watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.3.526:2796]
Modules linked in:
CPU: 1 PID: 2796 Comm: syz.3.526 Tainted: G        W         5.10.218-syzkaller-00638-g3feee789f446 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:unwind_next_frame+0x328/0x700 arch/x86/kernel/unwind_frame.c:295
Code: 3c 10 00 74 08 4c 89 f7 e8 25 26 76 00 49 c7 06 00 00 00 00 b0 01 e9 8c 02 00 00 4d 8d 6e 50 4c 89 eb 48 c1 eb 03 80 3c 13 00 <74> 12 4c 89 ef e8 5e 25 76 00 48 ba 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffffc900001704b8 EFLAGS: 00000246
RAX: ffffc900019eff30 RBX: 1ffff9200002e0b2 RCX: 0000000000170501
RDX: dffffc0000000000 RSI: ffffffff83bdd124 RDI: ffffc900019eff48
RBP: ffffc90000170530 R08: ffffc90000170628 R09: 0000000000000006
R10: ffffc90000170630 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffc90000170590 R14: ffffc90000170540 R15: 1ffff9200002e0a8
FS:  00007f05aac306c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3101aff8 CR3: 000000012c979000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:121
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x121/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1595 [inline]
 slab_free_freelist_hook+0xc0/0x190 mm/slub.c:1621
 slab_free mm/slub.c:3203 [inline]
 kmem_cache_free+0xa9/0x1e0 mm/slub.c:3219
 kfree_skbmem+0x104/0x170
 __kfree_skb net/core/skbuff.c:695 [inline]
 kfree_skb+0xc1/0x320 net/core/skbuff.c:713
 ip6_mc_input+0x233/0x2a0 net/ipv6/ip6_input.c:574
 dst_input include/net/dst.h:443 [inline]
 ip6_rcv_finish+0x185/0x350 net/ipv6/ip6_input.c:80
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ipv6_rcv+0xee/0x270 net/ipv6/ip6_input.c:301
 __netif_receive_skb_one_core net/core/dev.c:5382 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5496
 process_backlog+0x31c/0x650 net/core/dev.c:6403
 napi_poll net/core/dev.c:6854 [inline]
 net_rx_action+0x516/0x10d0 net/core/dev.c:6924
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:5065
Code: 4c 89 e7 e8 a0 a0 f7 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 74 72 98 fc fb bf 01 00 00 00 <e8> 89 e6 ff ff fa bf 01 00 00 00 e8 fe 73 98 fc 65 48 8b 1d b6 cf
RSP: 0018:ffffc900019ef280 EFLAGS: 00000246
RAX: 1ffff11022f01b26 RBX: 1ffff9200033de54 RCX: ffffffff84b1c600
RDX: 1ffff11022f019e4 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc900019ef300 R08: ffffffff87081048 R09: ffffffff87081058
R10: ffffffff87081050 R11: ffffffff87081043 R12: ffffc900019ef2a0
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200033de50
 irqentry_exit_cond_resched kernel/entry/common.c:365 [inline]
 irqentry_exit+0x4f/0x60 kernel/entry/common.c:395
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:stack_trace_consume_entry+0x0/0x290 kernel/stacktrace.c:82
Code: ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 7b ff ff ff 48 89 df e8 90 89 4e 00 e9 6e ff ff ff e8 c6 8b 52 03 66 0f 1f 44 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 20 48 89 fb 48 ba
RSP: 0018:ffffc900019ef3f8 EFLAGS: 00000282
RAX: ffffffff81b1052f RBX: ffffc900019ef400 RCX: 00000000019ef401
RDX: 1ffff9200033de82 RSI: ffffffff81b1052f RDI: ffffc900019ef4e0
RBP: ffffc900019ef490 R08: ffffc900019ef4e8 R09: 0000000000000003
R10: ffffc900019ef4f0 R11: dffffc0000000001 R12: ffff88811780cf00
R13: ffffffff8159b490 R14: ffffc900019ef4e0 R15: 0000000000000000
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:121
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:463
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
 slab_alloc_node mm/slub.c:2947 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
 kmem_cache_zalloc include/linux/slab.h:654 [inline]
 lsm_file_alloc security/security.c:535 [inline]
 security_file_alloc+0x29/0x120 security/security.c:1444
 __alloc_file+0xbf/0x330 fs/file_table.c:106
 alloc_empty_file+0x95/0x180 fs/file_table.c:151
 path_openat+0x105/0x3000 fs/namei.c:3495
 do_filp_open+0x21c/0x460 fs/namei.c:3536
 do_sys_openat2+0x13f/0x6f0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_openat fs/open.c:1249 [inline]
 __se_sys_openat fs/open.c:1244 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1244
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f05ab9cfbd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05aac30048 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05abb5e038 RCX: 00007f05ab9cfbd9
RDX: 000000000000275a RSI: 00000000200001c0 RDI: ffffffffffffff9c
RBP: 00007f05aba3ee60 R08: 0000000000000000 R09: 0000000000000000
