=============================
[ BUG: Invalid wait context ]
6.14.0-rc5-syzkaller #0 Not tainted
-----------------------------
kworker/0:2/904 is trying to lock:
ffff8880b873e958 (&ping_table.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 kworker/0:2/904:
#0: ffff88801b079d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b079d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc900037f7c60 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900037f7c60 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffffffff8eb3e558 (&rcu_state.expedited_wq){-.-.}-{2:2}, at: swake_up_one+0x20/0x160 kernel/sched/swait.c:51
#3: ffff88801d2c4628 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
#3: ffff88801d2c4628 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xc2/0x1470 kernel/sched/core.c:4214
stack backtrace:
CPU: 0 UID: 0 PID: 904 Comm: kworker/0:2 Not tainted 6.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_power_efficient gc_worker
Call Trace:
__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:4828 [inline]
check_wait_context kernel/locking/lockdep.c:4900 [inline]
__lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
rq_lock kernel/sched/sched.h:1852 [inline]
ttwu_queue kernel/sched/core.c:4000 [inline]
try_to_wake_up+0x7e2/0x1470 kernel/sched/core.c:4330
swake_up_locked kernel/sched/swait.c:29 [inline]
swake_up_one+0x70/0x160 kernel/sched/swait.c:52
rcu_report_exp_rnp kernel/rcu/tree_exp.h:225 [inline]
rcu_preempt_deferred_qs_irqrestore+0x8e5/0xca0 kernel/rcu/tree_plugin.h:579
rcu_read_unlock_special+0x497/0x570 kernel/rcu/tree_plugin.h:693
__rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:438
rcu_read_unlock include/linux/rcupdate.h:882 [inline]
gc_worker+0xcad/0x1400 net/netfilter/nf_conntrack_core.c:1603
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
BUG: unable to handle page fault for address: fffffbfff3598930
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 13fff1067 PTE 0
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 904 Comm: kworker/0:2 Not tainted 6.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_power_efficient gc_worker
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:ffffc900037f72e0 EFLAGS: 00010086
RAX: 0000000000cef601 RBX: 1ffffffff3598930 RCX: ffffffff819cc4e4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9acc4980
RBP: ffffffffffffffff R08: ffffffff9acc4987 R09: 1ffffffff3598930
R10: dffffc0000000000 R11: fffffbfff3598930 R12: ffff888025be0ad4
R13: ffff888025be0000 R14: dffffc0000000001 R15: fffffbfff3598931
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff3598930 CR3: 000000002f0ca000 CR4: 0000000000350ef0
Call Trace:
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:5198
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
rq_lock kernel/sched/sched.h:1852 [inline]
ttwu_queue kernel/sched/core.c:4000 [inline]
try_to_wake_up+0x7e2/0x1470 kernel/sched/core.c:4330
swake_up_locked kernel/sched/swait.c:29 [inline]
swake_up_one+0x70/0x160 kernel/sched/swait.c:52
rcu_report_exp_rnp kernel/rcu/tree_exp.h:225 [inline]
rcu_preempt_deferred_qs_irqrestore+0x8e5/0xca0 kernel/rcu/tree_plugin.h:579
rcu_read_unlock_special+0x497/0x570 kernel/rcu/tree_plugin.h:693
__rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:438
rcu_read_unlock include/linux/rcupdate.h:882 [inline]
gc_worker+0xcad/0x1400 net/netfilter/nf_conntrack_core.c:1603
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CR2: fffffbfff3598930
---[ 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:ffffc900037f72e0 EFLAGS: 00010086
RAX: 0000000000cef601 RBX: 1ffffffff3598930 RCX: ffffffff819cc4e4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9acc4980
RBP: ffffffffffffffff R08: ffffffff9acc4987 R09: 1ffffffff3598930
R10: dffffc0000000000 R11: fffffbfff3598930 R12: ffff888025be0ad4
R13: ffff888025be0000 R14: dffffc0000000001 R15: fffffbfff3598931
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff3598930 CR3: 000000002f0ca000 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)