watchdog: BUG: soft lockup - CPU#1 stuck for 142s! [syz.2.601:4926]
Modules linked in:
CPU: 1 PID: 4926 Comm: syz.2.601 Tainted: G        W         5.15.167-syzkaller-02003-g5e4635681cf1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:stack_trace_consume_entry+0x11/0x290 kernel/stacktrace.c:83
Code: ff 48 89 df e8 60 31 53 00 e9 6e ff ff ff e8 96 4e 81 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 00 00 00 00 00 fc ff df 4c 8d 57 10 4d 89 d7 49 c1
RSP: 0018:ffffc900001d0148 EFLAGS: 00000286
RAX: ffffffff814315ce RBX: ffffc900001d01a0 RCX: 00000000001d0101
RDX: 1ffff9200003a036 RSI: ffffffff814315ce RDI: ffffc900001d0280
RBP: ffffc900001d0190 R08: ffffc900001d0288 R09: 000000000000000e
R10: ffffc900001d0290 R11: dffffc0000000001 R12: ffff888134794f00
R13: ffffffff815f77f0 R14: ffffc900001d0280 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc6104014b CR3: 0000000006a0f000 CR4: 00000000003506a0
DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x101/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 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:433 [inline]
 ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512
 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 __kmalloc+0x13a/0x270 mm/slub.c:4427
 kmalloc include/linux/slab.h:608 [inline]
 kzalloc include/linux/slab.h:733 [inline]
 neigh_alloc net/core/neighbour.c:438 [inline]
 ___neigh_create+0x6d0/0x1bd0 net/core/neighbour.c:591
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16f0 net/ipv6/ip6_output.c:127
 __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: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:ffffc90002387618 EFLAGS: 00000246
RAX: ffffffff81b79ab4 RBX: ffff888104648cc0 RCX: ffff888134794f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: ffffc90002387618 R08: ffffffff81b79a64 R09: 0000000000000010
R10: ffffc90002387450 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffea0004e61100 R14: dffffc0000000000 R15: 0000000000000000
 __reset_page_owner+0xb4/0x190 mm/page_owner.c:163
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5855
 __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:417 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:519
 __fput+0x228/0x8c0 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 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
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 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: 0033:0x7f6c65f7eff9
Code: Unable to access opcode bytes at RIP 0x7f6c65f7efcf.
RSP: 002b:00007f6c64bf8038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f6c66136f80 RCX: 00007f6c65f7eff9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007f6c65ff1296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6c66136f80 R15: 00007ffe0a1ad9e8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15 Comm: rcub/0 Tainted: G        W         5.15.167-syzkaller-02003-g5e4635681cf1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:pv_vcpu_is_preempted arch/x86/include/asm/paravirt.h:607 [inline]
RIP: 0010:vcpu_is_preempted arch/x86/include/asm/qspinlock.h:62 [inline]
RIP: 0010:rtmutex_spin_on_owner kernel/locking/rtmutex.c:1428 [inline]
RIP: 0010:rt_mutex_slowlock_block+0x360/0x5a0 kernel/locking/rtmutex.c:1560
Code: 70 ff ff ff 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 4d 89 e7 0f 85 86 00 00 00 44 8b 23 48 8b 85 78 ff ff ff 42 80 3c 38 00 <74> 0c 48 c7 c7 f0 59 ad 86 e8 92 4f cc fc 48 83 3d 1a 00 c7 01 00
RSP: 0018:ffffc900000f7bf0 EFLAGS: 00000246
RAX: 1ffffffff0d5ab3e RBX: ffff888134794f48 RCX: ffffffff84e6594b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888100273b40
RBP: ffffc900000f7c90 R08: dffffc0000000000 R09: ffffed102004e769
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff888100273b40 R14: ffffffff86bab4b8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc6103f3a0 CR3: 000000010c513000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1629 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1662 [inline]
 rt_mutex_slowlock+0x184/0x300 kernel/locking/rtmutex.c:1691
 __rt_mutex_lock kernel/locking/rtmutex.c:1703 [inline]
 __rt_mutex_lock_common kernel/locking/rtmutex_api.c:30 [inline]
 rt_mutex_lock+0x14a/0x210 kernel/locking/rtmutex_api.c:66
