fs/jbd2/checkpoint.c:110
add_transaction_credits+0xa2d/0xb70 fs/jbd2/transaction.c:298
start_this_handle+0x3ae/0x14e0 fs/jbd2/transaction.c:422
jbd2__journal_start+0x39d/0x9d0 fs/jbd2/transaction.c:520
__ext4_journal_start_sb+0x706/0x890 fs/ext4/ext4_jbd2.c:111
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_truncate+0x5b5/0x1620 fs/ext4/inode.c:4315
ext4_setattr+0x19ed/0x2590 fs/ext4/inode.c:5622
notify_change+0xb2c/0x1180 fs/attr.c:482
do_truncate+0x143/0x200 fs/open.c:66
handle_truncate fs/namei.c:3219 [inline]
do_open fs/namei.c:3564 [inline]
path_openat+0x2083/0x2750 fs/namei.c:3715
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1312
do_sys_open fs/open.c:1328 [inline]
__do_sys_openat fs/open.c:1344 [inline]
__se_sys_openat fs/open.c:1339 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1339
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_checkpoint_mutex --> &sb->s_type->i_mutex_key#8 --> mapping.invalidate_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(mapping.invalidate_lock);
lock(&sb->s_type->i_mutex_key#8);
lock(mapping.invalidate_lock);
lock(&journal->j_checkpoint_mutex);
*** DEADLOCK ***
3 locks held by syz-executor.2/28538:
#0: ffff888028eda460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3553 [inline]
#0: ffff888028eda460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x19a4/0x2750 fs/namei.c:3715
#1: ffff88805ed8de48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff88805ed8de48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:64
#2: ffff88805ed8dfe8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline]
#2: ffff88805ed8dfe8 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0x5d3/0x2590 fs/ext4/inode.c:5545
stack backtrace:
CPU: 0 PID: 28538 Comm: syz-executor.2 Not tainted 6.2.0-syzkaller-13206-ga5f1da6601a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2178
check_prev_add kernel/locking/lockdep.c:3098 [inline]
check_prevs_add kernel/locking/lockdep.c:3217 [inline]
validate_chain kernel/locking/lockdep.c:3832 [inline]
__lock_acquire+0x2ec7/0x5d40 kernel/locking/lockdep.c:5056
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1e3/0x670 kernel/locking/lockdep.c:5634
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
mutex_lock_io_nested+0x143/0x11a0 kernel/locking/mutex.c:833
__jbd2_log_wait_for_space+0x238/0x4b0 fs/jbd2/checkpoint.c:110
add_transaction_credits+0xa2d/0xb70 fs/jbd2/transaction.c:298
start_this_handle+0x3ae/0x14e0 fs/jbd2/transaction.c:422
jbd2__journal_start+0x39d/0x9d0 fs/jbd2/transaction.c:520
__ext4_journal_start_sb+0x706/0x890 fs/ext4/ext4_jbd2.c:111
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_truncate+0x5b5/0x1620 fs/ext4/inode.c:4315
ext4_setattr+0x19ed/0x2590 fs/ext4/inode.c:5622
notify_change+0xb2c/0x1180 fs/attr.c:482
do_truncate+0x143/0x200 fs/open.c:66
handle_truncate fs/namei.c:3219 [inline]
do_open fs/namei.c:3564 [inline]
path_openat+0x2083/0x2750 fs/namei.c:3715
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1312
do_sys_open fs/open.c:1328 [inline]
__do_sys_openat fs/open.c:1344 [inline]
__se_sys_openat fs/open.c:1339 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1339
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: 0033:0x7fe27e28c169
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:00007fe27ef67168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe27e3abf80 RCX: 00007fe27e28c169
RDX: 0000000000007a05 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007fe27e2e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001700 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6c23330f R14: 00007fe27ef67300 R15: 0000000000022000
</TASK>