R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3956416128 R14: 00007f3956416090 R15: 00007ffcaea68888
 </TASK>
------------[ cut here ]------------
ret
WARNING: kernel/trace/blktrace.c:1336 at blk_register_tracepoints+0x358/0x440 kernel/trace/blktrace.c:1336, CPU#0: syz.4.2343/17598
Modules linked in:
CPU: 0 UID: 0 PID: 17598 Comm: syz.4.2343 Tainted: G     U       L      syzkaller #0 PREEMPT(full) 
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:blk_register_tracepoints+0x358/0x440 kernel/trace/blktrace.c:1336
Code: f7 ff 5b e9 da c8 79 09 e8 95 99 f7 ff 90 0f 0b 90 e9 ea fc ff ff e8 87 99 f7 ff 90 0f 0b 90 e9 09 fd ff ff e8 79 99 f7 ff 90 <0f> 0b 90 e9 28 fd ff ff e8 6b 99 f7 ff 90 0f 0b 90 e9 47 fd ff ff
RSP: 0018:ffffc90002e77af8 EFLAGS: 00010283
RAX: 0000000000047257 RBX: 00000000fffffff4 RCX: ffffc90010118000
RDX: 0000000000080000 RSI: ffffffff821063e7 RDI: ffff888032669f00
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: fffffffffffc6e40 R12: 200000000040000d
R13: ffff888027b937e0 R14: ffffc90002e77d98 R15: 0000000000000001
FS:  00007f39570d16c0(0000) GS:ffff88812438e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000017000 CR3: 000000004a1e2000 CR4: 00000000003526f0
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:786
 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:63 [inline]
 do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f395619ce59
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:00007f39570d1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3956416090 RCX: 00007f395619ce59
RDX: 00002000000000c0 RSI: 00000000c0481273 RDI: 0000000000000006
RBP: 00007f3956232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3956416128 R14: 00007f3956416090 R15: 00007ffcaea68888
 </TASK>