R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007facdcfe5fa0 R14: 00007facdcfe5fa0 R15: 0000000000000003
 </TASK>
------------[ cut here ]------------
WARNING: kernel/trace/blktrace.c:1357 at blk_register_tracepoints kernel/trace/blktrace.c:1357 [inline], CPU#0: syz.0.18/5484
WARNING: kernel/trace/blktrace.c:1357 at get_probe_ref+0x41f/0x470 kernel/trace/blktrace.c:493, CPU#0: syz.0.18/5484
Modules linked in:
CPU: 0 UID: 0 PID: 5484 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:blk_register_tracepoints kernel/trace/blktrace.c:1357 [inline]
RIP: 0010:get_probe_ref+0x41f/0x470 kernel/trace/blktrace.c:493
Code: 0f 0b 90 e9 ff fd ff ff e8 4e a2 f7 ff 90 0f 0b 90 e9 1e fe ff ff e8 40 a2 f7 ff 90 0f 0b 90 e9 3d fe ff ff e8 32 a2 f7 ff 90 <0f> 0b 90 e9 5c fe ff ff e8 24 a2 f7 ff 90 0f 0b 90 e9 7b fe ff ff
RSP: 0018:ffffc90002a8fa90 EFLAGS: 00010293
RAX: ffffffff81c9b8ee RBX: 00000000fffffff4 RCX: ffff888036e40000
RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000
RBP: ffffc90002a8fdd0 R08: ffffc90002a8f9c7 R09: 1ffff92000551f38
R10: dffffc0000000000 R11: fffff52000551f39 R12: ffffc90002a8fc40
R13: ffffc90002a8fd40 R14: ffff888034c4d4b8 R15: 1ffff92000551f58
FS:  000055557fd08500(0000) GS:ffff88808d683000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000093d20 CR3: 0000000011e62000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 blk_trace_setup2 kernel/trace/blktrace.c:829 [inline]
 blk_trace_ioctl+0x626/0x6e0 kernel/trace/blktrace.c:931
 blkdev_ioctl+0x4a2/0x710 block/ioctl.c:696
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7facdcd8f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffea5cb5c28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007facdcfe5fa0 RCX: 00007facdcd8f7c9
RDX: 0000200000000240 RSI: 00000000c0c0128e RDI: 0000000000000003
RBP: 00007ffea5cb5c80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007facdcfe5fa0 R14: 00007facdcfe5fa0 R15: 0000000000000003
 </TASK>