watchdog: BUG: soft lockup - CPU#1 stuck for 223s! [syz.9.749:5064] Modules linked in: CPU: 1 PID: 5064 Comm: syz.9.749 Not tainted 5.15.167-syzkaller-android13-5.15.167_r00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:kasan_quarantine_put+0x53/0x1a0 mm/kasan/quarantine.c:234 Code: d0 4c 8b 7d d0 fa e8 1c 1d 2e 03 89 c0 48 8b 04 c5 20 18 26 86 80 b8 58 50 03 00 00 74 1b 41 f7 c7 00 02 00 00 74 01 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 8d 80 40 50 03 00 RSP: 0018:ffffc900001cffe0 EFLAGS: 00000206 RAX: ffff8881f7135001 RBX: ffff88812ae76dc0 RCX: ffff88811877e000 RDX: ffff88812ae76dc0 RSI: ffffffff85a339c0 RDI: ffffffff85a33980 RBP: ffffc900001d0010 R08: 0000000000000002 R09: 000000000000001c R10: ffffc900001cfd30 R11: dffffc0000000001 R12: 0000000000000000 R13: ffffffff81b1e786 R14: 000000000009b340 R15: 0000000000000286 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002005f000 CR3: 0000000006a0f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: <IRQ> ____kasan_slab_free+0x131/0x160 mm/kasan/common.c:367 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749 slab_free mm/slub.c:3519 [inline] kmem_cache_free+0x116/0x2e0 mm/slub.c:3535 kfree_skbmem+0x104/0x170 __kfree_skb net/core/skbuff.c:758 [inline] kfree_skb_reason net/core/skbuff.c:778 [inline] kfree_skb+0xc2/0x360 net/core/skbuff.c:792 ipip6_tunnel_xmit net/ipv6/sit.c:1047 [inline] sit_tunnel_xmit+0xf56/0x2440 net/ipv6/sit.c:1082 __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 __dev_queue_xmit+0x18b4/0x2e70 net/core/dev.c:4255 dev_queue_xmit+0x17/0x20 net/core/dev.c:4288 neigh_connected_output+0x417/0x450 net/core/neighbour.c:1533 neigh_output include/net/neighbour.h:517 [inline] ip6_finish_output2+0xf95/0x16f0 net/ipv6/ip6_output.c:130 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:201 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:211 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:234 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:511 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3979 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1457 expire_timers kernel/time/timer.c:1502 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1773 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1786 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565 __do_softirq kernel/softirq.c:603 [inline] invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:6916 Code: 4c 89 e7 e8 90 7c cd fc f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 34 2f 67 fc fb bf 01 00 00 00 <e8> e9 e3 ff ff fa bf 01 00 00 00 e8 be 30 67 fc 65 48 8b 1d 76 40 RSP: 0018:ffffc90000a97180 EFLAGS: 00000246 RAX: 1ffff110257a1b36 RBX: 1ffff92000152e34 RCX: ffffffff84e6ff00 RDX: 1ffff110257a19e5 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000a97208 R08: ffffffff874ce040 R09: ffffffff874ce048 R10: ffffffff874ce058 R11: ffffffff874ce050 R12: ffffc90000a971a0 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000152e30 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:398 irqentry_exit+0x30/0x40 kernel/entry/common.c:432 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:fsnotify_grab_connector fs/notify/mark.c:581 [inline] RIP: 0010:fsnotify_destroy_marks+0x127/0x4f0 fs/notify/mark.c:827 Code: 89 e6 e8 2c 62 a3 ff 41 83 fc 01 0f 87 65 03 00 00 e8 6d 5e a3 ff 48 c7 c7 80 c2 52 87 44 89 e6 e8 1e 1d 8f ff e9 0c 03 00 00 <e8> 54 5e a3 ff eb 05 e8 4d 5e a3 ff bf 02 00 00 00 44 89 e6 e8 f0 RSP: 0018:ffffc90000a97300 EFLAGS: 00000246 RAX: 1ffff11021f761d6 RBX: ffff88810fbb0eb0 RCX: ffffc90000a97303 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8752c358 RBP: ffffc90000a973a8 R08: dffffc0000000000 R09: ffffed103ee07182 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 1ffff92000152e64 R14: dffffc0000000000 R15: 0000000000000000 fsnotify_clear_marks_by_inode fs/notify/fsnotify.h:60 [inline] __fsnotify_inode_delete+0x1c/0x20 fs/notify/fsnotify.c:22 fsnotify_inode_delete include/linux/fsnotify.h:201 [inline] __destroy_inode+0x181/0x4e0 fs/inode.c:262 destroy_inode fs/inode.c:284 [inline] evict+0x7d6/0x930 fs/inode.c:637 iput_final fs/inode.c:1740 [inline] iput+0x63b/0x7e0 fs/inode.c:1766 dentry_unlink_inode+0x34e/0x430 fs/dcache.c:380 __dentry_kill+0x447/0x660 fs/dcache.c:586 shrink_dentry_list+0x35e/0x4b0 fs/dcache.c:1181 shrink_dcache_parent+0xc9/0x340 do_one_tree+0x27/0xe0 fs/dcache.c:1662 shrink_dcache_for_umount+0x7d/0x120 fs/dcache.c:1679 generic_shutdown_super+0x69/0x2e0 fs/super.c:447 kill_anon_super fs/super.c:1087 [inline] kill_litter_super+0x76/0xa0 fs/super.c:1096 deactivate_locked_super+0xad/0x110 fs/super.c:335 deactivate_super+0xbe/0xf0 fs/super.c:366 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150 task_work_run+0x129/0x190 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xc48/0x2ca0 kernel/exit.c:880 do_group_exit+0x141/0x310 kernel/exit.c:1002 get_signal+0x7a3/0x1630 kernel/signal.c:2904 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb5a4816719 Code: Unable to access opcode bytes at RIP 0x7fb5a48166ef. RSP: 002b:00007fb5a348f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00007fb5a49cdf80 RCX: 00007fb5a4816719 RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000003 RBP: 00007fb5a488932e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb5a49cdf80 R15: 00007fff94070fc8 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4288 Comm: kworker/u4:6 Not tainted 5.15.167-syzkaller-android13-5.15.167_r00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60 kernel/kcov.c:206 Code: f0 15 92 7e 65 8b 15 f1 15 92 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 5c 0b 00 00 00 74 2c 8b 91 38 0b 00 00 <83> fa 02 75 21 48 8b 91 40 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 3c RSP: 0018:ffffc900002df830 EFLAGS: 00000246 RAX: ffffffff8165b57b RBX: 1ffff1103ee2784d RCX: ffff88811013e2c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900002df830 R08: ffffffff8165b54a R09: ffffed103ee071d3 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8881f713c268 R14: ffff8881f7038e80 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f041a04970c CR3: 0000000006a0f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <NMI> </NMI> <TASK> csd_lock_wait kernel/smp.c:440 [inline] smp_call_function_many_cond+0x85b/0x9b0 kernel/smp.c:969 on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1135 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1207 [inline] text_poke_bp_batch+0x1db/0x720 arch/x86/kernel/alternative.c:1407 text_poke_flush arch/x86/kernel/alternative.c:1598 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1605 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x36a/0x380 kernel/jump_label.c:459 jump_label_update+0x3af/0x450 kernel/jump_label.c:830 static_key_enable_cpuslocked+0x12f/0x250 kernel/jump_label.c:177 static_key_enable+0x1a/0x30 kernel/jump_label.c:190 toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:729 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 </TASK>