------------[ cut here ]------------
ret
WARNING: kernel/trace/blktrace.c:1334 at blk_register_tracepoints kernel/trace/blktrace.c:1334 [inline], CPU#0: syz.8.3035/15308
WARNING: kernel/trace/blktrace.c:1334 at get_probe_ref+0x385/0x470 kernel/trace/blktrace.c:492, CPU#0: syz.8.3035/15308
Modules linked in:
CPU: 0 UID: 0 PID: 15308 Comm: syz.8.3035 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:blk_register_tracepoints kernel/trace/blktrace.c:1334 [inline]
RIP: 0010:get_probe_ref+0x385/0x470 kernel/trace/blktrace.c:492
Code: 00 01 00 00 e8 7c 2f f7 ff 48 c7 c7 e0 d1 fc 8e 5b e9 1f f2 26 0a e8 6a 2f f7 ff 90 0f 0b 90 e9 e8 fc ff ff e8 5c 2f f7 ff 90 <0f> 0b 90 e9 07 fd ff ff e8 4e 2f f7 ff 90 0f 0b 90 e9 26 fd ff ff
RSP: 0018:ffffc900034df850 EFLAGS: 00010287
RAX: ffffffff81d0d594 RBX: 00000000fffffff4 RCX: 0000000000080000
RDX: ffffc90011893000 RSI: 000000000000d3c4 RDI: 000000000000d3c5
RBP: ffffc900034dfa90 R08: ffffc900034df787 R09: 1ffff9200069bef0
R10: dffffc0000000000 R11: fffff5200069bef1 R12: 1ffff9200069bf14
R13: ffff888027f45dec R14: dffffc0000000000 R15: 0000000000400140
FS:  00007f614e3f66c0(0000) GS:ffff88812485b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe2d41a19b0 CR3: 0000000021b90000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000001800
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 blk_trace_setup+0x379/0x520 kernel/trace/blktrace.c:795
 blk_trace_ioctl+0x37f/0x910 kernel/trace/blktrace.c:937
 blkdev_ioctl+0x4c1/0x740 block/ioctl.c:787
 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:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f615019e159
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:00007f614e3f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6150425fa0 RCX: 00007f615019e159
RDX: 0000200000000440 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007f615023503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6150426038 R14: 00007f6150425fa0 R15: 00007ffc80e08448
 </TASK>