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>