=============================
[ BUG: Invalid wait context ]
6.13.0-rc3-syzkaller-00209-g499551201b5f #0 Not tainted
-----------------------------
syz-executor/29689 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/29689:
#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: ffff888032e940d8 (&sighand->siglock){-.-.}-{3:3}, at: __lock_task_sighand+0x149/0x2d0 kernel/signal.c:1379
#2: ffff88803db0c618 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
#2: ffff88803db0c618 (&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: 29689 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller-00209-g499551201b5f #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: 0033:0x7faf07b22137
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:00007ffd81adcd78 EFLAGS: 00000297 ORIG_RAX: 000000000000003e
RAX: ffffffffffffffda RBX: 000000000000011f RCX: 00007faf07b22137
RDX: 0000000000000648 RSI: 0000000000000009 RDI: 00000000fffffee1
RBP: 00007ffd81adcdac R08: 0000000035fe77c1 R09: 7fffffffffffffff
R10: 00007faf08a64038 R11: 0000000000000297 R12: 0000000000000064
R13: 00000000001853b9 R14: 00007ffd81adce00 R15: 000000000000005b
</TASK>
BUG: unable to handle page fault for address: fffffbfff378171b
#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: 29689 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller-00209-g499551201b5f #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:ffffc9000c05f5e0 EFLAGS: 00010086
RAX: 0000000000f2ce01 RBX: 1ffffffff378171b RCX: ffffffff817ac184
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9bc0b8d8
RBP: ffffffffffffffff R08: ffffffff9bc0b8df R09: 1ffffffff378171b
R10: dffffc0000000000 R11: fffffbfff378171b R12: ffff8880302b46c4
R13: ffff8880302b3c00 R14: dffffc0000000001 R15: fffffbfff378171c
FS: 000055555f6e1500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff378171b CR3: 0000000039da8000 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: 0033:0x7faf07b22137
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:00007ffd81adcd78 EFLAGS: 00000297 ORIG_RAX: 000000000000003e
RAX: ffffffffffffffda RBX: 000000000000011f RCX: 00007faf07b22137
RDX: 0000000000000648 RSI: 0000000000000009 RDI: 00000000fffffee1
RBP: 00007ffd81adcdac R08: 0000000035fe77c1 R09: 7fffffffffffffff
R10: 00007faf08a64038 R11: 0000000000000297 R12: 0000000000000064
R13: 00000000001853b9 R14: 00007ffd81adce00 R15: 000000000000005b
</TASK>
Modules linked in:
CR2: fffffbfff378171b
---[ 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:ffffc9000c05f5e0 EFLAGS: 00010086
RAX: 0000000000f2ce01 RBX: 1ffffffff378171b RCX: ffffffff817ac184
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9bc0b8d8
RBP: ffffffffffffffff R08: ffffffff9bc0b8df R09: 1ffffffff378171b
R10: dffffc0000000000 R11: fffffbfff378171b R12: ffff8880302b46c4
R13: ffff8880302b3c00 R14: dffffc0000000001 R15: fffffbfff378171c
FS: 000055555f6e1500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff378171b CR3: 0000000039da8000 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)