watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.0.96:818]
Modules linked in:
CPU: 0 PID: 818 Comm: syz.0.96 Not tainted 6.1.93-syzkaller-00008-gd1f3a046a65d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:update_stack_state+0x292/0x460 arch/x86/kernel/unwind_frame.c:261
Code: 84 00 49 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
RSP: 0018:ffffc90000007660 EFLAGS: 00000286
RAX: 0000000000007701 RBX: ffffc90000007701 RCX: 1ffff92000000eef
RDX: 1ffff92000000ee6 RSI: ffffc90000007ad8 RDI: ffffc90000007778
RBP: ffffc90000007688 R08: ffffc90000007808 R09: 0000000000000000
R10: ffffc90000007810 R11: dffffc0000000001 R12: 1ffff92000000eec
R13: 0000000000000000 R14: ffffc90000007760 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4cf9051b8 CR3: 0000000133da7000 CR4: 00000000003506b0
DR0: 0000000400000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:315
 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:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:379 [inline]
 __kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:957 [inline]
 __kmalloc_node_track_caller+0xb3/0x1e0 mm/slab_common.c:977
 kmalloc_reserve net/core/skbuff.c:446 [inline]
 __alloc_skb+0x125/0x2d0 net/core/skbuff.c:515
 alloc_skb include/linux/skbuff.h:1290 [inline]
 ndisc_alloc_skb+0xf3/0x2d0 net/ipv6/ndisc.c:422
 ndisc_send_rs+0x264/0x5f0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3984
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1826
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
 handle_softirqs+0x1db/0x650 kernel/softirq.c:617
 __do_softirq kernel/softirq.c:655 [inline]
 invoke_softirq kernel/softirq.c:472 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:704
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:716
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:jhash2 include/linux/jhash.h:127 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:276 [inline]
RIP: 0010:__stack_depot_save+0x71/0x480 lib/stackdepot.c:444
Code: da 1c 05 00 0f 85 ed 03 00 00 47 8d 04 12 46 8d 24 d5 7b 71 f5 75 41 83 f8 04 72 73 41 89 d9 44 89 e6 44 89 e0 4c 89 fa 03 02 <03> 72 04 44 03 62 08 44 89 e7 c1 c7 04 44 29 e0 31 c7 41 01 f4 29
RSP: 0018:ffffc90001cef320 EFLAGS: 00000a17
RAX: 000000003e7e5f41 RBX: 00000000616af9a4 RCX: 00000000a56fb946
RDX: ffffc90001cef410 RSI: 00000000e4558c08 RDI: 00000000941cb329
RBP: ffffc90001cef380 R08: 0000000000000014 R09: 0000000000000000
R10: 0000000000000010 R11: dffffc0000000001 R12: 00000000dcb7f664
R13: 0000000000000001 R14: 0000000000002800 R15: ffffc90001cef3e0
 stack_depot_save+0x13/0x20 lib/stackdepot.c:533
 save_stack+0x104/0x1e0 mm/page_owner.c:148
 __reset_page_owner+0x54/0x190 mm/page_owner.c:168
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1498 [inline]
 free_pcp_prepare mm/page_alloc.c:1572 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
 free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594
 free_the_page mm/page_alloc.c:798 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5803
 __vunmap+0x9f3/0xb60 mm/vmalloc.c:2728
 __vfree mm/vmalloc.c:2776 [inline]
 vfree+0x5c/0x80 mm/vmalloc.c:2807
 kcov_put kernel/kcov.c:428 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:524
 __fput+0x3ab/0x870 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x24d/0x2e0 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xbd5/0x2b80 kernel/exit.c:875
 do_group_exit+0x21a/0x2d0 kernel/exit.c:1025
 get_signal+0x169d/0x1820 kernel/signal.c:2880
 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:316
 irqentry_exit+0x12/0x40 kernel/entry/common.c:419
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0033:0x7ffcc65eb811
Code: Unable to access opcode bytes at 0x7ffcc65eb7e7.
RSP: 002b:00007f69b17c2018 EFLAGS: 00000246
RAX: 000000006b38ca0e RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000041 RSI: 00007f69b17c20b0 RDI: 0000000000000001
RBP: 00007f69b17c2040 R08: 00007ffcc65e7080 R09: 00007ffcc65e70b0
R10: 0000000000005a88 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f69b0b35f80 R15: 00007ffcc65e1fd8
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 6.1.93-syzkaller-00008-gd1f3a046a65d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x60 kernel/kcov.c:225
Code: 0b 00 00 83 fa 02 75 21 48 8b 91 50 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 4c 0b 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 5d <c3> 66 90 55 48 89 e5 4c 8b 45 08 65 48 8b 15 00 c8 8c 7e 65 8b 05
RSP: 0018:ffffc90000087838 EFLAGS: 00000293
RAX: ffffffff816c09ec RBX: 1ffff1103edc7a99 RCX: ffff88810039e540
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000087958 R08: ffffffff816c09b5 R09: ffffed103ede71fb
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000800000000 R14: ffff8881f6e3d4c8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fadc2665000 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1166
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1334 [inline]
 text_poke_bp_batch+0x1e9/0x730 arch/x86/kernel/alternative.c:1534
 text_poke_flush arch/x86/kernel/alternative.c:1725 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1732
 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146
 __jump_label_update+0x36a/0x380 kernel/jump_label.c:455
 jump_label_update+0x3af/0x450 kernel/jump_label.c:801
 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/0x450 mm/kfence/core.c:804
 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>