RBP: 00007fc77bc4c4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fc77bd2df80 R15: 00007ffe78b532f8 watchdog: BUG: soft lockup - CPU#1 stuck for 226s! [syz-executor.4:16294] Modules linked in: CPU: 1 PID: 16294 Comm: syz-executor.4 Tainted: G W 5.15.149-syzkaller-00490-g5d96939590c0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918 Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 5b 03 f3 03 fb f4 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c RSP: 0018:ffffc900001cec80 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff92000039d94 RCX: 1ffffffff0d1aa9c RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7137ed4 RBP: ffffc900001ced30 R08: dffffc0000000000 R09: ffffed103ee26fdb R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881f7137ed4 R14: 0000000000000001 R15: 1ffff92000039d98 FS: 00007fc77a9736c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020426000 CR3: 000000011453c000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline] __pv_queued_spin_lock_slowpath+0x41b/0xc40 kernel/locking/qspinlock.c:473 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [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 include/linux/spinlock.h:187 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178 __sock_map_delete net/core/sock_map.c:416 [inline] sock_map_delete_elem+0x99/0x130 net/core/sock_map.c:448 bpf_prog_2c29ac5cdc6b1842+0x3a/0x220 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118 trace_kfree include/trace/events/kmem.h:118 [inline] kfree+0x1f3/0x220 mm/slub.c:4569 skb_free_head net/core/skbuff.c:656 [inline] skb_release_data+0x8a9/0xa80 net/core/skbuff.c:678 skb_release_all net/core/skbuff.c:743 [inline] __kfree_skb net/core/skbuff.c:757 [inline] consume_skb+0xac/0x250 net/core/skbuff.c:930 __dev_kfree_skb_any+0x159/0x180 net/core/dev.c:3148 dev_consume_skb_any include/linux/netdevice.h:4061 [inline] napi_consume_skb+0x12e/0x2a0 net/core/skbuff.c:990 free_old_xmit_skbs+0x119/0x290 drivers/net/virtio_net.c:1519 start_xmit+0x142/0x1500 drivers/net/virtio_net.c:1776 __netdev_start_xmit include/linux/netdevice.h:5059 [inline] netdev_start_xmit include/linux/netdevice.h:5073 [inline] xmit_one net/core/dev.c:3624 [inline] dev_hard_start_xmit+0x228/0x620 net/core/dev.c:3640 sch_direct_xmit+0x298/0x9b0 net/sched/sch_generic.c:342 __dev_xmit_skb net/core/dev.c:3851 [inline] __dev_queue_xmit+0x161e/0x2e70 net/core/dev.c:4220 dev_queue_xmit+0x17/0x20 net/core/dev.c:4288 neigh_hh_output include/net/neighbour.h:501 [inline] neigh_output include/net/neighbour.h:515 [inline] ip_finish_output2+0xb9f/0xf60 net/ipv4/ip_output.c:228 __ip_finish_output+0x162/0x360 ip_finish_output+0x31/0x210 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x1d6/0x420 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:444 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x1105/0x1c20 net/ipv4/ip_output.c:532 ip_queue_xmit+0x4c/0x70 net/ipv4/ip_output.c:546 __tcp_transmit_skb+0x1e84/0x3920 net/ipv4/tcp_output.c:1402 tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline] tcp_write_xmit+0x144a/0x5e80 net/ipv4/tcp_output.c:2705 __tcp_push_pending_frames+0x98/0x2f0 net/ipv4/tcp_output.c:2890 tcp_push_pending_frames include/net/tcp.h:1915 [inline] tcp_data_snd_check+0x84/0xb0 net/ipv4/tcp_input.c:5495 tcp_rcv_established+0x10ab/0x1ac0 net/ipv4/tcp_input.c:5949 tcp_v4_do_rcv+0x3d7/0xa00 net/ipv4/tcp_ipv4.c:1722 tcp_v4_rcv+0x23dd/0x2a70 net/ipv4/tcp_ipv4.c:2125 ip_protocol_deliver_rcu+0x32f/0x710 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_local_deliver+0x2c6/0x590 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:454 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline] ip_sublist_rcv+0x7e2/0x980 net/ipv4/ip_input.c:636 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671 __netif_receive_skb_list_ptype net/core/dev.c:5535 [inline] __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5583 __netif_receive_skb_list net/core/dev.c:5635 [inline] netif_receive_skb_list_internal+0x967/0xcc0 net/core/dev.c:5726 gro_normal_list net/core/dev.c:5880 [inline] napi_complete_done+0x344/0x770 net/core/dev.c:6618 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline] virtnet_poll+0xbee/0x1260 drivers/net/virtio_net.c:1592 __napi_poll+0xc4/0x5a0 net/core/dev.c:7042 napi_poll net/core/dev.c:7109 [inline] net_rx_action+0x47d/0xc50 net/core/dev.c:7196 __do_softirq+0x26d/0x5bf kernel/softirq.c:565 invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660 