------------[ cut here ]------------
task_rq(p) != rq
WARNING: kernel/sched/fair.c:7656 at hrtick_start_fair+0x196/0x1f0 kernel/sched/fair.c:7656, CPU#0: syz-executor/5608
Modules linked in:
CPU: 0 UID: 0 PID: 5608 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hrtick_start_fair+0x196/0x1f0 kernel/sched/fair.c:7656
Code: 42 80 3c 20 00 74 08 4c 89 ff e8 85 f5 97 00 4d 39 37 0f 85 0c ff ff ff 48 89 df 5b 41 5c 41 5d 41 5e 41 5f e9 7b 64 fa ff 90 <0f> 0b 90 e9 d1 fe ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 82
RSP: 0018:ffffc90005167820 EFLAGS: 00010087
RAX: ffff8880b873ba40 RBX: ffff8880b863ba40 RCX: ffffffff8197d8ae
RDX: 0000000000000000 RSI: ffff8880203f3e00 RDI: ffff8880b863ba40
RBP: dffffc0000000000 R08: ffffffff8fcf390f R09: 1ffffffff1f9e721
R10: dffffc0000000000 R11: fffffbfff1f9e722 R12: dffffc0000000000
R13: 1ffff110170c78d6 R14: ffff8880203f3e00 R15: ffffffff8dc257d8
FS:  00005555727c5500(0000) GS:ffff888125a6b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000008408 CR3: 000000004076c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 set_next_task_fair+0xa68/0xce0 kernel/sched/fair.c:15065
 put_prev_set_next_task kernel/sched/sched.h:2770 [inline]
 pick_next_task kernel/sched/core.c:6442 [inline]
 __schedule+0x3e03/0x5550 kernel/sched/core.c:7143
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8c0 kernel/entry/common.c:167
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:schedule+0x5/0x360 kernel/sched/core.c:7313
Code: 24 e9 48 e9 ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <41> 57 41 56 41 55 41 54 53 49 bd 00 00 00 00 00 fc ff df 65 48 8b
RSP: 0018:ffffc90005167bd0 EFLAGS: 00000293
RAX: ffffffff8b415eb2 RBX: 0000000000000001 RCX: ffff888040ed3e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90005167cf0 R08: ffffffff8fcf38f7 R09: 1ffffffff1f9e71e
R10: dffffc0000000000 R11: fffffbfff1f9e71f R12: dffffc0000000000
R13: ffffc90005167d90 R14: ffff888040ed3e00 R15: ffffc90005167d40
 do_nanosleep+0x287/0x730 kernel/time/hrtimer.c:2399
 hrtimer_nanosleep+0x217/0x450 kernel/time/hrtimer.c:2445
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1406 [inline]
 __se_sys_clock_nanosleep+0x35b/0x3b0 kernel/time/posix-timers.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c7b76d68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffef8c67048 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00005555727c5500 RCX: 00007f7c7b76d68e
RDX: 00007ffef8c670a0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffef8c6710c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000001388
R13: 00000000000927c0 R14: 0000000000027722 R15: 00007ffef8c67160
 </TASK>
----------------
Code disassembly (best guess):
   0:	24 e9                	and    $0xe9,%al
   2:	48 e9 ff ff 66 66    	rex.W jmp 0x66670007
   8:	66 66 66 66 2e 0f 1f 	data16 data16 data16 cs nopw 0x0(%rax,%rax,1)
   f:	84 00 00 00 00 00
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	f3 0f 1e fa          	endbr64
  29:	55                   	push   %rbp
* 2a:	41 57                	push   %r15 <-- trapping instruction
  2c:	41 56                	push   %r14
  2e:	41 55                	push   %r13
  30:	41 54                	push   %r12
  32:	53                   	push   %rbx
  33:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  3a:	fc ff df
  3d:	65                   	gs
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b