watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz-executor.1:8692] Modules linked in: irq event stamp: 14526711 hardirqs last enabled at (14526710): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:673 hardirqs last disabled at (14526711): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (12840010): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last enabled at (12840010): [] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 softirqs last disabled at (12840013): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last disabled at (12840013): [] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 CPU: 0 PID: 8692 Comm: syz-executor.1 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_next_frame+0x1383/0x1ce0 arch/x86/kernel/unwind_orc.c:587 Code: 86 00 4c 8b 44 24 20 e9 cf fd ff ff 4c 8b 64 24 60 49 8d 78 02 48 b9 00 00 00 00 00 fc ff df 49 8d 56 40 48 89 f8 48 c1 e8 03 <0f> b6 34 08 49 8d 40 03 49 89 c1 49 c1 e9 03 41 0f b6 0c 09 49 89 RSP: 0018:ffffc90000007798 EFLAGS: 00000216 RAX: 1ffffffff1d6b33a RBX: 1ffff92000000efb RCX: dffffc0000000000 RDX: ffffc900000078b0 RSI: 0000000000000001 RDI: ffffffff8eb599d0 RBP: 0000000000000002 R08: ffffffff8eb599ce R09: 0000000000000001 R10: fffff52000000f19 R11: 0000000000084087 R12: ffffc90000007cd8 R13: ffffc900000078a5 R14: ffffc90000007870 R15: ffffffff8eb599d2 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e4da4 CR3: 0000000172507000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:360 [inline] ____kasan_slab_free mm/kasan/common.c:325 [inline] __kasan_slab_free+0xfb/0x130 mm/kasan/common.c:368 kasan_slab_free include/linux/kasan.h:212 [inline] slab_free_hook mm/slub.c:1581 [inline] slab_free_freelist_hook+0xdf/0x240 mm/slub.c:1606 slab_free mm/slub.c:3166 [inline] kmem_cache_free+0x8a/0x740 mm/slub.c:3182 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:684 __kfree_skb net/core/skbuff.c:741 [inline] consume_skb net/core/skbuff.c:896 [inline] consume_skb+0xcf/0x160 net/core/skbuff.c:890 mac80211_hwsim_tx_frame+0x157/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1776 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1829 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1852 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 RIP: 0010:mm_update_next_owner+0x51c/0x7a0 kernel/exit.c:392 Code: 0f 84 eb fe ff ff e8 d3 68 2f 00 48 8d 85 a0 04 00 00 48 89 c2 48 c1 ea 03 80 3c 1a 00 0f 85 96 01 00 00 4c 8b b5 a0 04 00 00 <4d> 39 e6 75 95 49 89 c5 e9 65 fc ff ff e8 a2 68 2f 00 48 89 ef e8 RSP: 0018:ffffc9000dbcfb00 EFLAGS: 00000246 RAX: ffff88807c28a0e0 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 1ffff1100f85141c RSI: ffffffff81456a4d RDI: ffff88807c28a460 RBP: ffff88807c289c40 R08: 0000000000000000 R09: ffffffff8bc0a083 R10: ffffffff814569af R11: 0000000000000000 R12: ffff88801252bf00 R13: ffff88807c289c40 R14: ffff88801252c600 R15: ffff8880805a6190 exit_mm kernel/exit.c:501 [inline] do_exit+0xb02/0x2a60 kernel/exit.c:813 do_group_exit+0x125/0x310 kernel/exit.c:923 get_signal+0x47f/0x2150 kernel/signal.c:2818 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x171/0x280 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: Unable to access opcode bytes at RIP 0x4665af. RSP: 002b:00007fae99e65218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056bf68 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68 RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c R13: 00007fff3955254f R14: 00007fae99e65300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8686 Comm: syz-executor.1 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x137/0x2c0 kernel/locking/qrwlock.c:78 Code: 00 00 00 00 fc ff df 49 01 c7 41 83 c6 03 41 0f b6 07 41 38 c6 7c 08 84 c0 0f 85 3e 01 00 00 8b 03 3d 00 01 00 00 74 19 f3 90 <41> 0f b6 07 41 38 c6 7c ec 84 c0 74 e8 48 89 df e8 74 d5 5e 00 eb RSP: 0018:ffffc9000dbafc98 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8bc0a080 RCX: ffffffff815afb9f RDX: fffffbfff1781411 RSI: 0000000000000004 RDI: ffffffff8bc0a080 RBP: 1ffff92001b75f94 R08: 0000000000000001 R09: ffffffff8bc0a083 R10: fffffbfff1781410 R11: 0000000000000000 R12: ffffffff8bc0a084 R13: 00000000000000ff R14: 0000000000000003 R15: fffffbfff1781410 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d13c000 CR3: 0000000053f64000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:97 [inline] do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207 exit_notify kernel/exit.c:668 [inline] do_exit+0xc4a/0x2a60 kernel/exit.c:846 do_group_exit+0x125/0x310 kernel/exit.c:923 __do_sys_exit_group kernel/exit.c:934 [inline] __se_sys_exit_group kernel/exit.c:932 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:932 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: Unable to access opcode bytes at RIP 0x4665af. RSP: 002b:00007fff39552778 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00000000004665d9 RDX: 00000000004193eb RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2d12dc74 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff39552870