watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.2:9810] Modules linked in: irq event stamp: 3481315 hardirqs last enabled at (3481314): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3481315): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (0): [] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856 softirqs last disabled at (791): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (791): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 9810 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911 Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b RSP: 0018:ffff8880ba007c50 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: ffff8880a324a440 RCX: 00000000000020e2 RDX: dffffc0000000000 RSI: 00000000ad4086a6 RDI: 0000000000000286 RBP: ffff88809f932480 R08: ffffffff8cd27c50 R09: 0000000000000002 R10: ffff8880a324ad18 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f8ec2646700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000059ec6000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] pie_timer+0x92/0x740 net/sched/sch_pie.c:433 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __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:536 [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:orc_find arch/x86/kernel/unwind_orc.c:152 [inline] RIP: 0010:unwind_next_frame+0x2eb/0x1400 arch/x86/kernel/unwind_orc.c:422 Code: 24 30 89 4c 24 28 44 89 5c 24 20 e8 0f de 6e 00 48 8b 54 24 38 48 8b 74 24 30 8b 4c 24 28 44 8b 5c 24 20 8b 14 95 bc 91 17 8c <89> c8 48 8d 3c 40 4c 8d 8c 3f 30 ce 8c 8b 83 c2 01 49 81 f9 ba 91 RSP: 0018:ffff888211597850 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000003 RBX: 1ffff110422b2f13 RCX: 0000000000022d60 RDX: 0000000000022d6a RSI: 0000000000009854 RDI: ffffffff8c19f310 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: ffff8882115979df R11: 0000000000074071 R12: ffff8882115979c8 R13: ffff8882115979b5 R14: ffff888211597980 R15: ffffffff8198548a __save_stack_trace+0xd6/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x144/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] user_preparse+0x93/0x1a0 security/keys/user_defined.c:71 key_create_or_update+0x3c2/0xb90 security/keys/key.c:852 __do_sys_add_key security/keys/keyctl.c:123 [inline] __se_sys_add_key+0x2c8/0x430 security/keys/keyctl.c:63 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f8ec50d0ae9 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:00007f8ec2646188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f8 RAX: ffffffffffffffda RBX: 00007f8ec51e3f60 RCX: 00007f8ec50d0ae9 RDX: 0000000020000500 RSI: 00000000200004c0 RDI: 0000000020000480 RBP: 00007f8ec512af6d R08: fffffffffffffffd R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff416c92ff R14: 00007f8ec2646300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9803 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:656 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:661 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x1d4/0x420 kernel/smp.c:302 Code: 85 f6 0f 84 b8 00 00 00 e8 09 04 0a 00 48 8b 4c 24 08 48 8b 54 24 10 48 8d 74 24 40 8b 7c 24 1c e8 a1 f9 ff ff 41 89 c5 eb 07 e7 03 0a 00 f3 90 44 8b 64 24 58 31 ff 41 83 e4 01 44 89 e6 e8 RSP: 0018:ffff888213c97a60 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffff11042792f50 RCX: ffffffff8158819e RDX: 0000000000000001 RSI: ffff8880951ee000 RDI: 0000000000000005 RBP: ffff888213c97b30 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a324a47c FS: 00005555566b6400(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd67dc10718 CR3: 0000000059ec6000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: task_function_call+0xe0/0x170 kernel/events/core.c:115 event_function_call+0x228/0x430 kernel/events/core.c:283 perf_remove_from_context+0x9b/0x1c0 kernel/events/core.c:2113 perf_event_release_kernel+0x169/0xcd0 kernel/events/core.c:4607 perf_release+0x33/0x40 kernel/events/core.c:4703 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f8ec508372b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fff416c9360 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f8ec508372b RDX: 0000001b2c925538 RSI: ffffffff83771e31 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2c925188 R10: 0000000000000608 R11: 0000000000000293 R12: 00007f8ec51e4b60 R13: 00007f8ec51e4b60 R14: 00007f8ec51e3f60 R15: 0000000000335b81 ---------------- Code disassembly (best guess): 0: 08 00 or %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 00 48 c1 add %cl,-0x3f(%rax) 9: e8 03 80 3c 10 callq 0x103c8011 e: 00 0f add %cl,(%rdi) 10: 85 b7 01 00 00 48 test %esi,0x48000001(%rdi) 16: 83 3d 09 2e a6 08 00 cmpl $0x0,0x8a62e09(%rip) # 0x8a62e26 1d: 0f 84 2a 01 00 00 je 0x14d 23: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi 28: 57 push %rdi 29: 9d popfq * 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 2f: 48 83 c4 18 add $0x18,%rsp 33: 5b pop %rbx 34: 5d pop %rbp 35: 41 5c pop %r12 37: 41 5d pop %r13 39: 41 5e pop %r14 3b: 41 5f pop %r15 3d: c3 retq 3e: 65 gs 3f: 8b .byte 0x8b