------------[ cut here ]------------
WARNING: CPU: 0 PID: 5253 at net/mac80211/tx.c:4861 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
WARNING: CPU: 0 PID: 5253 at net/mac80211/tx.c:4861 __ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5085
Modules linked in:
CPU: 0 PID: 5253 Comm: syz.4.216 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
RIP: 0010:__ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5085
Code: 27 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 22 4d 27 f8 0f 0b e9 16 ef ff ff e8 16 4d 27 f8 <0f> 0b e9 7c f2 ff ff e8 da 70 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078c0 EFLAGS: 00010246
RAX: ffffffff8951a58a RBX: ffff88806341aa00 RCX: ffff88802a91bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007af8 R08: ffff88802a91bb80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: f8f8f8f8f8f8f8f8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28
FS: 00007f62532526c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81cf2f8796 CR3: 000000001fa88000 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:5204
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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:try_charge_memcg+0x267/0x15b0 mm/memcontrol.c:2607
Code: 8f 84 24 10 01 00 00 f7 84 24 10 01 00 00 00 02 00 00 c6 44 01 0e f8 0f 85 d5 02 00 00 41 f7 c7 00 02 00 00 74 01 fb 45 84 f6 <49> bf 00 00 00 00 00 fc ff df 0f 85 87 10 00 00 e9 3c 03 00 00 48
RSP: 0018:ffffc9000356ea60 EFLAGS: 00000202
RAX: dffffc0000000000 RBX: ffff88807dd38000 RCX: 1ffff920006add60
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a2a40
RBP: ffffc9000356ec50 R08: ffffffff901e915f R09: 1ffffffff203d22b
R10: dffffc0000000000 R11: fffffbfff203d22c R12: 0000000000000cc0
R13: 0000000000000002 R14: ffff8880b9036401 R15: 0000000000000287
try_charge mm/memcontrol.c:2779 [inline]
charge_memcg+0x100/0x300 mm/memcontrol.c:6765
__mem_cgroup_charge+0x21/0x80 mm/memcontrol.c:6801
mem_cgroup_charge include/linux/memcontrol.h:700 [inline]
shmem_add_to_page_cache+0xa8a/0x14d0 mm/shmem.c:718
shmem_getpage_gfp+0x1735/0x2c10 mm/shmem.c:1940
shmem_getpage mm/shmem.c:151 [inline]
shmem_write_begin+0xcd/0x1a0 mm/shmem.c:2474
generic_perform_write+0x2b6/0x550 mm/filemap.c:3785
__generic_file_write_iter+0x261/0x4e0 mm/filemap.c:3912
generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
__kernel_write+0x522/0x980 fs/read_write.c:539
__dump_emit+0x258/0x380 fs/coredump.c:943
dump_user_range+0x84/0x340 fs/coredump.c:1017
elf_core_dump+0x2fe0/0x3530 fs/binfmt_elf.c:2285
do_coredump+0x14e8/0x2a40 fs/coredump.c:894
get_signal+0x531/0x12e0 kernel/signal.c:2887
arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:320
exc_page_fault+0x88/0x100 arch/x86/mm/fault.c:1499
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7f6254ff9e61
Code: 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 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:fffffffffffffe70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f6255281fa0 RCX: 00007f6254ff9e59
RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000
RBP: 00007f625508fe6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f6255282038 R14: 00007f6255281fa0 R15: 00007ffc5141f5b8
----------------
Code disassembly (best guess):
0: 8f 84 24 10 01 00 00 pop 0x110(%rsp)
7: f7 84 24 10 01 00 00 testl $0x200,0x110(%rsp)
e: 00 02 00 00
12: c6 44 01 0e f8 movb $0xf8,0xe(%rcx,%rax,1)
17: 0f 85 d5 02 00 00 jne 0x2f2
1d: 41 f7 c7 00 02 00 00 test $0x200,%r15d
24: 74 01 je 0x27
26: fb sti
27: 45 84 f6 test %r14b,%r14b
* 2a: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 <-- trapping instruction
31: fc ff df
34: 0f 85 87 10 00 00 jne 0x10c1
3a: e9 3c 03 00 00 jmp 0x37b
3f: 48 rex.W