RBP: 00007f4b5efb9f60 R08: 00007ffdcdbd40b0 R09: 00007f4b5e0ad6c0
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f4b5efb9f6c
R13: 000000000000000b R14: 00007ffdcdbb3520 R15: 00007ffdcdbb3608
watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz.4.950:2997]
Modules linked in:
CPU: 0 PID: 2997 Comm: syz.4.950 Not tainted 5.15.150-syzkaller-00330-g9044d25b8ff5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:unwind_next_frame+0x3af/0x700 arch/x86/kernel/unwind_frame.c:301
Code: eb 35 65 48 8b 05 c1 96 cd 7e 48 39 45 98 74 0b 48 8b 7d d0 e8 62 03 00 00 eb 1c 48 8b 5d d0 48 89 d8 48 c1 e8 03 80 3c 10 00 <74> 08 48 89 df e8 67 9a 7d 00 48 8b 03 4c 89 f7 48 89 45 d0 48 89
RSP: 0018:ffffc90000006df8 EFLAGS: 00000246
RAX: 1ffff92000152f04 RBX: ffffc90000a97820 RCX: 0000000000006e01
RDX: dffffc0000000000 RSI: ffffffff81ac000c RDI: ffffc90000a97f48
RBP: ffffc90000006e70 R08: ffffc90000006f68 R09: 000000000000002b
R10: ffffc90000006f70 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffc90000006ed0 R14: ffffc90000006e80 R15: 1ffff92000000dd0
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f51ebece5e8 CR3: 0000000129c32000 CR4: 00000000003506b0
DR0: 0000000020000300 DR1: 0000000020000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
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+0x126/0x160 mm/kasan/common.c:365
__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]
consume_skb+0xb4/0x250 net/core/skbuff.c:930
dummy_xmit+0x13f/0x1c0 drivers/net/dummy.c:64
__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_hh_output include/net/neighbour.h:501 [inline]
neigh_output include/net/neighbour.h:515 [inline]
ip6_finish_output2+0xf5e/0x16e0 net/ipv6/ip6_output.c:126
__ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197
ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230
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:509
ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3977
call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1427
expire_timers kernel/time/timer.c:1472 [inline]
__run_timers+0x72a/0xa10 kernel/time/timer.c:1743
run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1756
__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
sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5024
Code: 74 08 4c 89 ff e8 11 67 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 29 20 7c 03 fb 49 8d 9d 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 0f b6 04 30
RSP: 0018:ffffc90000a96fc0 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810de2edf8 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000a97010 R08: ffffffff8191cba9 R09: fffffbfff0e0cb73
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f70378c0
R13: ffff88810de2e2c0 R14: 1ffff1103ee07081 R15: ffff8881f7038408
context_switch kernel/sched/core.c:5155 [inline]
__schedule+0xcd4/0x1590 kernel/sched/core.c:6512
preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:6916
irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:392
irqentry_exit+0x30/0x40 kernel/entry/common.c:426
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:update_stack_state+0x295/0x460 arch/x86/kernel/unwind_frame.c:252
Code: 83 3e 00 48 8b 45 a8 4c 8b ad 78 ff ff ff 74 22 44 3b 7d a4 75 1c 48 3b 45 98 73 16 31 db 89 d8 48 81 c4 90 00 00 00 5b 41 5c <41> 5d 41 5e 41 5f 5d c3 4d 85 ed 4c 89 75 b0 74 77 49 bf 00 00 00
RSP: 0018:ffffc90000a972b8 EFLAGS: 00000282
RAX: 0000000000a97301 RBX: ffffc90000a97350 RCX: 1ffff92000152e77
RDX: 1ffff92000152e6e RSI: ffffc90000a97350 RDI: ffffc90000a973b8
RBP: ffffc90000a972d0 R08: dffffc0000000001 R09: ffffc90000a97360
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90000a973a0 R15: dffffc0000000000
__unwind_start+0x1f4/0x3a0 arch/x86/kernel/unwind_frame.c:397
unwind_start arch/x86/include/asm/unwind.h:60 [inline]
arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
save_stack+0xf6/0x1e0 mm/page_owner.c:139
__reset_page_owner+0x36/0x190 mm/page_owner.c:156
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1471 [inline]
free_pcp_prepare mm/page_alloc.c:1543 [inline]
free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3533
free_unref_page+0xe8/0x750 mm/page_alloc.c:3615
free_the_page mm/page_alloc.c:804 [inline]
__free_pages+0x61/0xf0 mm/page_alloc.c:5852
__vunmap+0x7bc/0x8f0 mm/vmalloc.c:2652
__vfree mm/vmalloc.c:2700 [inline]
vfree+0x7f/0xb0 mm/vmalloc.c:2731
kcov_put kernel/kcov.c:408 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:510
__fput+0x3fe/0x910 fs/file_table.c:280
____fput+0x15/0x20 fs/file_table.c:308
task_work_run+0x129/0x190 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xc48/0x2ca0 kernel/exit.c:878
do_group_exit+0x141/0x310 kernel/exit.c:1000
get_signal+0x7a3/0x1630 kernel/signal.c:2896
arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f4b5ee2bbd9
Code: Unable to access opcode bytes at RIP 0x7f4b5ee2bbaf.
RSP: 002b:00007f4b5e0ad0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f4b5efb9f68 RCX: 00007f4b5ee2bbd9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f4b5efb9f6c
RBP: 00007f4b5efb9f60 R08: 00007ffdcdbd40b0 R09: 00007f4b5e0ad6c0
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f4b5efb9f6c
R13: 000000000000000b R14: 00007ffdcdbb3520 R15: 00007ffdcdbb3608
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 43 Comm: kworker/u4:2 Not tainted 5.15.150-syzkaller-00330-g9044d25b8ff5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x848/0x9b0 kernel/smp.c:969
Code: 89 fe 83 e6 01 31 ff e8 76 a8 0a 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 07 e8 b1 a4 0a 00 eb 38 f3 90 42 0f b6 04 3b <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 95 a4 0a 00 eb e4 44
RSP: 0018:ffffc900002cf880 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff1103ee07af1 RCX: ffff8881055b62c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900002cf998 R08: ffffffff816592da R09: ffffed103ee271d3
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff8881f703d788 R14: ffff8881f7138e80 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd6464ae78 CR3: 000000000680f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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:1201 [inline]
text_poke_bp_batch+0x1c4/0x5d0 arch/x86/kernel/alternative.c:1392
text_poke_flush arch/x86/kernel/alternative.c:1560 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1567
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:298