Oct 30 17:43:36 syzkaller daemon.err dhcpcd[5660]: libudev: received NULL device
Oct 30 17:43:36 syzkaller daemon.err dhcpcd[5660]: libudev: received NULL device
Oct 30 17:43:36 syzkaller daemon.err dhcpcd[5660]: libudev: received NULL device
Oct 30 17:43:3[ 261.176510][ C3] ------------[ cut here ]------------
6 syzkaller daem[ 261.180206][ C3] WARNING: CPU: 3 PID: 0 at net/mac80211/tx.c:5038 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5038 [inline]
6 syzkaller daem[ 261.180206][ C3] WARNING: CPU: 3 PID: 0 at net/mac80211/tx.c:5038 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline]
6 syzkaller daem[ 261.180206][ C3] WARNING: CPU: 3 PID: 0 at net/mac80211/tx.c:5038 __ieee80211_beacon_get+0x14ac/0x16b0 net/mac80211/tx.c:5467
on.err dhcpcd[5660]: libudev: re[ 261.183587][ C3] Modules linked in:
ceived NULL devi[ 261.183630][ C3] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
ce
Oct 30 17:43[ 261.183675][ C3] Code: 00 89 df 44 89 e6 e8 43 79 f2 f6 44 38 e3 72 a1 e8 19 78 f2 f6 48 89 ef e8 d1 42 49 f7 31 ed e9 9c fe ff ff e8 05 78 f2 f6 90 <0f> 0b 90 e9 86 f6 ff ff 48 89 c6 48 c7 c7 20 6d 2d 90 48 89 04 24
:36 syzkaller da[ 261.183695][ C3] RSP: 0018:ffffc90000908b88 EFLAGS: 00010246
emon.err dhcpcd[[ 261.207866][ C3] RDX: ffff88801dab2440 RSI: ffffffff8a9b047b RDI: 0000000000000001
5660]: libudev: [ 261.210356][ C3] RBP: ffffc90000908c38 R08: 0000000000000001 R09: 0000000000000000
Oct 30 17:43:36 [ 261.213020][ C3] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888027df4c00
syzkaller daemon[ 261.217781][ C3] FS: 0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
.err dhcpcd[5660[ 261.221066][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
]: libudev: rece[ 261.223464][ C3] CR2: 000055792776b028 CR3: 0000000032186000 CR4: 0000000000352ef0
ived NULL device[ 261.223475][ C3] DR0: 0000000000000000 DR1: 000000000000000a DR2: 0000000000000000
Oct 30 17:43:3[ 261.223490][ C3] Call Trace:
6 syzkaller daem[ 261.223495][ C3] <IRQ>
on.err dhcpcd[56[ 261.223536][ C3] ? __report_bug lib/bug.c:199 [inline]
on.err dhcpcd[56[ 261.223536][ C3] ? report_bug+0x3c0/0x580 lib/bug.c:219
60]: libudev: re[ 261.223564][ C3] ? exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:309
ceived NULL devi[ 261.223574][ C3] ? asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
ce
Oct 30 17:43[ 261.223606][ C3] ? __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5038 [inline]
Oct 30 17:43[ 261.223606][ C3] ? __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline]
Oct 30 17:43[ 261.223606][ C3] ? __ieee80211_beacon_get+0x14ab/0x16b0 net/mac80211/tx.c:5467
:36 syzkaller da[ 261.248479][ C3] ? __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5038 [inline]
:36 syzkaller da[ 261.248479][ C3] ? __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline]
:36 syzkaller da[ 261.248479][ C3] ? __ieee80211_beacon_get+0x14ac/0x16b0 net/mac80211/tx.c:5467
emon.err dhcpcd[[ 261.248552][ C3] ieee80211_beacon_get_tim+0xa7/0x280 net/mac80211/tx.c:5594
5660]: libudev: [ 261.257020][ C3] ieee80211_beacon_get include/net/mac80211.h:5607 [inline]
5660]: libudev: [ 261.257020][ C3] mac80211_hwsim_beacon_tx+0x4ea/0xa00 drivers/net/wireless/virtual/mac80211_hwsim.c:2311
received NULL de[ 261.259403][ C3] ? rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
received NULL de[ 261.259403][ C3] ? rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:737
vice
Oct 30 17:[ 261.261143][ C3] ? trace_lock_acquire+0x14a/0x1d0 include/trace/events/lock.h:24
43:36 syzkaller [ 261.261177][ C3] ? __pfx_mac80211_hwsim_beacon_tx+0x10/0x10 drivers/net/wireless/virtual/mac80211_hwsim.c:2254
daemon.err dhcpc[ 261.268131][ C3] ? __pfx_mac80211_hwsim_beacon+0x10/0x10 drivers/net/wireless/virtual/mac80211_hwsim.c:3161
d[5660]: libudev[ 261.270390][ C3] ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:810
: received NULL [ 261.273431][ C3] mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
device
Oct 30 1[ 261.273508][ C3] ? __pfx___hrtimer_run_queues+0x10/0x10 kernel/time/hrtimer.c:650
7:43:36 syzkaller daemon.err dhc[ 261.279142][ C3] ? ktime_get_update_offsets_now+0x201/0x310 kernel/time/timekeeping.c:2465
pcd[5660]: libud[ 261.281860][ C3] hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
ev: received NUL[ 261.281907][ C3] ? __pfx_handle_softirqs+0x10/0x10 include/trace/events/irq.h:142
L device
Oct 30[ 261.288599][ C3] instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
Oct 30[ 261.288599][ C3] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
17:43:36 syzkal[ 261.291551][ C3] <TASK>
ler daemon.err d[ 261.292990][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
hcpcd[5660]: lib[ 261.295430][ C3] RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
hcpcd[5660]: lib[ 261.295430][ C3] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
hcpcd[5660]: lib[ 261.295430][ C3] RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:743
udev: received N[ 261.302680][ C3] RSP: 0018:ffffc900001a7e08 EFLAGS: 00000202
ULL device
Oct [ 261.308915][ C3] RBP: ffffed1003b56488 R08: 0000000000000001 R09: ffffed100d527025
30 17:43:36 syzk[ 261.311500][ C3] R10: ffff88806a93812b R11: 0000000000000000 R12: 0000000000000003
aller daemon.err[ 261.314814][ C3] R13: ffff88801dab2440 R14: ffffffff905f5208 R15: 0000000000000000
dhcpcd[5660]: l[ 261.314855][ C3] default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117
ibudev: received[ 261.314883][ C3] ? __pfx_do_idle+0x10/0x10 kernel/sched/idle.c:82
NULL device
Oc[ 261.314915][ C3] start_secondary+0x222/0x2b0 arch/x86/kernel/smpboot.c:314
t 30 17:43:36 sy[ 261.326571][ C3] ? __pfx_start_secondary+0x10/0x10 arch/x86/include/asm/smp.h:147
zkall[e r 2d6ae1m.o3n2.8e441][ C3] common_startup_64+0x13e/0x148