R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a68e26038 R14: 00007f6a68e25fa0 R15: 00007ffcc71c3cd8
 </TASK>
------------[ cut here ]------------
ret
WARNING: kernel/trace/blktrace.c:1344 at blk_register_tracepoints+0x390/0x440 kernel/trace/blktrace.c:1344, CPU#3: syz.0.186/6352
Modules linked in:
CPU: 3 UID: 0 PID: 6352 Comm: syz.0.186 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:blk_register_tracepoints+0x390/0x440 kernel/trace/blktrace.c:1344
Code: 0f 0b 90 e9 47 fd ff ff e8 8d 86 f7 ff 90 0f 0b 90 e9 66 fd ff ff e8 7f 86 f7 ff 90 0f 0b 90 e9 85 fd ff ff e8 71 86 f7 ff 90 <0f> 0b 90 e9 a4 fd ff ff e8 63 86 f7 ff 90 0f 0b 90 e9 c3 fd ff ff
RSP: 0018:ffffc900036efb00 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000fffffff4 RCX: 0000000000000000
RDX: ffff88802dae0000 RSI: ffffffff8216de6f RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000fffffff4
R10: ffffc900036ef9bf R11: 0000000000000001 R12: 0000000000000009
R13: ffff8880285137e0 R14: ffffc900036efda0 R15: 0000000000000001
FS:  00007f6a69ab76c0(0000) GS:ffff8880d477c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6a68bed200 CR3: 0000000054858000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 get_probe_ref kernel/trace/blktrace.c:492 [inline]
 blk_trace_setup_finalize+0x320/0x3a0 kernel/trace/blktrace.c:759
 blk_trace_setup+0x254/0x440 kernel/trace/blktrace.c:795
 blk_trace_ioctl+0x245/0x320 kernel/trace/blktrace.c:937
 blkdev_ioctl+0x17c/0x6f0 block/ioctl.c:787
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a68b9fb19
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:00007f6a69ab7028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6a68e25fa0 RCX: 00007f6a68b9fb19
RDX: 0000200000001480 RSI: 00000000c0481273 RDI: 0000000000000004
RBP: 00007f6a68c37b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a68e26038 R14: 00007f6a68e25fa0 R15: 00007ffcc71c3cd8
 </TASK>