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:00007fdf696ef028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdf68a15fa0 RCX: 00007fdf6879c799
RDX: 0000200000000240 RSI: 00000000c0481273 RDI: 000000000000000a
RBP: 00007fdf68832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdf68a16038 R14: 00007fdf68a15fa0 R15: 00007ffcd80d16b8
 </TASK>
------------[ cut here ]------------
ret
WARNING: kernel/trace/blktrace.c:1350 at blk_register_tracepoints+0x3ba/0x440 kernel/trace/blktrace.c:1350, CPU#0: syz.0.4290/27426
Modules linked in:
CPU: 0 UID: 0 PID: 27426 Comm: syz.0.4290 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:blk_register_tracepoints+0x3ba/0x440 kernel/trace/blktrace.c:1350
Code: 0f 0b 90 e9 a4 fd ff ff e8 43 dc f7 ff 90 0f 0b 90 e9 c3 fd ff ff e8 35 dc f7 ff 90 0f 0b 90 e9 e2 fd ff ff e8 27 dc f7 ff 90 <0f> 0b 90 e9 01 fe ff ff e8 19 dc f7 ff 90 0f 0b 90 e9 20 fe ff ff
RSP: 0018:ffffc90003767af8 EFLAGS: 00010287
RAX: 0000000000021096 RBX: 00000000fffffff4 RCX: ffffc90017bb9000
RDX: 0000000000080000 RSI: ffffffff82103fb9 RDI: ffff888032773d00
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 000000000000c370 R12: 200000000040000d
R13: ffff888027dea620 R14: ffffc90003767d98 R15: 0000000000000001
FS:  00007fdf696ef6c0(0000) GS:ffff888124349000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f736c000020 CR3: 0000000022b80000 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:793
 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+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdf6879c799
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:00007fdf696ef028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdf68a15fa0 RCX: 00007fdf6879c799
RDX: 0000200000000240 RSI: 00000000c0481273 RDI: 000000000000000a
RBP: 00007fdf68832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdf68a16038 R14: 00007fdf68a15fa0 R15: 00007ffcd80d16b8
 </TASK>
----------------
Code disassembly (best guess):
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
* 2a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 c7 c1 e8 ff ff ff 	mov    $0xffffffffffffffe8,%rcx
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W