------------[ cut here ]------------
WARNING: CPU: 0 PID: 4177 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 0 PID: 4177 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 0 PID: 4177 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a 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 6d 14 2a f8 0f 0b e9 03 ef ff ff e8 61 14 2a f8 <0f> 0b e9 76 f2 ff ff e8 65 a9 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078e0 EFLAGS: 00010246
RAX: ffffffff894f202f RBX: ffff8880410ae268 RCX: ffff888072d93b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b08 R08: ffff888072d93b80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88801fc6f000
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f2c
FS: 000055557cb05500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff3e44de58 CR3: 000000002a42c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202
ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
__iterate_interfaces+0x243/0x500 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+0x4f2/0xb70 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x339/0x830 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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6799
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 b5 5d 8d f7 e8 60 4d ba f7 fb bf 01 00 00 00 65 b5 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc90002f7f3a0 EFLAGS: 00000286
RAX: 3b5ac585326b1c00 RBX: 0000000000000000 RCX: 3b5ac585326b1c00
RDX: dffffc0000000000 RSI: ffffffff8a2b2800 RDI: 0000000000000001
RBP: ffffc90002f7f440 R08: ffffffff8d89f02f R09: 1ffffffff1b13e05
R10: dffffc0000000000 R11: fffffbfff1b13e06 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005efe74
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:lock_release+0x5a4/0x8a0 kernel/locking/lockdep.c:5647
Code: 80 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 2c 04 f8 75 6f 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 43 c7 44 2c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90002f7f500 EFLAGS: 00000206
RAX: 0000000000000001 RBX: ffffffffffffffff RCX: 3b5ac585326b1c00
RDX: 0000000000000000 RSI: ffffffff8a2b3aa0 RDI: ffffffff8a79fe00
RBP: ffffc90002f7f608 R08: ffffffff8d89f02f R09: 1ffffffff1b13e05
R10: dffffc0000000000 R11: fffffbfff1b13e06 R12: 1ffff920005efeac
R13: dffffc0000000000 R14: ffff888072d94660 R15: 0000000000000246
rcu_read_unlock include/linux/rcupdate.h:773 [inline]
pfn_valid include/linux/mmzone.h:-1 [inline]
__virt_addr_valid+0x3bd/0x470 arch/x86/mm/physaddr.c:65
free_pages+0x12/0x50 mm/page_alloc.c:5587
poll_freewait+0x1ab/0x210 fs/select.c:155
do_select+0x16d4/0x1790 fs/select.c:611
core_sys_select+0x6fe/0x930 fs/select.c:680
do_pselect fs/select.c:762 [inline]
__do_sys_pselect6 fs/select.c:803 [inline]
__se_sys_pselect6+0x2f4/0x3c0 fs/select.c:794
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb1b6d4bf57
Code: 48 89 fa 4c 89 df e8 a8 56 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:00007ffd875841b0 EFLAGS: 00000202 ORIG_RAX: 000000000000010e
RAX: ffffffffffffffda RBX: 000055557cb05500 RCX: 00007fb1b6d4bf57
RDX: 0000000000000000 RSI: 00007ffd875842d0 RDI: 0000000000000025
RBP: 00007ffd87584730 R08: 00007ffd875841f0 R09: 00007ffd87584200
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd87584570
R13: 00007ffd87584360 R14: 585858582e7a7973 R15: 00007ffd875847a0
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 43 c6 44 37 04 f8 movb $0xf8,0x4(%r15,%r14,1)
8: 74 0b je 0x15
a: 0f 0b ud2
c: 48 f7 03 08 00 00 00 testq $0x8,(%rbx)
13: 74 7f je 0x94
15: bf 01 00 00 00 mov $0x1,%edi
1a: e8 b5 5d 8d f7 call 0xf78d5dd4
1f: e8 60 4d ba f7 call 0xf7ba4d84
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 65 b5 ff ff call 0xffffb594 <-- trapping instruction
2f: 43 c6 44 37 08 00 movb $0x0,0x8(%r15,%r14,1)
35: 48 c7 44 24 40 00 00 movq $0x0,0x40(%rsp)
3c: 00 00
3e: 9c pushf
3f: 8f .byte 0x8f