common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x27/0x40 arch/x86/include/asm/idtentry.h:629 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 kernel/locking/spinlock.c:202 Code: 08 00 74 0c 48 c7 c7 d8 54 8d 86 e8 41 6c e9 fc 48 83 3d 21 78 c4 01 00 74 2a 48 89 df e8 93 09 8c fc 66 90 fb bf 01 00 00 00 12 4d 83 fc 65 8b 05 b3 90 39 7b 85 c0 74 03 5b 5d c3 e8 b3 a4 RSP: 0018:ffffc90000d172e8 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff88812ab9abd8 RCX: dffffc0000000000 RDX: 0000000000000001 RSI: ffffffff856add60 RDI: 0000000000000001 RBP: ffffc90000d172f0 R08: dffffc0000000000 R09: 0000000000000003 R10: fffffbfff0e5d374 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000cc0 R14: ffff88812ab9ac80 R15: ffff8881308ccdc0 spin_unlock_irq include/linux/spinlock.h:413 [inline] __add_to_page_cache_locked+0x71a/0xa20 mm/filemap.c:941 add_to_page_cache_lru+0x11b/0x2c0 mm/filemap.c:988 pagecache_get_page+0xbe1/0xeb0 mm/filemap.c:1955 grab_cache_page_write_begin+0x5d/0xa0 mm/filemap.c:3801 ext4_da_write_begin+0x5ae/0xc30 fs/ext4/inode.c:3003 generic_perform_write+0x2bc/0x5a0 mm/filemap.c:3847 ext4_buffered_write_iter+0x48a/0x610 fs/ext4/file.c:270 ext4_file_write_iter+0x443/0x1c80 call_write_iter include/linux/fs.h:2202 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xd5d/0x1110 fs/read_write.c:594 ksys_write+0x199/0x2c0 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:656 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc77bbffea9 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:00007fc77a9730c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fc77bd2df80 RCX: 00007fc77bbffea9 RDX: 000000000d4ba0ff RSI: 00000000200009c0 RDI: 0000000000000004 RBP: 00007fc77bc4c4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fc77bd2df80 R15: 00007ffe78b532f8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 16302 Comm: syz-executor.2 Tainted: G W 5.15.149-syzkaller-00490-g5d96939590c0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918 Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 5b 03 f3 03 fb f4 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c RSP: 0018:ffffc90000d07320 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 1ffff920001a0e68 RCX: ffffffff8154fa7f RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881270fc928 RBP: ffffc90000d073d0 R08: dffffc0000000000 R09: ffffed1024e1f926 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881270fc928 R14: 0000000000000003 R15: 1ffff920001a0e6c FS: 00007f4987c386c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557153818 CR3: 00000001291ca000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [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 include/linux/spinlock.h:187 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178 __sock_map_delete net/core/sock_map.c:416 [inline] sock_map_delete_elem+0x99/0x130 net/core/sock_map.c:448 bpf_prog_2c29ac5cdc6b1842+0x3a/0x220 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118 trace_kfree include/trace/events/kmem.h:118 [inline] kfree+0x1f3/0x220 mm/slub.c:4569 sk_psock_free_link include/linux/skmsg.h:420 [inline] sock_map_del_link net/core/sock_map.c:160 [inline] sock_map_unref+0x352/0x4d0 net/core/sock_map.c:182 __sock_map_delete net/core/sock_map.c:422 [inline] sock_map_delete_elem+0xc1/0x130 net/core/sock_map.c:448 bpf_prog_2c29ac5cdc6b1842+0x3a/0x220 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118 trace_kfree include/trace/events/kmem.h:118 [inline] kfree+0x1f3/0x220 mm/slub.c:4569 ida_alloc_range+0x987/0xa80 lib/idr.c:460 get_anon_bdev fs/super.c:1049 [inline] set_anon_super fs/super.c:1069 [inline] set_anon_super_fc+0x2c/0xb0 fs/super.c:1091 kernfs_set_super+0x69/0x80 fs/kernfs/mount.c:291 sget_fc+0x2b0/0x620 fs/super.c:548 kernfs_get_tree+0x1a5/0x770 fs/kernfs/mount.c:332 sysfs_get_tree+0x40/0x110 fs/sysfs/mount.c:31 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x2ba/0xb30 fs/namespace.c:3005 path_mount+0x671/0x1070 fs/namespace.c:3335 do_mount fs/namespace.c:3348 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3533 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3533 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f4988ec4ea9 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:00007f4987c380c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4988ff2f80 RCX: 00007f4988ec4ea9 RDX: 0000000020000280 RSI: 0000000020000180 RDI: 0000000000000000 RBP: 00007f4988f114a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4988ff2f80 R15: 00007fffa2c90628