R10: 1800000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f05abb5e038 R15: 00007fffbcc15008
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2374 Comm: syz.4.464 Tainted: G        W         5.10.218-syzkaller-00638-g3feee789f446 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:check_preemption_disabled+0x4a/0x100 lib/smp_processor_id.c:54
Code: c7 55 7b 65 8b 05 52 23 56 7b a9 ff ff ff 7f 74 22 65 48 8b 04 25 28 00 00 00 48 3b 45 d8 0f 85 b0 00 00 00 89 d8 48 83 c4 10 <5b> 41 5c 41 5e 41 5f 5d c3 48 c7 45 d0 00 00 00 00 9c 8f 45 d0 f7
RSP: 0018:ffffc90000007330 EFLAGS: 00000086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff0e10200
RDX: 1ffffffff0e10200 RSI: ffffffff85601ea0 RDI: ffffffff85601e60
RBP: ffffc90000007350 R08: ffffffff87081008 R09: ffffffff87081018
R10: ffffffff87081010 R11: ffffffff87081003 R12: 00000133cb6273c1
R13: 0000000000000996 R14: ffff8881f70272d0 R15: ffff8881f70272c0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffbcc15208 CR3: 0000000142d02000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_smp_processor_id+0x17/0x20 lib/smp_processor_id.c:59
 irqtime_account_delta kernel/sched/cputime.c:40 [inline]
 irqtime_account_irq+0xc7/0x1d0 kernel/sched/cputime.c:73
 account_irq_exit_time include/linux/vtime.h:115 [inline]
 __irq_exit_rcu+0x1c/0x150 kernel/softirq.c:432
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_irq_work+0xbc/0xd0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:661
RIP: 0010:kmem_cache_alloc+0x1/0x2e0 mm/slub.c:2959
Code: 80 4c 24 01 08 eb 85 41 80 4c 24 02 20 e9 7a ff ff ff 41 80 4c 24 02 01 e9 6f ff ff ff 41 80 4c 24 01 04 e9 64 ff ff ff 90 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 20 41 89 f6 49 89 fc
RSP: 0018:ffffc900000074c0 EFLAGS: 00000202
RAX: 0000000000000501 RBX: ffff888107d9c900 RCX: ffff88812ff34f00
RDX: ffff88812ff34f00 RSI: 0000000000000a20 RDI: ffff888107d9c900
RBP: ffffc90000007528 R08: ffffffff83bdac82 R09: fffffbfff0da7fab
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000a20
R13: 0000000000000000 R14: 0000000000000a20 R15: 0000000000000088
 alloc_skb include/linux/skbuff.h:1126 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 __neigh_notify+0x7d/0x120 net/core/neighbour.c:3375
 neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:102
 neigh_del net/core/neighbour.c:198 [inline]
 neigh_remove_one+0x36b/0x3d0 net/core/neighbour.c:219
 neigh_forced_gc net/core/neighbour.c:252 [inline]
 neigh_alloc net/core/neighbour.c:430 [inline]
 ___neigh_create+0x484/0x1a10 net/core/neighbour.c:592
 __neigh_create+0x32/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x957/0x1850 net/ipv6/ip6_output.c:142
 __ip6_finish_output+0x5ec/0x780 net/ipv6/ip6_output.c:216
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:249
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x6e9/0xc00 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3963
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1789
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:64
Code: c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 <f3> aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01
RSP: 0018:ffffc9000160f830 EFLAGS: 00010207
RAX: dffffc00000000f8 RBX: 0000000000040000 RCX: 00000000000031c0
RDX: 0000000000040000 RSI: 00000000000000f8 RDI: fffff52000482040
RBP: ffffc9000160f848 R08: ffffffff81a2780e R09: fffff52000445200
R10: fffff520002c1efc R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc90002229000 R15: ffff888114739908
 kasan_poison_vmalloc include/linux/kasan.h:459 [inline]
 __vunmap+0x212/0x8f0 mm/vmalloc.c:2286
 __vfree mm/vmalloc.c:2349 [inline]
 vfree+0x5c/0x80 mm/vmalloc.c:2380
 kcov_put kernel/kcov.c:408 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:510
 __fput+0x309/0x760 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x129/0x190 kernel/task_work.c:165
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc83/0x2a50 kernel/exit.c:861
 do_group_exit+0x141/0x310 kernel/exit.c:983
 get_signal+0x10a0/0x1410 kernel/signal.c:2782
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x4e/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7fc3718adbd9
Code: Unable to access opcode bytes at RIP 0x7fc3718adbaf.
RSP: 002b:00007fc370aed048 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fc371a3c110 RCX: 00007fc3718adbd9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000006
RBP: 00007fc37191ce60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc371a3c110 R15: 00007ffcf3e48b08