watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:19378] Modules linked in: irq event stamp: 2637740 hardirqs last enabled at (2637739): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2637740): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2635548): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2635441): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2635441): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 19378 Comm: syz-executor.5 Not tainted 4.19.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:123 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:436 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x3c5/0xae0 kernel/locking/qspinlock.c:474 Code: fc ff df 4c 8d 2c 01 eb 0c f3 90 41 83 ec 01 0f 84 38 04 00 00 41 0f b6 45 00 38 d8 7f 08 84 c0 0f 85 75 05 00 00 0f b6 45 00 <84> c0 75 db be 02 00 00 00 48 89 ef e8 2a 92 4c 00 b8 00 01 00 00 RSP: 0018:ffff8880489b7a20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff1479f08 RDX: 0000000000000001 RSI: ffffffff81678675 RDI: 0000000000000286 RBP: ffffffff8a3cf840 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000045c2 R13: fffffbfff1479f08 R14: 0000000000000001 R15: ffff8880ba02bd80 FS: 00007f6179186700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33523000 CR3: 000000006c7a9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:679 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:53 [inline] queued_spin_lock include/asm-generic/qspinlock.h:88 [inline] do_raw_spin_lock+0x189/0x220 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:329 [inline] proc_keys_start+0x4d/0x450 security/keys/proc.c:123 seq_read+0x2a0/0x1160 fs/seq_file.c:224 proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231 __vfs_read+0xf7/0x750 fs/read_write.c:416 vfs_read+0x194/0x3c0 fs/read_write.c:452 ksys_read+0x12b/0x2a0 fs/read_write.c:579 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6179186188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000002020 RSI: 0000000020004780 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffdc098c35f R14: 00007f6179186300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19379 Comm: syz-executor.0 Not tainted 4.19.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_is_held+0xb1/0x160 kernel/locking/lockdep.c:3725 Code: d2 0f 85 b5 00 00 00 66 f7 43 22 f0 ff 74 0f 4c 89 f6 48 89 df e8 af f7 ff ff 85 c0 75 2f 83 c5 01 41 39 af 80 08 00 00 7e 70 <48> 63 c5 48 8d 04 80 49 8d 1c c4 48 8d 7b 10 48 89 f8 48 c1 e8 03 RSP: 0018:ffff8880ba1075c0 EFLAGS: 00000006 RAX: 0000000000000003 RBX: ffff8880a53d8e58 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8880a53d8e7a RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66305b R12: ffff8880a53d8e08 R13: dffffc0000000000 R14: ffffffff89f85e20 R15: ffff8880a53d8580 FS: 00007f9ed86a6700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000056c000 CR3: 00000000a53b3000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held_type+0x10d/0x210 kernel/locking/lockdep.c:3945 lock_is_held include/linux/lockdep.h:344 [inline] rcu_read_lock_sched_held+0x16c/0x1d0 kernel/rcu/update.c:118 trace_hrtimer_expire_exit include/trace/events/timer.h:274 [inline] __run_hrtimer kernel/time/hrtimer.c:1420 [inline] __hrtimer_run_queues+0xbd9/0xe60 kernel/time/hrtimer.c:1481 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1539 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:filter_irq_stacks mm/kasan/kasan.c:428 [inline] RIP: 0010:save_stack mm/kasan/kasan.c:449 [inline] RIP: 0010:set_track mm/kasan/kasan.c:460 [inline] RIP: 0010:kasan_kmalloc+0xef/0x160 mm/kasan/kasan.c:553 Code: 00 00 48 01 f5 89 45 00 48 b8 00 00 00 00 40 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 e8 45 d6 8a ff 8b 44 24 08 <85> c0 74 39 48 8b 74 24 10 31 c9 48 63 d1 48 8b 14 d6 48 81 fa 48 RSP: 0018:ffff8880ba1078f0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 000000000000001d RBX: ffff8880b5152c68 RCX: 000000000000001d RDX: ffff8880ba107910 RSI: 0000000000000007 RDI: 0000000000000286 RBP: ffff8880b5152c68 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000074071 R12: 0000000000480020 R13: 0000000000000000 R14: ffff88823b2b7540 R15: 00000000000000e8 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407 netdev_alloc_skb include/linux/skbuff.h:2680 [inline] dev_alloc_skb include/linux/skbuff.h:2693 [inline] __ieee80211_beacon_get+0xc7d/0x1a30 net/mac80211/tx.c:4332 ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4443 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:535 [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:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: e8 61 c1 35 00 e9 ab fe ff ff 4c 89 ef e8 54 c1 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 <65> 48 8b 04 25 80 df 01 00 65 8b 15 3c 81 9f 7e 81 e2 00 01 1f 00 RSP: 0018:ffff8880aa447670 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: dffffc0000000000 RCX: ffffffff87eec09e RDX: 0000000000000004 RSI: ffffffff87eec0a8 RDI: 0000000000000004 RBP: 0000000000000004 R08: 0000000000000004 R09: 0000000000000004 R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff11015488ed1 R13: ffff88806e92d080 R14: 0000000000000004 R15: ffff88806e92c143 widen_string+0xd8/0x2a0 lib/vsprintf.c:578 string+0x1bb/0x220 lib/vsprintf.c:612 vsnprintf+0x71b/0x14f0 lib/vsprintf.c:2293 seq_vprintf fs/seq_file.c:391 [inline] seq_printf+0x195/0x240 fs/seq_file.c:406 proc_keys_show+0x783/0xbf0 security/keys/proc.c:228 seq_read+0xbcd/0x1160 fs/seq_file.c:268 proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231 __vfs_read+0xf7/0x750 fs/read_write.c:416 vfs_read+0x194/0x3c0 fs/read_write.c:452 ksys_read+0x12b/0x2a0 fs/read_write.c:579 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9ed86a6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000002020 RSI: 0000000020004780 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc3f5cd15f R14: 00007f9ed86a6300 R15: 0000000000022000