------------[ cut here ]------------
WARNING: CPU: 1 PID: 6163 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 1 PID: 6163 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 1 PID: 6163 Comm: syz.3.101 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 9e cc d3 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 c9 a3 96 f7 0f 0b e9 f6 f7 ff ff e8 bd a3 96 f7 <0f> 0b e9 48 fb ff ff e8 b1 a3 96 f7 48 c7 c7 60 07 24 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff89eeebd3 RBX: ffffffff89eed9d6 RCX: ffff888027cd8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888027cd8000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805c09e3c0
R13: dffffc0000000000 R14: ffff88805c09e8b0 R15: ffff888025494024
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e581e7dac CR3: 0000000061f01000 CR4: 00000000003506e0
Call Trace:
ieee80211_beacon_get_tim+0xb8/0x560 net/mac80211/tx.c:5569
ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
__run_hrtimer kernel/time/hrtimer.c:1750 [inline]
__hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1814
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:444 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x55/0xb0 kernel/rcu/tree.c:700
Code: 3a 7d 8c 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 4c 51 6d 00 48 c7 c3 28 6b 03 00 49 03 1e 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 2f 8b 03 65 ff 0d 11 1e 94 7e 74 0c 83 e0
RSP: 0018:ffffc9000b8573f8 EFLAGS: 00000a06
RAX: 1ffff110171e6d65 RBX: ffff8880b8f36b28 RCX: e02f26ddefe74900
RDX: 0000000000000000 RSI: ffffffff8afc6ae0 RDI: ffffffff8afc6aa0
RBP: 0000000000000001 R08: dffffc0000000000 R09: 1ffffffff21b50a0
R10: dffffc0000000000 R11: fffffbfff21b50a1 R12: dffffc0000000000
R13: 00000000000001a0 R14: ffffffff8c7d3a38 R15: dffffc0000000000
rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
rcu_read_lock_held+0x15/0x40 kernel/rcu/update.c:348
lookup_page_ext mm/page_ext.c:240 [inline]
page_ext_get+0x193/0x2b0 mm/page_ext.c:509
page_table_check_clear+0x4a/0x6a0 mm/page_table_check.c:74
ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
zap_pte_range mm/memory.c:1428 [inline]
zap_pmd_range mm/memory.c:1570 [inline]
zap_pud_range mm/memory.c:1599 [inline]
zap_p4d_range mm/memory.c:1620 [inline]
unmap_page_range+0x1ad1/0x2fe0 mm/memory.c:1641
unmap_vmas+0x25e/0x3a0 mm/memory.c:1731
exit_mmap+0x200/0xb50 mm/mmap.c:3302
__mmput+0x118/0x3c0 kernel/fork.c:1355
exit_mm+0x1da/0x2c0 kernel/exit.c:569
do_exit+0x88e/0x23c0 kernel/exit.c:870
do_group_exit+0x21b/0x2d0 kernel/exit.c:1024
get_signal+0x12fc/0x1400 kernel/signal.c:2902
arch_do_signal_or_restart+0x9c/0x7b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3c0218f6c9
Code: Unable to access opcode bytes at 0x7f3c0218f69f.
RSP: 002b:00007f3c030ac0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3c023e5fa8 RCX: 00007f3c0218f6c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3c023e5fa8
RBP: 00007f3c023e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3c023e6038 R14: 00007ffe53a6e410 R15: 00007ffe53a6e4f8
----------------
Code disassembly (best guess):
0: 3a 7d 8c cmp -0x74(%rbp),%bh
3: 4c 89 f0 mov %r14,%rax
6: 48 c1 e8 03 shr $0x3,%rax
a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
f: 74 08 je 0x19
11: 4c 89 f7 mov %r14,%rdi
14: e8 4c 51 6d 00 call 0x6d5165
19: 48 c7 c3 28 6b 03 00 mov $0x36b28,%rbx
20: 49 03 1e add (%r14),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 75 2f jne 0x62
33: 8b 03 mov (%rbx),%eax
35: 65 ff 0d 11 1e 94 7e decl %gs:0x7e941e11(%rip) # 0x7e941e4d
3c: 74 0c je 0x4a
3e: 83 .byte 0x83
3f: e0 .byte 0xe0