=============================
[ BUG: Invalid wait context ]
6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0 Not tainted
-----------------------------
syz-executor/5843 is trying to lock:
ffff8880b873e8d8 (&crtc->commit_lock){+.+.}-{3:3}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
other info that might help us debug this:
context-{5:5}
4 locks held by syz-executor/5843:
 #0: ffffffff8e60b058 (tasklist_lock){.+.+}-{3:3}, at: kill_something_info kernel/signal.c:1582 [inline]
 #0: ffffffff8e60b058 (tasklist_lock){.+.+}-{3:3}, at: __do_sys_kill kernel/signal.c:3938 [inline]
 #0: ffffffff8e60b058 (tasklist_lock){.+.+}-{3:3}, at: __se_sys_kill+0x220/0x5d0 kernel/signal.c:3932
 #1: ffff88801ef03798 (&sighand->siglock){....}-{3:3}, at: __lock_task_sighand+0x149/0x2d0 kernel/signal.c:1379
 #2: ffff888027918a18 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
 #2: ffff888027918a18 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xc2/0x1470 kernel/sched/core.c:4205
 #3: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
stack backtrace:
CPU: 0 UID: 0 PID: 5843 Comm: syz-executor Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
 check_wait_context kernel/locking/lockdep.c:4898 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 _double_lock_balance kernel/sched/sched.h:2989 [inline]
 double_lock_balance kernel/sched/sched.h:3034 [inline]
 find_lock_lowest_rq+0x1e1/0x670 kernel/sched/rt.c:1914
 push_rt_task+0x144/0x790 kernel/sched/rt.c:2048
 push_rt_tasks kernel/sched/rt.c:2096 [inline]
 task_woken_rt+0x14c/0x220 kernel/sched/rt.c:2394
 ttwu_do_activate+0x30c/0x760 kernel/sched/core.c:3732
 ttwu_queue kernel/sched/core.c:3993 [inline]
 try_to_wake_up+0x89b/0x1470 kernel/sched/core.c:4321
 signal_wake_up_state+0xb4/0x120 kernel/signal.c:733
 signal_wake_up include/linux/sched/signal.h:445 [inline]
 complete_signal+0xb36/0xcf0 kernel/signal.c:1022
 __send_signal_locked+0xbd4/0xe90 kernel/signal.c:1152
 do_send_sig_info kernel/signal.c:1268 [inline]
 group_send_sig_info+0x292/0x310 kernel/signal.c:1418
 __kill_pgrp_info kernel/signal.c:1434 [inline]
 kill_something_info kernel/signal.c:1584 [inline]
 __do_sys_kill kernel/signal.c:3938 [inline]
 __se_sys_kill+0x431/0x5d0 kernel/signal.c:3932
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28dc522137
Code: 48 83 c4 08 c3 66 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff 64 89 02 b8 ff ff ff ff eb e4 0f 1f 80 00 00 00 00 b8 3e 00 00 00 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:00007ffc5c390438 EFLAGS: 00000297 ORIG_RAX: 000000000000003e
RAX: ffffffffffffffda RBX: 00000000000000f6 RCX: 00007f28dc522137
RDX: 0000000000000424 RSI: 0000000000000009 RDI: 00000000ffffff0a
RBP: 00007ffc5c39046c R08: 000000000c864834 R09: 7fffffffffffffff
R10: 00007f28dd452038 R11: 0000000000000297 R12: 0000000000000064
R13: 000000000003cd3e R14: 00007ffc5c3904c0 R15: 000000000000004d
 </TASK>
BUG: unable to handle page fault for address: fffffbfff3f8171b
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5843 Comm: syz-executor Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189
Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00
RSP: 0018:ffffc900040275e0 EFLAGS: 00010086
RAX: 000000000172ce01 RBX: 1ffffffff3f8171b RCX: ffffffff817ac174
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9fc0b8d8
RBP: ffffffffffffffff R08: ffffffff9fc0b8df R09: 1ffffffff3f8171b
R10: dffffc0000000000 R11: fffffbfff3f8171b R12: ffff88802a1f0ac4
