watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz-executor.3:14012] Modules linked in: irq event stamp: 12697921 hardirqs last enabled at (12697920): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 hardirqs last disabled at (12697921): [] sysvec_apic_timer_interrupt+0xa/0xb0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (8263770): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last enabled at (8263770): [] __irq_exit_rcu+0x245/0x280 kernel/softirq.c:637 softirqs last disabled at (8263773): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last disabled at (8263773): [] __irq_exit_rcu+0x245/0x280 kernel/softirq.c:637 CPU: 1 PID: 14012 Comm: syz-executor.3 Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mac80211_hwsim_tx_frame_no_nl+0xae3/0x1980 drivers/net/wireless/mac80211_hwsim.c:1529 Code: 89 df e8 c0 d1 38 fc 4c 8b 33 49 8d 9f e8 3d 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a0 d1 38 fc 48 8b 1b <4c> 89 f6 48 21 de 31 ff e8 d0 c9 f0 fb 49 21 de 0f 84 d3 00 00 00 RSP: 0018:ffffc90000dc0940 EFLAGS: 00000246 RAX: 1ffff11006255df9 RBX: 0000000000000001 RCX: ffff8880286f9c40 RDX: 0000000000000104 RSI: ffffffff8d87cd90 RDI: 0000000000000000 RBP: ffffc90000dc0b10 R08: 0000000000000005 R09: ffffffff858e43ab R10: 0000000000000002 R11: ffff8880286f9c40 R12: 1ffff920001b8155 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880312ab1e0 FS: 00007f2977652700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e925000 CR3: 00000000178cf000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac80211_hwsim_tx_frame+0x143/0x180 drivers/net/wireless/mac80211_hwsim.c:1775 mac80211_hwsim_beacon_tx+0x4b9/0x870 drivers/net/wireless/mac80211_hwsim.c:1829 __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:debug_spin_lock_before kernel/locking/spinlock_debug.c:84 [inline] RIP: 0010:do_raw_spin_lock+0xc9/0x8e0 kernel/locking/spinlock_debug.c:112 Code: c1 e8 03 48 89 44 24 18 80 3c 10 00 74 18 48 89 df 4d 89 c6 e8 08 03 64 00 4d 89 f0 48 ba 00 00 00 00 00 fc ff df 48 89 1c 24 <48> 8b 03 65 48 8b 0c 25 80 ef 01 00 48 89 4c 24 20 48 39 c8 0f 84 RSP: 0018:ffffc900026dfb40 EFLAGS: 00000246 RAX: 1ffffffff1a0286f RBX: ffffffff8d014378 RCX: 1ffff920004dbf70 RDX: dffffc0000000000 RSI: 1ffff920004dbf70 RDI: ffffffff8d014368 RBP: ffffc900026dfc10 R08: ffffffff8d014368 R09: fffffbfff204ddb2 R10: fffffbfff204ddb2 R11: 0000000000000000 R12: ffffffff8d01436c R13: ffff88802136c158 R14: dffffc0000000000 R15: 1ffffffff1a0286d spin_lock include/linux/spinlock.h:354 [inline] chroot_fs_refs+0xf2/0x5c0 fs/fs_struct.c:70 __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:00007f2977652188 EFLAGS: 00000246 ORIG_RAX: 000000000000009b RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000340 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffcf5e7e5ff R14: 00007f2977652300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14013 Comm: kworker/u4:0 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+0x161/0x480 kernel/locking/qrwlock.c:78 Code: 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 89 f9 80 e1 07 80 c1 03 38 c1 7c de 4c 89 ff e8 f6 RSP: 0018:ffffc900026ffb80 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 1ffff920004dff7a RCX: ffffffff8163380a RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8cc0a040 RBP: ffffc900026ffc30 R08: dffffc0000000000 R09: fffffbfff1981409 R10: fffffbfff1981409 R11: 0000000000000000 R12: ffffc900026ffbd0 R13: dffffc0000000000 R14: 1ffffffff1981408 R15: ffffffff8cc0a040 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005562f3d65668 CR3: 0000000014bc0000 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 call_usermodehelper_exec_async+0x3a1/0x3b0 kernel/umh.c:125 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294