netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
WARNING: CPU: 1 PID: 20665 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
WARNING: CPU: 1 PID: 20665 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
WARNING: CPU: 1 PID: 20665 at net/mac80211/tx.c:4154 __ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 20665 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4
RSP: 0018:ffff8880ba107c18 EFLAGS: 00010206
RAX: ffff8880a9832540 RBX: ffff88805a2af1b8 RCX: ffffffff87a2e6ba
RDX: 0000000000000100 RSI: ffffffff87a2e6c8 RDI: 0000000000000001
RBP: ffff88805a3b19c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880a5952d00 R14: 0000000000000000 R15: ffff8880ba107d60
ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463
ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
__iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
__tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911
Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b
RSP: 0018:ffff888057e57c30 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a9832540 RCX: 0000000000005a24
RDX: dffffc0000000000 RSI: 00000000d6b902e1 RDI: 0000000000000286
RBP: ffff8880534061c8 R08: ffffffff8cd44660 R09: 0000000000000000
R10: ffff8880a9832dc8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
__might_fault mm/memory.c:4772 [inline]
__might_fault+0x152/0x1d0 mm/memory.c:4757
__sys_recvmmsg+0x281/0x6d0 net/socket.c:2507
do_sys_recvmmsg+0x172/0x190 net/socket.c:2577
__do_sys_recvmmsg net/socket.c:2595 [inline]
__se_sys_recvmmsg net/socket.c:2591 [inline]
__x64_sys_recvmmsg+0xba/0x150 net/socket.c:2591
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f6365b940c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f63640e5168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f6365cb4050 RCX: 00007f6365b940c9
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
RDX: 00000000040001b7 RSI: 0000000020007840 RDI: 0000000000000003
RBP: 00007f6365befae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc1df7d8f R14: 00007f63640e5300 R15: 0000000000022000
Kernel Offset: disabled
================================
WARNING: inconsistent lock state
4.19.211-syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-R} usage.
syz-executor.5/20665 [HC0[0]:SC1[1]:HE0:SE0] takes:
000000000c91537c ((fb_notifier_list).rwsem){+++?}, at: __blocking_notifier_call_chain kernel/notifier.c:316 [inline]
000000000c91537c ((fb_notifier_list).rwsem){+++?}, at: __blocking_notifier_call_chain kernel/notifier.c:304 [inline]
000000000c91537c ((fb_notifier_list).rwsem){+++?}, at: blocking_notifier_call_chain kernel/notifier.c:328 [inline]
000000000c91537c ((fb_notifier_list).rwsem){+++?}, at: blocking_notifier_call_chain+0x6f/0xa0 kernel/notifier.c:325
{SOFTIRQ-ON-W} state was registered at:
down_write+0x34/0x90 kernel/locking/rwsem.c:70
blocking_notifier_chain_register+0x78/0x350 kernel/notifier.c:226
fb_console_init+0x1c/0x305 drivers/video/fbdev/core/fbcon.c:3432
fbmem_init+0x105/0x126 drivers/video/fbdev/core/fbmem.c:1932
do_one_initcall+0xf1/0x740 init/main.c:884
do_initcall_level init/main.c:952 [inline]
do_initcalls init/main.c:960 [inline]
do_basic_setup init/main.c:978 [inline]
kernel_init_freeable+0x9c5/0xab7 init/main.c:1145
kernel_init+0xd/0x1ba init/main.c:1062
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
irq event stamp: 111683
hardirqs last enabled at (111682): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last enabled at (111682): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184
hardirqs last disabled at (111683): [] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (108636): [] __do_softirq+0x678/0x980 kernel/softirq.c:318
softirqs last disabled at (111591): [] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (111591): [] irq_exit+0x215/0x260 kernel/softirq.c:412
