------------[ cut here ]------------
rtmutex deadlock detected
WARNING: kernel/locking/rtmutex.c:1698 at rt_mutex_handle_deadlock kernel/locking/rtmutex.c:1698 [inline], CPU#1: syz.2.19/6001
WARNING: kernel/locking/rtmutex.c:1698 at __rt_mutex_slowlock kernel/locking/rtmutex.c:1760 [inline], CPU#1: syz.2.19/6001
WARNING: kernel/locking/rtmutex.c:1698 at __rt_mutex_slowlock_locked+0xeeb/0x25b0 kernel/locking/rtmutex.c:1787, CPU#1: syz.2.19/6001
Modules linked in:
CPU: 1 UID: 0 PID: 6001 Comm: syz.2.19 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:rt_mutex_handle_deadlock kernel/locking/rtmutex.c:1698 [inline]
RIP: 0010:__rt_mutex_slowlock kernel/locking/rtmutex.c:1760 [inline]
RIP: 0010:__rt_mutex_slowlock_locked+0xeeb/0x25b0 kernel/locking/rtmutex.c:1787
Code: 0d 48 8b bc 24 88 00 00 00 e8 51 1a 7c 09 83 7c 24 40 dd 0f 85 3a 0b 00 00 48 8b 7c 24 18 e8 2c 1b 7c 09 48 8d 3d 45 3a cc 0d <67> 48 0f b9 3a 48 8b 9c 24 80 00 00 00 4c 8b b4 24 90 00 00 00 43
RSP: 0018:ffffc900040f6ae0 EFLAGS: 00010286
RAX: 0000000080000000 RBX: ffff888045214e28 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8b87bf80 RDI: ffffffff8f6c4fb0
RBP: ffffc900040f6cb0 R08: ffffffff8f692af7 R09: 1ffffffff1ed255e
R10: dffffc0000000000 R11: fffffbfff1ed255f R12: ffff88803bd7f550
R13: ffff88803bd7dd18 R14: ffff888045213d68 R15: dffffc0000000000
FS: 00007f5edd08e6c0(0000) GS:ffff88812647d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000293cc000 CR4: 00000000003526f0
Call Trace:
<TASK>
rt_mutex_slowlock+0xbd/0x170 kernel/locking/rtmutex.c:1827
__rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline]
rwbase_write_lock+0x14c/0x720 kernel/locking/rwbase_rt.c:251
inode_lock include/linux/fs.h:1029 [inline]
ocfs2_del_inode_from_orphan+0x12e/0x7b0 fs/ocfs2/namei.c:2728
ocfs2_dio_end_io_write fs/ocfs2/aops.c:2379 [inline]
ocfs2_dio_end_io+0xfe3/0x13b0 fs/ocfs2/aops.c:2418
dio_complete+0x254/0x760 fs/direct-io.c:281
__blockdev_direct_IO+0x2d43/0x33d0 fs/direct-io.c:1296
ocfs2_direct_IO+0x24b/0x2c0 fs/ocfs2/aops.c:2455
generic_file_direct_write+0x1d1/0x3f0 mm/filemap.c:4270
__generic_file_write_iter+0x120/0x240 mm/filemap.c:4439
ocfs2_file_write_iter+0x1709/0x1f20 fs/ocfs2/file.c:2476
do_iter_readv_writev+0x624/0x8d0 fs/read_write.c:-1
vfs_writev+0x34c/0x990 fs/read_write.c:1058
do_pwritev fs/read_write.c:1154 [inline]
__do_sys_pwritev2 fs/read_write.c:1212 [inline]
__se_sys_pwritev2+0x17a/0x2a0 fs/read_write.c:1203
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5edda2ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5edd08e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f5eddca5fa0 RCX: 00007f5edda2ce59
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004
RBP: 00007f5eddac2d6f R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000005a00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5eddca6038 R14: 00007f5eddca5fa0 R15: 00007ffef8036c98
</TASK>
----------------
Code disassembly (best guess):
0: 0d 48 8b bc 24 or $0x24bc8b48,%eax
5: 88 00 mov %al,(%rax)
7: 00 00 add %al,(%rax)
9: e8 51 1a 7c 09 call 0x97c1a5f
e: 83 7c 24 40 dd cmpl $0xffffffdd,0x40(%rsp)
13: 0f 85 3a 0b 00 00 jne 0xb53
19: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi
1e: e8 2c 1b 7c 09 call 0x97c1b4f
23: 48 8d 3d 45 3a cc 0d lea 0xdcc3a45(%rip),%rdi # 0xdcc3a6f
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 48 8b 9c 24 80 00 00 mov 0x80(%rsp),%rbx
36: 00
37: 4c 8b b4 24 90 00 00 mov 0x90(%rsp),%r14
3e: 00
3f: 43 rex.XB