------------[ cut here ]------------
WARNING: CPU: 0 PID: 15882 at net/mac80211/tx.c:4946 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4946 [inline]
WARNING: CPU: 0 PID: 15882 at net/mac80211/tx.c:4946 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5347
Modules linked in:
CPU: 0 PID: 15882 Comm: syz.0.1971 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4946 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5347
Code: f7 4c 89 ef e8 00 21 07 f8 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 2b 83 ce f7 0f 0b e9 61 f8 ff ff e8 1f 83 ce f7 <0f> 0b e9 85 fb ff ff e8 13 83 ce f7 48 c7 c7 20 02 fc 8d 4c 89 e6
RSP: 0018:ffffc90000007a48 EFLAGS: 00010246
RAX: ffffffff89b39e81 RBX: dffffc0000000000 RCX: ffff888053cbda00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888053cbda00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807c9de228
R13: ffff8880586d1c24 R14: ffff88807c9de760 R15: ffff8880586d1c00
FS: 00007fed817eb6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3023f5 CR3: 0000000072f44000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5474
ieee80211_beacon_get include/net/mac80211.h:5335 [inline]
mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
__iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:788
ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
__run_hrtimer kernel/time/hrtimer.c:1751 [inline]
__hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
handle_softirqs+0x291/0x910 kernel/softirq.c:596
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x267/0x8e0 kernel/sched/core.c:5124
Code: d6 08 85 c0 0f 84 38 01 00 00 48 85 db 0f 85 57 01 00 00 e9 e7 04 00 00 4c 89 e7 e8 d3 e3 e0 08 e8 8e 04 2f 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc900034b6d40 EFLAGS: 00000286
RAX: aade230e2bc9b300 RBX: 0000000000000000 RCX: aade230e2bc9b300
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: ffffc900034b6d90 R08: ffffffff90b10357 R09: 1ffffffff216206a
R10: dffffc0000000000 R11: fffffbfff216206b R12: ffff888053cbda00
R13: ffff8880b8e3ba48 R14: dffffc0000000000 R15: ffff8880b8e3b7d0
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x1087/0x4030 kernel/sched/core.c:6562
preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6874
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:arch_stack_walk+0x113/0x140 arch/x86/kernel/stacktrace.c:24
Code: ff 4c 89 ff e8 3e 9b 08 00 48 85 c0 74 1e 48 89 df 48 89 c6 41 ff d6 84 c0 74 11 4c 89 ff e8 44 9c 08 00 83 bd 78 ff ff ff 00 <75> d5 65 48 8b 04 25 28 00 00 00 48 3b 45 d8 75 0d 48 83 c4 68 5b
RSP: 0018:ffffc900034b70a8 EFLAGS: 00000202
RAX: 0000000080000001 RBX: ffffc900034b7160 RCX: 0000000080000000
RDX: 1ffffffff1e78300 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc900034b7130 R08: 0000000000000004 R09: 000000000000000e
R10: dffffc0000000000 R11: fffff52000696e21 R12: ffff888053cbda00
R13: ffff888140009780 R14: ffffffff8170d2e0 R15: ffffc900034b70a8
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x4b/0x490 mm/slab.h:737
slab_alloc_node mm/slub.c:3359 [inline]
slab_alloc mm/slub.c:3367 [inline]
__kmem_cache_alloc_lru mm/slub.c:3374 [inline]
kmem_cache_alloc_lru+0x182/0x2e0 mm/slub.c:3390
__d_alloc+0x2e/0x6e0 fs/dcache.c:1774
d_alloc fs/dcache.c:1854 [inline]
d_alloc_parallel+0xdc/0x1590 fs/dcache.c:2647
__lookup_slow+0x134/0x3f0 fs/namei.c:1683
lookup_one+0x19a/0x2d0 fs/namei.c:2778
ovl_check_whiteouts fs/overlayfs/readdir.c:281 [inline]
ovl_dir_read+0x43a/0x560 fs/overlayfs/readdir.c:315
ovl_dir_read_merged+0x162/0x340 fs/overlayfs/readdir.c:362
ovl_cache_get fs/overlayfs/readdir.c:414 [inline]
ovl_iterate+0x10a1/0x1fb0 fs/overlayfs/readdir.c:764
iterate_dir+0x213/0x550 fs/readdir.c:-1
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64+0xf2/0x270 fs/readdir.c:354
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fed8099de59
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:00007fed817eb028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fed80c26180 RCX: 00007fed8099de59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007fed80a33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fed80c26218 R14: 00007fed80c26180 R15: 00007fffef326698
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 08 85 c0 0f 84 38 or %al,0x38840fc0(%rbp)
6: 01 00 add %eax,(%rax)
8: 00 48 85 add %cl,-0x7b(%rax)
b: db 0f fisttpl (%rdi)
d: 85 57 01 test %edx,0x1(%rdi)
10: 00 00 add %al,(%rax)
12: e9 e7 04 00 00 jmp 0x4fe
17: 4c 89 e7 mov %r12,%rdi
1a: e8 d3 e3 e0 08 call 0x8e0e3f2
1f: e8 8e 04 2f 00 call 0x2f04b2
24: fb sti
25: 4c 8b 65 b8 mov -0x48(%rbp),%r12
* 29: 49 8d bc 24 f8 15 00 lea 0x15f8(%r12),%rdi <-- trapping instruction
30: 00
31: 48 89 f8 mov %rdi,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
3d: 84 c0 test %al,%al