------------[ cut here ]------------
WARNING: CPU: 1 PID: 5128 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 5128 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 5128 Comm: syz.1.291 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Code: f8 0f 0b e9 f1 fa ff ff e8 f1 c2 41 f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 e0 c2 41 f8 0f 0b e9 3c ef ff ff e8 d4 c2 41 f8 <0f> 0b e9 b8 f2 ff ff e8 f8 dd 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff8936093c RBX: ffff88805f20cc80 RCX: ffff888022cf0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0ae8 R08: ffff888022cf0000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888077f64800
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000631c1000 CR4: 00000000003506e0
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+0x53d/0xc40 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 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:kasan_mem_to_shadow include/linux/kasan.h:55 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x41/0x290 mm/kasan/generic.c:189
Code: 82 57 02 00 00 49 89 f8 49 c1 e8 2f 41 81 f8 ff ff 01 00 0f 82 43 02 00 00 49 bf 01 00 00 00 00 fc ff df 49 89 fb 49 c1 eb 03 <49> b8 00 00 00 00 00 fc ff df 4f 8d 0c 03 48 8d 5c 37 ff 48 c1 eb
RSP: 0018:ffffc9000334f428 EFLAGS: 00000a02
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81b347dd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6935a8
RBP: 0000000000000000 R08: 000000000001ffff R09: ffffed100a54b600
R10: fffffbfff2c6dc4f R11: 1ffffffff1ad26b5 R12: dffffc0000000000
R13: 1ffffd40002952d1 R14: 0000000000052a5a R15: dffffc0000000001
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
cpumask_test_cpu include/linux/cpumask.h:344 [inline]
cpu_online include/linux/cpumask.h:895 [inline]
trace_mm_page_free+0x2d/0x110 include/trace/events/kmem.h:160
free_pages_prepare mm/page_alloc.c:1292 [inline]
free_pcp_prepare mm/page_alloc.c:1391 [inline]
free_unref_page_prepare+0x52/0x6c0 mm/page_alloc.c:3317
free_unref_page_list+0x122/0x7e0 mm/page_alloc.c:3433
release_pages+0x184b/0x1bb0 mm/swap.c:963
__pagevec_release+0x6d/0xe0 mm/swap.c:983
pagevec_release include/linux/pagevec.h:81 [inline]
shmem_undo_range+0x5cb/0x1880 mm/shmem.c:964
shmem_truncate_range mm/shmem.c:1063 [inline]
shmem_evict_inode+0x20d/0xa00 mm/shmem.c:1145
evict+0x485/0x870 fs/inode.c:647
__dentry_kill+0x431/0x650 fs/dcache.c:586
dentry_kill+0xb8/0x290 fs/dcache.c:-1
dput+0xd8/0x1a0 fs/dcache.c:893
__fput+0x5ee/0x930 fs/file_table.c:319
task_work_run+0x125/0x1a0 kernel/task_work.c:188
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0x61e/0x20a0 kernel/exit.c:883
do_group_exit+0x12e/0x300 kernel/exit.c:997
__do_sys_exit_group kernel/exit.c:1008 [inline]
__se_sys_exit_group kernel/exit.c:1006 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
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: 0033:0x7f77bee01749
Code: Unable to access opcode bytes at RIP 0x7f77bee0171f.
RSP: 002b:00007ffcbd95a9b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f77bee01749
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffcbd95aa1c R08: 00000005bd95aaaf R09: 0000000000000051
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000003e
R13: 0000000000000051 R14: 0000000000023578 R15: 00007ffcbd95aa70
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 57 push %rdi
1: 02 00 add (%rax),%al
3: 00 49 89 add %cl,-0x77(%rcx)
6: f8 clc
7: 49 c1 e8 2f shr $0x2f,%r8
b: 41 81 f8 ff ff 01 00 cmp $0x1ffff,%r8d
12: 0f 82 43 02 00 00 jb 0x25b
18: 49 bf 01 00 00 00 00 movabs $0xdffffc0000000001,%r15
1f: fc ff df
22: 49 89 fb mov %rdi,%r11
25: 49 c1 eb 03 shr $0x3,%r11
* 29: 49 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%r8 <-- trapping instruction
30: fc ff df
33: 4f 8d 0c 03 lea (%r11,%r8,1),%r9
37: 48 8d 5c 37 ff lea -0x1(%rdi,%rsi,1),%rbx
3c: 48 rex.W
3d: c1 .byte 0xc1
3e: eb .byte 0xeb