 rcu_boost kernel/rcu/tree_plugin.h:1060 [inline]
 rcu_boost_kthread+0x231/0x6e0 kernel/rcu/tree_plugin.h:1085
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 4926 Comm: syz.2.601 Tainted: G        W    L    5.15.167-syzkaller-02003-g5e4635681cf1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:199
Code: 00 00 00 0f 0b 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 14 3e b9 05 48 89 de e8 f4 8e 41 00 5b 5d c3 cc <55> 48 89 e5 48 8b 45 08 65 48 8b 0d f0 15 92 7e 65 8b 15 f1 15 92
RSP: 0018:ffffc90000007178 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88811fd51c60 RCX: ffff888134794f00
RDX: ffff888134794f00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000073d0 R08: ffffffff8195fa6c R09: ffffc90000007200
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000007688
R13: 1ffff92000000e38 R14: 0000000000000000 R15: ffff88811fd51cc0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9241e5c018 CR3: 000000013826f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x41a/0xad0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x40c/0xaa0 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__unwind_start+0x1/0x3a0 arch/x86/kernel/unwind_frame.c:365
Code: 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 5a fe ff ff e8 24 9c 7d 00 e9 50 fe ff ff e8 5a b9 ab 03 66 2e 0f 1f 84 00 00 00 00 00 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 48 48 89 4d d0 49 89
RSP: 0018:ffffc90000007730 EFLAGS: 00000246
RAX: ffff888134794f00 RBX: ffffc90000007830 RCX: ffffc900000077d0
RDX: 0000000000000000 RSI: ffff888134794f00 RDI: ffffc90000007740
RBP: ffffc900000077d0 R08: dffffc0000000000 R09: ffffc900000078c0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888134794f00
R13: ffffffff815f77f0 R14: ffffc90000007820 R15: 0000000000000000
 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
 __d_free+0x23/0x30 fs/dcache.c:273
 rcu_do_batch+0x57a/0xc10 kernel/rcu/tree.c:2523
 rcu_core+0x517/0x1020 kernel/rcu/tree.c:2763
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2776
 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:ffffc90002387160 EFLAGS: 00000246
RAX: 1ffff110268f2b36 RBX: 1ffff92000470e30 RCX: ffffffff84e6ff00
RDX: 1ffffffff0e99c00 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc900023871e8 R08: ffffffff874ce000 R09: ffffffff874ce008
R10: ffffffff874ce018 R11: ffffffff874ce010 R12: ffffc90002387180
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000470e2c
 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:398
 irqentry_exit+0x30/0x40 kernel/entry/common.c:432
 sysvec_call_function_single+0x52/0xb0 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x1b/0x20 arch/x86/include/asm/idtentry.h:646
RIP: 0010:unwind_done arch/x86/include/asm/unwind.h:46 [inline]
RIP: 0010:__unwind_start+0x318/0x3a0 arch/x86/kernel/unwind_frame.c:404
Code: 8b 4d b0 80 3c 01 00 48 8b 5d a8 74 08 48 89 df e8 2d 99 7d 00 48 8b 45 d0 48 39 03 73 43 48 8b 5d c0 48 89 df e8 48 ee ff ff <48> b8 00 00 00 00 00 fc ff df 48 8b 4d c8 0f b6 04 01 84 c0 75 0b
RSP: 0018:ffffc900023872e0 EFLAGS: 00000282
RAX: 0000000002387301 RBX: ffffc90002387360 RCX: 0000000002387301
RDX: 1ffff92000470e6e RSI: ffffc900023873f0 RDI: ffffc900023873b8
RBP: ffffc90002387350 R08: dffffc0000000001 R09: ffffc90002387360
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90002387370
R13: ffffc90002380000 R14: ffffc90002387368 R15: 1ffff92000470e6e
 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:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5855
 __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:417 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:519
 __fput+0x228/0x8c0 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 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
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 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: 0033:0x7f6c65f7eff9
Code: Unable to access opcode bytes at RIP 0x7f6c65f7efcf.
RSP: 002b:00007f6c64bf8038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f6c66136f80 RCX: 00007f6c65f7eff9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007f6c65ff1296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6c66136f80 R15: 00007ffe0a1ad9e8
 </TASK>