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock((fb_notifier_list).rwsem);
lock((fb_notifier_list).rwsem);
*** DEADLOCK ***
3 locks held by syz-executor.5/20665:
#0: 000000004b70b4d1 (&mm->mmap_sem){++++}, at: __might_fault+0xef/0x1d0 mm/memory.c:4771
#1: 00000000d1f22d0c (rcu_read_lock){....}, at: ieee80211_iterate_active_interfaces_atomic+0x0/0x170 net/mac80211/util.c:637
#2: 00000000d1f22d0c (rcu_read_lock){....}, at: __ieee80211_beacon_get+0x0/0x1a30 include/linux/compiler.h:263
stack backtrace:
CPU: 1 PID: 20665 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
print_usage_bug.cold+0x42e/0x570 kernel/locking/lockdep.c:2545
valid_state kernel/locking/lockdep.c:2558 [inline]
mark_lock_irq kernel/locking/lockdep.c:2752 [inline]
mark_lock+0xc70/0x1160 kernel/locking/lockdep.c:3132
mark_irqflags kernel/locking/lockdep.c:3002 [inline]
__lock_acquire+0x10ed/0x3ff0 kernel/locking/lockdep.c:3373
lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
down_read+0x36/0x80 kernel/locking/rwsem.c:24
__blocking_notifier_call_chain kernel/notifier.c:316 [inline]
__blocking_notifier_call_chain kernel/notifier.c:304 [inline]
blocking_notifier_call_chain kernel/notifier.c:328 [inline]
blocking_notifier_call_chain+0x6f/0xa0 kernel/notifier.c:325
fb_blank+0xb5/0x1d0 drivers/video/fbdev/core/fbmem.c:1074
fbcon_blank+0x932/0xec0 drivers/video/fbdev/core/fbcon.c:2221
do_unblank_screen+0x241/0x610 drivers/tty/vt/vt.c:4294
panic+0x313/0x50e kernel/panic.c:239
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4
RSP: 0018:ffff8880ba107c18 EFLAGS: 00010206
RAX: ffff8880a9832540 RBX: ffff88805a2af1b8 RCX: ffffffff87a2e6ba
RDX: 0000000000000100 RSI: ffffffff87a2e6c8 RDI: 0000000000000001
RBP: ffff88805a3b19c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880a5952d00 R14: 0000000000000000 R15: ffff8880ba107d60
ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463
ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
__iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
__tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911
Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b
RSP: 0018:ffff888057e57c30 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a9832540 RCX: 0000000000005a24
RDX: dffffc0000000000 RSI: 00000000d6b902e1 RDI: 0000000000000286
RBP: ffff8880534061c8 R08: ffffffff8cd44660 R09: 0000000000000000
R10: ffff8880a9832dc8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
__might_fault mm/memory.c:4772 [inline]
__might_fault+0x152/0x1d0 mm/memory.c:4757
__sys_recvmmsg+0x281/0x6d0 net/socket.c:2507
do_sys_recvmmsg+0x172/0x190 net/socket.c:2577
__do_sys_recvmmsg net/socket.c:2595 [inline]
__se_sys_recvmmsg net/socket.c:2591 [inline]
__x64_sys_recvmmsg+0xba/0x150 net/socket.c:2591
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f6365b940c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f63640e5168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f6365cb4050 RCX: 00007f6365b940c9
RDX: 00000000040001b7 RSI: 0000000020007840 RDI: 0000000000000003
RBP: 00007f6365befae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc1df7d8f R14: 00007f63640e5300 R15: 0000000000022000
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
0: 08 00 or %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 00 add %al,(%rax)
6: 00 48 c1 add %cl,-0x3f(%rax)
9: e8 03 80 3c 10 callq 0x103c8011
e: 00 0f add %cl,(%rdi)
10: 85 b7 01 00 00 48 test %esi,0x48000001(%rdi)
16: 83 3d 09 2e a6 08 00 cmpl $0x0,0x8a62e09(%rip) # 0x8a62e26
1d: 0f 84 2a 01 00 00 je 0x14d
23: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi
28: 57 push %rdi
29: 9d popfq
* 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction
2f: 48 83 c4 18 add $0x18,%rsp
33: 5b pop %rbx
34: 5d pop %rbp
35: 41 5c pop %r12
37: 41 5d pop %r13
39: 41 5e pop %r14
3b: 41 5f pop %r15
3d: c3 retq
3e: 65 gs
3f: 8b .byte 0x8b