watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz-executor.3:25063] Modules linked in: irq event stamp: 61666 hardirqs last enabled at (61665): [] kvm_wait arch/x86/kernel/kvm.c:997 [inline] hardirqs last enabled at (61665): [] kvm_wait+0x8d/0x100 arch/x86/kernel/kvm.c:979 hardirqs last disabled at (61666): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1097 softirqs last enabled at (846): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (846): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (825): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (825): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 CPU: 1 PID: 25063 Comm: syz-executor.3 Not tainted 5.16.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1001 Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 63 0f b6 07 40 38 c6 74 35 48 83 c4 10 c3 c3 e8 83 60 4a 00 eb 07 0f 00 2d 2a 8f 75 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 46 5b 4a 00 8b 74 24 0c RSP: 0018:ffffc90005d67950 EFLAGS: 00000206 RAX: 000000000000f0e1 RBX: 0000000000000000 RCX: 1ffffffff1ff34a6 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8b8146c0 R08: 0000000000000001 R09: ffffffff8ff78a5f R10: 0000000000000001 R11: 00000000ffff8000 R12: 0000000000000000 R13: fffffbfff17028d8 R14: 0000000000000001 R15: ffff8880b9d3a880 FS: 00005555567a5400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5f13cb1743 CR3: 000000009b7be000 CR4: 0000000000350ee0 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:349 [inline] insert_inode_locked+0xe3/0x5d0 fs/inode.c:1558 __ext4_new_inode+0x1b7a/0x5ba0 fs/ext4/ialloc.c:1271 ext4_symlink+0x485/0xd40 fs/ext4/namei.c:3293 vfs_symlink fs/namei.c:4248 [inline] vfs_symlink+0x45d/0x6c0 fs/namei.c:4233 do_symlinkat+0x261/0x2e0 fs/namei.c:4277 __do_sys_symlink fs/namei.c:4299 [inline] __se_sys_symlink fs/namei.c:4297 [inline] __x64_sys_symlink+0x75/0x90 fs/namei.c:4297 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f13c317a7 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 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:00007ffc76cb5d88 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f13c317a7 RDX: 00007ffc76cb5e67 RSI: 00007f5f13c8c09d RDI: 00007ffc76cb5e50 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc76cb5c20 R10: 00007ffc76cb5ad7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc76cb5e50 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 25061 Comm: syz-executor.5 Not tainted 5.16.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x4b/0x54a0 kernel/locking/lockdep.c:4885 Code: 84 24 20 01 00 00 48 c7 84 24 88 00 00 00 b3 8a b5 41 48 c7 84 24 90 00 00 00 45 6c 37 8b 48 c7 84 24 98 00 00 00 20 53 5c 81 <44> 89 44 24 08 48 89 44 24 20 48 8d 84 24 88 00 00 00 48 c1 e8 03 RSP: 0018:ffffc90000007b90 EFLAGS: 00000086 RAX: 0000000000000000 RBX: ffff888029c1c300 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888029c1c300 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000555556409400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020728000 CR3: 0000000023222000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: lock_acquire kernel/locking/lockdep.c:5637 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] advance_sched+0x53/0x9a0 net/sched/sch_taprio.c:714 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605 Code: be a5 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc90009c779d8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff9200138ef3d RCX: ffffffff815c694f RDX: 1ffff110067e288b RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8ff78a97 R10: fffffbfff1fef152 R11: 00000000ffff8000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888071a1dcf8 R15: 0000000000000000 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] insert_inode_locked+0x34f/0x5d0 fs/inode.c:1572 __ext4_new_inode+0x1b7a/0x5ba0 fs/ext4/ialloc.c:1271 ext4_symlink+0x485/0xd40 fs/ext4/namei.c:3293 vfs_symlink fs/namei.c:4248 [inline] vfs_symlink+0x45d/0x6c0 fs/namei.c:4233 do_symlinkat+0x261/0x2e0 fs/namei.c:4277 __do_sys_symlink fs/namei.c:4299 [inline] __se_sys_symlink fs/namei.c:4297 [inline] __x64_sys_symlink+0x75/0x90 fs/namei.c:4297 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fa0438a47a7 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 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:00007ffc2f585e08 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa0438a47a7 RDX: 00007ffc2f585ee3 RSI: 00007fa0438ff0a6 RDI: 00007ffc2f585ed0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc2f585ca0 R10: 00007ffc2f585b57 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc2f585ed0 ---------------- Code disassembly (best guess): 0: fa cli 1: 83 e2 07 and $0x7,%edx 4: 38 d0 cmp %dl,%al 6: 7f 04 jg 0xc 8: 84 c0 test %al,%al a: 75 63 jne 0x6f c: 0f b6 07 movzbl (%rdi),%eax f: 40 38 c6 cmp %al,%sil 12: 74 35 je 0x49 14: 48 83 c4 10 add $0x10,%rsp 18: c3 retq 19: c3 retq 1a: e8 83 60 4a 00 callq 0x4a60a2 1f: eb 07 jmp 0x28 21: 0f 00 2d 2a 8f 75 08 verw 0x8758f2a(%rip) # 0x8758f52 28: fb sti 29: f4 hlt * 2a: 48 83 c4 10 add $0x10,%rsp <-- trapping instruction 2e: c3 retq 2f: 89 74 24 0c mov %esi,0xc(%rsp) 33: 48 89 3c 24 mov %rdi,(%rsp) 37: e8 46 5b 4a 00 callq 0x4a5b82 3c: 8b 74 24 0c mov 0xc(%rsp),%esi