watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.5:10367] Modules linked in: irq event stamp: 18312083 hardirqs last enabled at (18312082): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:655 hardirqs last disabled at (18312083): [] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (17347450): [] asm_call_irq_on_stack+0xf/0x20 softirqs last disabled at (17347453): [] asm_call_irq_on_stack+0xf/0x20 CPU: 0 PID: 10367 Comm: syz-executor.5 Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:write_comp_data kernel/kcov.c:218 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x3/0x70 kernel/kcov.c:284 Code: 83 c2 01 48 c7 44 30 e0 03 00 00 00 48 89 7c 30 e8 48 89 4c 30 f0 4c 89 54 d8 20 48 89 10 5b c3 0f 1f 80 00 00 00 00 41 89 f8 03 00 00 00 4c 8b 14 24 89 f1 65 48 8b 34 25 00 f0 01 00 e8 44 RSP: 0018:ffffc90000007918 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff88801c805340 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffff888018c45490 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8857966c R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888018c453c0 R14: 0000000000000001 R15: 00000000ffffffff FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cf29000 CR3: 0000000013bed000 CR4: 0000000000350ef0 Call Trace: ieee80211_rx_h_decrypt net/mac80211/rx.c:1959 [inline] ieee80211_rx_handlers+0xba4/0xae60 net/mac80211/rx.c:3771 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3823 [inline] ieee80211_prepare_and_rx_handle+0x245f/0x6210 net/mac80211/rx.c:4505 __ieee80211_rx_handle_packet net/mac80211/rx.c:4566 [inline] ieee80211_rx_list+0x1077/0x2430 net/mac80211/rx.c:4746 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4769 ieee80211_rx include/net/mac80211.h:4508 [inline] ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x1d7/0x2d0 kernel/softirq.c:555 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:mm_update_next_owner+0x44e/0x7a0 kernel/exit.c:388 Code: fb ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b5 02 00 00 44 8b b5 dc fb ff ff <31> ff 41 81 e6 00 00 20 00 44 89 f6 e8 c1 bd 2e 00 45 85 f6 0f 85 RSP: 0018:ffffc90017a7fb18 EFLAGS: 00000246 RAX: 0000000000000007 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81441e20 RDI: ffff88801bf09bec RBP: ffff88801bf0a010 R08: 0000000000000000 R09: ffffffff8ba0a083 R10: ffffffff81441e5f R11: 0000000000000001 R12: ffff88801bda4e00 R13: ffff88801bf09bc0 R14: 0000000004208060 R15: ffff888140750010 exit_mm kernel/exit.c:500 [inline] do_exit+0xb62/0x2ae0 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x427/0x20f0 kernel/signal.c:2773 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 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+0x148/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x465b09 Code: Unable to access opcode bytes at RIP 0x465adf. RSP: 002b:00007f973b6f1218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056bf68 RCX: 0000000000465b09 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68 RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c R13: 00007ffd6d966daf R14: 00007f973b6f1300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8466 Comm: syz-executor.4 Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x131/0x270 kernel/locking/qrwlock.c:77 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 fe 00 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 ca 1f 5c 00 eb RSP: 0018:ffffc90001cdfa40 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8ba0a080 RCX: ffffffff81598f9a RDX: fffffbfff1741411 RSI: 0000000000000004 RDI: ffffffff8ba0a080 RBP: 00000000000000ff R08: 0000000000000001 R09: ffffffff8ba0a083 R10: fffffbfff1741410 R11: 0000000000000000 R12: 1ffff9200039bf49 R13: ffffffff8ba0a084 R14: 0000000000000003 R15: fffffbfff1741410 FS: 0000000002171400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000014a53ad CR3: 00000000677ec000 CR4: 0000000000350ee0 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:95 [inline] do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207 copy_process+0x33c9/0x6fd0 kernel/fork.c:2216 kernel_clone+0xe7/0xab0 kernel/fork.c:2462 __do_sys_clone+0xc8/0x110 kernel/fork.c:2579 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4640fb Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00 RSP: 002b:00007ffff37954e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004640fb RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000002171400 R10: 00000000021716d0 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffff37955d0