watchdog: BUG: soft lockup - CPU#1 stuck for 139s! [syz-executor.4:21038] Modules linked in: irq event stamp: 12602417 hardirqs last enabled at (12602416): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 hardirqs last disabled at (12602417): [] sysvec_apic_timer_interrupt+0xa/0xb0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (9865008): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last enabled at (9865008): [] __irq_exit_rcu+0x245/0x280 kernel/softirq.c:637 softirqs last disabled at (9865011): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last disabled at (9865011): [] __irq_exit_rcu+0x245/0x280 kernel/softirq.c:637 CPU: 1 PID: 21038 Comm: syz-executor.4 Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0x130/0x180 kernel/locking/lockdep.c:5560 Code: 01 75 38 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 3c <89> d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 RSP: 0018:ffffc90000dbfff8 EFLAGS: 00000246 RAX: 6e8756ed09a70300 RBX: 0000000000000000 RCX: 0000000000000104 RDX: 0000000000000000 RSI: 0000000000000104 RDI: 0000000000000000 RBP: 0000000000000008 R08: dffffc0000000000 R09: fffffbfff1c70546 R10: fffffbfff1c70546 R11: 0000000000000000 R12: 0000000000000246 R13: ffff88802ddb1c40 R14: 00000000ffffffff R15: ffffffff8cf15b20 FS: 00007f196e97a700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000481af000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_sched_held+0x87/0x110 kernel/rcu/update.c:125 trace_lock_acquire+0x6b/0x180 include/trace/events/lock.h:13 lock_acquire+0xa9/0x720 kernel/locking/lockdep.c:5483 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:267 rcu_read_lock include/linux/rcupdate.h:657 [inline] is_bpf_text_address+0x27/0x270 kernel/bpf/core.c:704 kernel_text_address kernel/extable.c:151 [inline] __kernel_text_address+0x93/0x100 kernel/extable.c:105 unwind_get_return_address+0x48/0x80 arch/x86/kernel/unwind_orc.c:318 arch_stack_walk+0x98/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x104/0x1e0 kernel/stacktrace.c:121 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:428 [inline] __kasan_slab_alloc+0x96/0xd0 mm/kasan/common.c:461 kasan_slab_alloc include/linux/kasan.h:236 [inline] slab_post_alloc_hook mm/slab.h:524 [inline] slab_alloc_node mm/slub.c:2913 [inline] kmem_cache_alloc_node+0x206/0x380 mm/slub.c:2949 __alloc_skb+0xd8/0x580 net/core/skbuff.c:413 __netdev_alloc_skb+0xf6/0x4b0 net/core/skbuff.c:492 netdev_alloc_skb include/linux/skbuff.h:2867 [inline] dev_alloc_skb include/linux/skbuff.h:2880 [inline] __ieee80211_beacon_get+0x970/0x1e80 net/mac80211/tx.c:4836 ieee80211_beacon_get_tim+0xb7/0x830 net/mac80211/tx.c:4950 ieee80211_beacon_get include/net/mac80211.h:4938 [inline] mac80211_hwsim_beacon_tx+0xe0/0x870 drivers/net/wireless/mac80211_hwsim.c:1799 __iterate_interfaces+0x23e/0x4b0 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0x9b/0x120 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xa4/0x180 drivers/net/wireless/mac80211_hwsim.c:1852 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1601 hrtimer_run_softirq+0x176/0x1e0 kernel/time/hrtimer.c:1618 __do_softirq+0x372/0x7a6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x245/0x280 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 RIP: 0010:do_write_seqcount_begin_nested include/linux/seqlock.h:520 [inline] RIP: 0010:do_write_seqcount_begin include/linux/seqlock.h:545 [inline] RIP: 0010:chroot_fs_refs+0x1ca/0x5c0 fs/fs_struct.c:71 Code: 8d 7f 50 48 8b 84 24 98 00 00 00 48 89 7c 24 28 31 f6 31 d2 31 c9 41 b8 01 00 00 00 45 31 c9 48 89 44 24 20 50 e8 76 59 80 ff <48> 83 c4 08 49 8d 9f 90 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 RSP: 0018:ffffc9000243fc18 EFLAGS: 00010246 RAX: 6e8756ed09a70300 RBX: ffffffff8d0143a8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffff88802d9254c0 R08: dffffc0000000000 R09: fffffbfff204ddb2 R10: fffffbfff204ddb2 R11: 0000000000000000 R12: ffffc9000243fe60 R13: ffff88802d925d98 R14: dffffc0000000000 R15: ffffffff8d014360 __do_sys_pivot_root fs/namespace.c:3811 [inline] __se_sys_pivot_root+0x1ef5/0x2060 fs/namespace.c:3728 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 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:00007f196e97a188 EFLAGS: 00000246 ORIG_RAX: 000000000000009b RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000020000300 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fffa65326af R14: 00007f196e97a300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 21040 Comm: systemd-udevd Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x150/0x480 kernel/locking/qrwlock.c:78 Code: 06 e1 63 00 f0 41 81 0f 00 01 00 00 48 8b 5c 24 08 43 8a 04 2e 84 c0 0f 85 ad 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <41> 8b 07 3d 00 01 00 00 74 36 f3 90 43 0f b6 04 2e 84 c0 74 eb 44 RSP: 0018:ffffc9000255fb00 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 1ffff920004abf6a RCX: ffffffff8163380a RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8cc0a040 RBP: ffffc9000255fbb0 R08: dffffc0000000000 R09: fffffbfff1981409 R10: fffffbfff1981409 R11: 0000000000000000 R12: ffffc9000255fb50 R13: dffffc0000000000 R14: 1ffffffff1981408 R15: ffffffff8cc0a040 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e7caabd160 CR3: 00000000332b6000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:97 [inline] do_raw_write_lock+0x38a/0x4e0 kernel/locking/spinlock_debug.c:207 __raw_write_lock_irq include/linux/rwlock_api_smp.h:197 [inline] _raw_write_lock_irq+0xba/0xf0 kernel/locking/spinlock.c:311 exit_notify kernel/exit.c:668 [inline] do_exit+0x7bb/0x23d0 kernel/exit.c:846 do_group_exit+0x168/0x2d0 kernel/exit.c:923 __do_sys_exit_group+0x13/0x20 kernel/exit.c:934 __se_sys_exit_group+0x10/0x10 kernel/exit.c:932 __x64_sys_exit_group+0x37/0x40 kernel/exit.c:932 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f15037df618 Code: Unable to access opcode bytes at RIP 0x7f15037df5ee. RSP: 002b:00007ffcfc934bf8 EFLAGS: 00000212 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ffcfc934cc0 RCX: 00007f15037df618 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007ffcfc934d70 R08: 00000000000000e7 R09: fffffffffffffe50 R10: 00000000ffffffff R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000000e