watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz-executor.3:5574] CPU#0 Utilization every 22s during lockup: #1: 0% system, 6% softirq, 95% hardirq, 0% idle #2: 1% system, 6% softirq, 95% hardirq, 0% idle #3: 0% system, 6% softirq, 95% hardirq, 0% idle #4: 0% system, 6% softirq, 95% hardirq, 0% idle #5: 1% system, 6% softirq, 95% hardirq, 0% idle CPU#0 Detect HardIRQ Time exceeds 50%. Most frequent HardIRQs: #1: 33 irq#36 #2: 26 irq#35 Modules linked in: irq event stamp: 13077955 hardirqs last enabled at (13077954): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (13077955): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (11738246): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (11738246): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (11738246): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (11738249): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (11738249): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (11738249): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 PID: 5574 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00242-g36534d3c5453 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline] RIP: 0010:write_comp_data kernel/kcov.c:235 [inline] RIP: 0010:__sanitizer_cov_trace_cmp4+0x8/0x90 kernel/kcov.c:278 Code: 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 14 25 00 d5 03 00 65 8b 05 b0 ac 6d 7e a9 00 01 ff 00 74 RSP: 0018:ffffc90000005d80 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888028bfbc00 RDX: 0000000000000305 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000005e60 R08: ffffffff81410cdb R09: ffffffff814108cf R10: 0000000000000003 R11: ffff888028bfbc00 R12: ffffc9000d6bf3c8 R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000000bcc FS: 00007f01ab79d6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007effdeed1440 CR3: 000000002092e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x1d7b/0x2a00 arch/x86/kernel/unwind_orc.c:664 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3940 [inline] slab_alloc_node mm/slub.c:4000 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4007 skb_clone+0x20c/0x390 net/core/skbuff.c:2052 dev_queue_xmit_nit+0x419/0xc10 net/core/dev.c:2311 xmit_one net/core/dev.c:3574 [inline] dev_hard_start_xmit+0x15f/0x7e0 net/core/dev.c:3594 sch_direct_xmit+0x2b6/0x5f0 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3807 [inline] __dev_queue_xmit+0x1a24/0x3d30 net/core/dev.c:4359 dev_queue_xmit include/linux/netdevice.h:3095 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0xd41/0x1380 net/ipv4/ip_output.c:235 ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0x118c/0x1b70 net/ipv4/ip_output.c:535 __tcp_transmit_skb+0x2557/0x3b80 net/ipv4/tcp_output.c:1466 tcp_ack_snd_check net/ipv4/tcp_input.c:5740 [inline] tcp_rcv_established+0x107e/0x2020 net/ipv4/tcp_input.c:6180 tcp_v4_do_rcv+0x965/0xc60 net/ipv4/tcp_ipv4.c:1909 tcp_v4_rcv+0x2d90/0x37b0 net/ipv4/tcp_ipv4.c:2345 ip_protocol_deliver_rcu+0x225/0x430 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x33f/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 ip_local_deliver net/ipv4/ip_input.c:254 [inline] dst_input include/net/dst.h:460 [inline] ip_sublist_rcv_finish+0x3be/0x4f0 net/ipv4/ip_input.c:580 ip_list_rcv_finish net/ipv4/ip_input.c:631 [inline] ip_sublist_rcv+0x75d/0xab0 net/ipv4/ip_input.c:639 ip_list_rcv+0x42b/0x480 net/ipv4/ip_input.c:674 __netif_receive_skb_list_ptype net/core/dev.c:5668 [inline] __netif_receive_skb_list_core+0x95a/0x980 net/core/dev.c:5716 __netif_receive_skb_list net/core/dev.c:5768 [inline] netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5860 gro_normal_list include/net/gro.h:515 [inline] gro_normal_one include/net/gro.h:528 [inline] napi_skb_finish net/core/gro.c:609 [inline] napi_gro_receive+0x5aa/0xc90 net/core/gro.c:639 receive_buf+0x1d0a/0x3830 drivers/net/virtio_net.c:1985 virtnet_receive drivers/net/virtio_net.c:2259 [inline] virtnet_poll+0x7f8/0x18c0 drivers/net/virtio_net.c:2362 __napi_poll+0xcb/0x490 net/core/dev.c:6722 napi_poll net/core/dev.c:6791 [inline] net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:7067 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 f5 c7 d5 f5 e8 20 c2 0d f6 fb bf 01 00 00 00 95 ad ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 85 18 6c f6 48 RSP: 0018:ffffc9000d6bf300 EFLAGS: 00000286 RAX: d7729998b03a9400 RBX: 1ffff92001ad7e68 RCX: ffffffff8172d78a RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: 0000000000000001 RBP: ffffc9000d6bf3c0 R08: ffffffff92fab63f R09: 1ffffffff25f56c7 R10: dffffc0000000000 R11: fffffbfff25f56c8 R12: 1ffff92001ad7e60 R13: 1ffff92001ad7e64 R14: ffffc9000d6bf320 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:bio_alloc_bioset+0x33c/0x1130 Code: b6 04 20 84 c0 0f 85 12 0b 00 00 48 89 eb 8b 6d 58 44 89 f7 89 ee e8 33 6f 08 fd 44 89 f8 25 ff ff 7f ff 41 39 ee 41 0f 4d c7 <89> 44 24 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 RSP: 0018:ffffc9000d6bf488 EFLAGS: 00000246 RAX: 0000000000003801 RBX: ffffffff94951440 RCX: 0000000000040000 RDX: ffff888028bfbc00 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 0000000000000002 R08: ffffffff848db90d R09: 000000000000000d R10: dffffc0000000000 R11: fffffbfff1f5a966 R12: dffffc0000000000 R13: 0000000000000c00 R14: 0000000000000002 R15: 0000000000003801 bio_alloc include/linux/bio.h:437 [inline] submit_bh_wbc+0x277/0x560 fs/buffer.c:2807 __flush_batch+0x123/0x3a0 fs/jbd2/checkpoint.c:128 jbd2_log_do_checkpoint+0x927/0xe50 fs/jbd2/checkpoint.c:281 jbd2_journal_flush+0x1d6/0xc10 fs/jbd2/journal.c:2457 ext4_ioctl_checkpoint fs/ext4/ioctl.c:1099 [inline] __ext4_ioctl fs/ext4/ioctl.c:1606 [inline] ext4_ioctl+0x33cc/0x55a0 fs/ext4/ioctl.c:1626 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f01aaa7cea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f01ab79d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f01aabb3f80 RCX: 00007f01aaa7cea9 RDX: 00000000200005c0 RSI: 000000004004662b RDI: 0000000000000003 RBP: 00007f01aaaebff4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f01aabb3f80 R15: 00007ffe1e5b1018 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5093 Comm: syz-fuzzer Not tainted 6.10.0-rc2-syzkaller-00242-g36534d3c5453 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] RIP: 0010:kvm_wait+0x250/0x2c0 arch/x86/kernel/kvm.c:1060 Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 da df 55 00 e8 35 4c 5d 00 45 38 f7 75 15 66 90 e8 49 df 55 00 0f 00 2d 82 d8 87 0a fb f4 50 fe ff ff e8 36 df 55 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc900035375c0 EFLAGS: 000002d3 RAX: ffffffff81404737 RBX: ffff88807ebfa680 RCX: ffff88807ffa3c00 RDX: 0000000000000000 RSI: ffffffff8bcabb80 RDI: ffffffff8c1ff380 RBP: ffffc90003537690 R08: ffffffff92fab63f R09: 1ffffffff25f56c7 R10: dffffc0000000000 R11: fffffbfff25f56c8 R12: 1ffff920006a6ebc R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 000000c0007be090(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558405b938 CR3: 000000002092a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:596 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline] __pv_queued_spin_lock_slowpath+0x8d0/0xdc0 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x6a/0x100 net/core/sock.c:3537 lock_sock include/net/sock.h:1602 [inline] tcp_recvmsg+0x23c/0x920 net/ipv4/tcp.c:2589 inet_recvmsg+0x150/0x2d0 net/ipv4/af_inet.c:885 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x1ae/0x280 net/socket.c:1068 sock_read_iter+0x2ca/0x3e0 net/socket.c:1138 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x9c4/0xbd0 fs/read_write.c:476 ksys_read+0x1a0/0x2c0 fs/read_write.c:619 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x40720e Code: 48 83 ec 38 e8 13 00 00 00 48 83 c4 38 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 RSP: 002b:000000c0006f96a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000040720e RDX: 0000000000061b84 RSI: 000000c000984000 RDI: 0000000000000003 RBP: 000000c0006f96e8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000c0007cfe10 R13: 5555555555555011 R14: 000000c0000061a0 R15: 00000000000000f2