------------[ cut here ]------------
WARNING: CPU: 0 PID: 4206 at net/mac80211/tx.c:4883 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4883 [inline]
WARNING: CPU: 0 PID: 4206 at net/mac80211/tx.c:4883 __ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5107
Modules linked in:
CPU: 0 PID: 4206 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4883 [inline]
RIP: 0010:__ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5107
Code: 1d f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 12 8f 1d f8 0f 0b e9 16 ef ff ff e8 06 8f 1d f8 <0f> 0b e9 7c f2 ff ff e8 ba ec 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078c0 EFLAGS: 00010246
RAX: ffffffff895b9e8a RBX: ffff8880787eb200 RCX: ffff88807aa9d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007af8 R08: ffff88807aa9d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: f8f8f8f8f8f8f8f8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28
FS:  00007f20ad560880(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3291bff8 CR3: 00000000258ec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5226
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0x104/0x900 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4ea/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:thp_contains+0x1/0x360 include/linux/pagemap.h:448
Code: 00 00 00 00 00 fc ff df e9 8f fd ff ff 89 d9 80 e1 07 80 c1 03 38 c1 7c 8f 48 89 df e8 38 9a 1f 00 eb 85 66 0f 1f 44 00 00 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 10 49 89 f7 49 89 fe 48 bb 00
RSP: 0018:ffffc90002f5f770 EFLAGS: 00000246
RAX: 0000000000008000 RBX: 0000000000000000 RCX: ffff88807aa9d940
RDX: 0000000000000000 RSI: 0000000000000625 RDI: ffffea000155ff40
RBP: ffffc90002f5f8b0 R08: ffffea000155ff47 R09: 1ffffd40002abfe8
R10: dffffc0000000000 R11: fffff940002abfe9 R12: ffffc90002f5f800
R13: fffffffffffffffe R14: ffffea000155ff40 R15: dffffc0000000000
 find_lock_entries+0x932/0xd70 mm/filemap.c:2106
 shmem_undo_range+0x292/0x19a0 mm/shmem.c:943
 shmem_truncate_range mm/shmem.c:1063 [inline]
 shmem_evict_inode+0x1e2/0x9a0 mm/shmem.c:1145
 evict+0x4b2/0x9d0 fs/inode.c:644
 __dentry_kill+0x412/0x630 fs/dcache.c:586
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xd8/0x1a0 fs/dcache.c:893
 __fput+0x5a5/0x8c0 fs/file_table.c:319
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:184
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:217
 __syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:310
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f20ad64e407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd4534b620 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007f20ad560880 RCX: 00007f20ad64e407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007f20ad5606e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 000055af151e4410 R14: 0000000000000008 R15: 000055af151ef4d0
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 fc                	add    %bh,%ah
   6:	ff                   	lcall  (bad)
   7:	df e9                	fucomip %st(1),%st
   9:	8f                   	(bad)
   a:	fd                   	std
   b:	ff                   	(bad)
   c:	ff 89 d9 80 e1 07    	decl   0x7e180d9(%rcx)
  12:	80 c1 03             	add    $0x3,%cl
  15:	38 c1                	cmp    %al,%cl
  17:	7c 8f                	jl     0xffffffa8
  19:	48 89 df             	mov    %rbx,%rdi
  1c:	e8 38 9a 1f 00       	call   0x1f9a59
  21:	eb 85                	jmp    0xffffffa8
  23:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  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:	48 83 ec 10          	sub    $0x10,%rsp
  37:	49 89 f7             	mov    %rsi,%r15
  3a:	49 89 fe             	mov    %rdi,%r14
  3d:	48                   	rex.W
  3e:	bb                   	.byte 0xbb