R13: ffff88802a1f0000 R14: dffffc0000000001 R15: fffffbfff3f8171c
FS:  0000555567c43500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff3f8171b CR3: 000000005d1e8000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5196
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 _double_lock_balance kernel/sched/sched.h:2989 [inline]
 double_lock_balance kernel/sched/sched.h:3034 [inline]
 find_lock_lowest_rq+0x1e1/0x670 kernel/sched/rt.c:1914
 push_rt_task+0x144/0x790 kernel/sched/rt.c:2048
 push_rt_tasks kernel/sched/rt.c:2096 [inline]
 task_woken_rt+0x14c/0x220 kernel/sched/rt.c:2394
 ttwu_do_activate+0x30c/0x760 kernel/sched/core.c:3732
 ttwu_queue kernel/sched/core.c:3993 [inline]
 try_to_wake_up+0x89b/0x1470 kernel/sched/core.c:4321
 signal_wake_up_state+0xb4/0x120 kernel/signal.c:733
 signal_wake_up include/linux/sched/signal.h:445 [inline]
 complete_signal+0xb36/0xcf0 kernel/signal.c:1022
 __send_signal_locked+0xbd4/0xe90 kernel/signal.c:1152
 do_send_sig_info kernel/signal.c:1268 [inline]
 group_send_sig_info+0x292/0x310 kernel/signal.c:1418
 __kill_pgrp_info kernel/signal.c:1434 [inline]
 kill_something_info kernel/signal.c:1584 [inline]
 __do_sys_kill kernel/signal.c:3938 [inline]
 __se_sys_kill+0x431/0x5d0 kernel/signal.c:3932
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28dc522137
Code: 48 83 c4 08 c3 66 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff 64 89 02 b8 ff ff ff ff eb e4 0f 1f 80 00 00 00 00 b8 3e 00 00 00 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:00007ffc5c390438 EFLAGS: 00000297 ORIG_RAX: 000000000000003e
RAX: ffffffffffffffda RBX: 00000000000000f6 RCX: 00007f28dc522137
RDX: 0000000000000424 RSI: 0000000000000009 RDI: 00000000ffffff0a
RBP: 00007ffc5c39046c R08: 000000000c864834 R09: 7fffffffffffffff
R10: 00007f28dd452038 R11: 0000000000000297 R12: 0000000000000064
R13: 000000000003cd3e R14: 00007ffc5c3904c0 R15: 000000000000004d
 </TASK>
Modules linked in:
CR2: fffffbfff3f8171b
---[ end trace 0000000000000000 ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189
Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00
RSP: 0018:ffffc900040275e0 EFLAGS: 00010086
RAX: 000000000172ce01 RBX: 1ffffffff3f8171b RCX: ffffffff817ac174
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9fc0b8d8
RBP: ffffffffffffffff R08: ffffffff9fc0b8df R09: 1ffffffff3f8171b
R10: dffffc0000000000 R11: fffffbfff3f8171b R12: ffff88802a1f0ac4
R13: ffff88802a1f0000 R14: dffffc0000000001 R15: fffffbfff3f8171c
FS:  0000555567c43500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff3f8171b CR3: 000000005d1e8000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 7 bytes skipped:
   0:	df 4f 8d             	fisttps -0x73(%rdi)
   3:	3c 31                	cmp    $0x31,%al
   5:	4c 89 fd             	mov    %r15,%rbp
   8:	4c 29 dd             	sub    %r11,%rbp
   b:	48 83 fd 10          	cmp    $0x10,%rbp
   f:	7f 29                	jg     0x3a
  11:	48 85 ed             	test   %rbp,%rbp
  14:	0f 84 3e 01 00 00    	je     0x158
  1a:	4c 89 cd             	mov    %r9,%rbp
  1d:	48 f7 d5             	not    %rbp
  20:	48 01 dd             	add    %rbx,%rbp
* 23:	41 80 3b 00          	cmpb   $0x0,(%r11) <-- trapping instruction
  27:	0f 85 c9 01 00 00    	jne    0x1f6
  2d:	49 ff c3             	inc    %r11
  30:	48 ff c5             	inc    %rbp
  33:	75 ee                	jne    0x23
  35:	e9                   	.byte 0xe9
  36:	1e                   	(bad)
  37:	01 00                	add    %eax,(%rax)