watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor.3:11956] Modules linked in: irq event stamp: 18441437 hardirqs last enabled at (18441436): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:655 hardirqs last disabled at (18441437): [] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1096 softirqs last enabled at (17552500): [] asm_call_irq_on_stack+0xf/0x20 softirqs last disabled at (17552503): [] asm_call_irq_on_stack+0xf/0x20 CPU: 1 PID: 11956 Comm: syz-executor.3 Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x50 kernel/locking/spinlock.c:191 Code: f8 5d c3 66 90 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 da 76 5c f8 48 89 ef e8 82 2b 5d f8 f6 c7 02 75 1a 53 9d 01 00 00 00 e8 c1 32 51 f8 65 8b 05 ba aa 05 77 85 c0 74 0a 5b RSP: 0018:ffffc90000db0cb0 EFLAGS: 00000206 RAX: 0000000001196070 RBX: 0000000000000206 RCX: ffffffff81584017 RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000000 RBP: ffffffff8b3cdf00 R08: 0000000000000001 R09: ffffffff8ee667b7 R10: fffffbfff1dcccf6 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88805a9c0c80 R15: 000000000000000c FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d52a000 CR3: 00000000162fd000 CR4: 0000000000350ee0 Call Trace: kcov_remote_start_common include/linux/kcov.h:47 [inline] ieee80211_rx_list+0x417/0x2430 net/mac80211/rx.c:4732 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:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:mm_update_next_owner+0x432/0x7a0 kernel/exit.c:388 Code: 8d ad b0 fb ff ff 48 81 fd 90 c7 0b 8b 0f 84 65 01 00 00 e8 80 ad 2e 00 48 8d bd dc 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 RSP: 0018:ffffc90002157b18 EFLAGS: 00000213 RAX: 1ffff1100b5d0a6d RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81440df0 RDI: ffff88805ae8536c RBP: ffff88805ae85790 R08: 0000000000000000 R09: ffffffff8b00a083 R10: ffffffff81440e2f R11: 0000000000000001 R12: ffff8880295e0e00 R13: ffff88805ae85340 R14: 0000000000200000 R15: ffff88801bf62d90 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:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x465b09 Code: Unable to access opcode bytes at RIP 0x465adf. RSP: 002b:00007f7f5bf2d218 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: 00007ffe5a68e5cf R14: 00007f7f5bf2d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 11965 Comm: syz-executor.5 Not tainted 5.11.0-rc6-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 02 5c 00 eb RSP: 0018:ffffc900021b7a40 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8b00a080 RCX: ffffffff81597d9a RDX: fffffbfff1601411 RSI: 0000000000000004 RDI: ffffffff8b00a080 RBP: 00000000000000ff R08: 0000000000000001 R09: ffffffff8b00a083 R10: fffffbfff1601410 R11: 0000000000000000 R12: 1ffff92000436f49 R13: ffffffff8b00a084 R14: 0000000000000003 R15: fffffbfff1601410 FS: 000000000246c400(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba36323718 CR3: 0000000022159000 CR4: 0000000000350ef0 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: 0033:0x466f31 Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00 RSP: 002b:00007ffd23237708 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fba36323700 RCX: 0000000000466f31 RDX: 00007fba363239d0 RSI: 00007fba363232f0 RDI: 00000000003d0f00 RBP: 00007ffd23237940 R08: 00007fba36323700 R09: 00007fba36323700 R10: 00007fba363239d0 R11: 0000000000000206 R12: 00007ffd232377be R13: 00007ffd232377bf R14: 00007fba36323300 R15: 0000000000022000