watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [swapper/0:0]
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__read_once_size include/linux/compiler.h:268 [inline]
RIP: 0010:queued_write_lock_slowpath+0x180/0x390 kernel/locking/qrwlock.c:79
Code: 00 00 00 42 0f b6 04 33 84 c0 4c 8b 64 24 08 74 37 44 89 f9 80 e1 07 80 c1 03 38 c1 7c 2a 4c 89 ff e8 d4 d5 47 00 eb 20 f3 90 <42> 0f b6 04 33 84 c0 74 15 44 89 f9 80 e1 07 80 c1 03 38 c1 7c 08
RSP: 0018:ffff8881f6e09620 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: 00000000000001ff RBX: 1ffffffff0c80175 RCX: ffffffff814c5f1b
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff86400ba8
RBP: ffff8881f6e096d0 R08: dffffc0000000000 R09: fffffbfff0c80176
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1103edc12ce
R13: 00000000000000ff R14: dffffc0000000000 R15: ffffffff86400ba8
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fadda010c20 CR3: 00000001e5365000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 queued_write_lock include/asm-generic/qrwlock.h:95 [inline]
 __raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
 _raw_write_lock_bh+0x10a/0x170 kernel/locking/spinlock.c:319
 neigh_forced_gc net/core/neighbour.c:237 [inline]
 neigh_alloc net/core/neighbour.c:430 [inline]
 ___neigh_create+0x202/0x1ae0 net/core/neighbour.c:592
 ip6_finish_output2+0x8b1/0x1640 net/ipv6/ip6_output.c:126
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1b3/0x430 net/ipv6/ip6_output.c:233
 dst_output include/net/dst.h:438 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 mld_sendpack+0x606/0xb50 net/ipv6/mcast.c:1679
 mld_send_cr net/ipv6/mcast.c:1975 [inline]
 mld_ifc_timer_expire+0x814/0xc10 net/ipv6/mcast.c:2474
 call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
 expire_timers kernel/time/timer.c:1493 [inline]
 __run_timers+0x879/0xbe0 kernel/time/timer.c:1817
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:539 [inline]
 smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 db b0 da fd bf 01 00 00 00 89 c6 e8 3f 95 d1 fc 0f 1f 44 00 00 0f 00 2d 73 a4 4d 00 fb f4 <e8> bc b0 da fd bf ff ff ff ff 89 c6 e9 20 95 d1 fc 41 57 41 56 53
RSP: 0018:ffffffff85e07d18 EFLAGS: 000002d2 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff85e1adc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffffff85e07e20 R08: ffffffff8231cd01 R09: fffffbfff0bc35b9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff864c4d28
R13: ffffffff85e1adc0 R14: 1ffffffff0bc35b8 R15: 0000000000000000
 default_idle_call kernel/sched/idle.c:94 [inline]
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x248/0x660 kernel/sched/idle.c:264
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:356
 start_kernel+0x6d9/0x81d init/main.c:1036
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1732 Comm: syz.1.320 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:153 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x50 kernel/kcov.c:187
Code: 00 00 00 48 c7 c7 20 b1 f1 85 e8 5f e3 2f 00 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 04 24 65 48 8b 0d 74 42 9e 7e <65> 8b 15 79 42 9e 7e f7 c2 00 01 1f 00 74 01 c3 8b 91 00 0a 00 00
RSP: 0018:ffff8881f6f08d58 EFLAGS: 00000802
RAX: ffffffff8231ccde RBX: ffffffff85643f18 RCX: ffff8881e2beee40
RDX: 0000000000000504 RSI: ffffffff84fa5560 RDI: ffffffff84fa5520
RBP: ffff8881f6f08e10 R08: ffffffff8231cd01 R09: ffffffff86ead058
R10: ffffffff86ead043 R11: 1ffffffff0dd5a08 R12: ffffffff84fa5520
R13: 1ffff1103ede11b0 R14: ffff8881f6f58998 R15: ffffffff84fa5560
FS:  00007f39863dd6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3987d7313f CR3: 0000000005e0e000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 check_preemption_disabled+0x6e/0x320 lib/smp_processor_id.c:13
 rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:299 [inline]
 rcu_nmi_exit_common kernel/rcu/tree.c:652 [inline]
 rcu_irq_exit+0x72/0x250 kernel/rcu/tree.c:712
 exiting_irq arch/x86/include/asm/apic.h:539 [inline]
 smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:unwind_next_frame+0x72b/0x1ea0 arch/x86/kernel/unwind_orc.c:465
Code: 07 00 00 48 8b 04 24 48 8d 58 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 0e 48 89 df 49 89 d6 e8 cb 71 64 00 4c 89 f2 48 8b 03 <48> 89 44 24 08 49 8d 5d 01 4c 89 6c 24 10 49 c1 ed 03 43 0f b6 44
RSP: 0018:ffff8881f6f08f40 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff8881d226f9f8 RBX: ffff8881f6f09280 RCX: ffffffff8656bce0
RDX: ffffffff86843dee RSI: ffffffff86843dea RDI: 0000000000000001
RBP: ffff8881f6f09230 R08: 0000000000000001 R09: ffff8881f6f09290
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff0d087bd
R13: ffffffff86843dea R14: ffff8881f6f09278 R15: dffffc0000000000
 arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2829 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 __kmalloc_track_caller+0x100/0x2b0 mm/slub.c:4449
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xb4/0x4d0 net/core/skbuff.c:210
 alloc_skb include/linux/skbuff.h:1080 [inline]
 nlmsg_new include/net/netlink.h:888 [inline]
 __neigh_notify+0x7c/0x130 net/core/neighbour.c:3371
 neigh_cleanup_and_release+0x2b/0x210 net/core/neighbour.c:102
 neigh_del net/core/neighbour.c:198 [inline]
 neigh_remove_one+0x350/0x3b0 net/core/neighbour.c:219
 neigh_forced_gc net/core/neighbour.c:252 [inline]
 neigh_alloc net/core/neighbour.c:430 [inline]
 ___neigh_create+0x3b3/0x1ae0 net/core/neighbour.c:592
 ip6_finish_output2+0x8b1/0x1640 net/ipv6/ip6_output.c:126
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1b3/0x430 net/ipv6/ip6_output.c:233
 dst_output include/net/dst.h:438 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 mld_sendpack+0x606/0xb50 net/ipv6/mcast.c:1679
 mld_send_cr net/ipv6/mcast.c:1975 [inline]
 mld_ifc_timer_expire+0x814/0xc10 net/ipv6/mcast.c:2474
 call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
 expire_timers kernel/time/timer.c:1493 [inline]
 __run_timers+0x879/0xbe0 kernel/time/timer.c:1817
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:539 [inline]
 smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x45/0x60 kernel/locking/spinlock.c:199
Code: 08 00 74 0c 48 c7 c7 90 3c eb 85 e8 55 03 3d fd 48 83 3d ad 0a 94 01 00 74 29 48 89 df e8 a3 d5 f4 fc 66 90 fb bf 01 00 00 00 <e8> d6 bf ed fc 65 8b 05 8b 5b ab 7b 85 c0 74 02 5b c3 e8 14 22 a9
RSP: 0018:ffff8881d226f350 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f6f57b40 RCX: dffffc0000000000
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8881d226f3b0 R08: ffffffff8179a5d9 R09: fffffbfff0c98a83
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f57b40
R13: ffff8881e2beee40 R14: dffffc0000000000 R15: 0000000000000000
 finish_lock_switch kernel/sched/core.c:3347 [inline]
 finish_task_switch+0x130/0x590 kernel/sched/core.c:3447
 context_switch kernel/sched/core.c:3611 [inline]
 __schedule+0xb0d/0x1320 kernel/sched/core.c:4307
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:4558
 retint_kernel+0x1b/0x1b
RIP: 0010:__reset_page_owner+0x0/0x100 mm/page_owner.c:143
Code: cb ff e9 4f f9 ff ff e8 be a1 cb ff eb 0c e8 b7 a1 cb ff eb 05 e8 b0 a1 cb ff 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 <55> 41 57 41 56 41 55 41 54 53 41 89 f6 48 89 fb e8 8b a1 cb ff bf
RSP: 0018:ffff8881d226f600 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffffd4000f5e458 RBX: 1ffffd4000f5e45b RCX: dffffc0000000000
RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffffea0007af22c0
RBP: ffffea0007af22d8 R08: dffffc0000000000 R09: ffffed103d791800
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0007af22c0
R13: dffffc0000000000 R14: 00000000001ebc8b R15: ffffea0007af2288
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1176 [inline]
 free_pcp_prepare mm/page_alloc.c:1233 [inline]
 free_unref_page_prepare+0x297/0x380 mm/page_alloc.c:3085
 free_unref_page_list+0x10a/0x590 mm/page_alloc.c:3154
 release_pages+0xad8/0xb20 mm/swap.c:842
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:189 [inline]
 tlb_flush_mmu mm/mmu_gather.c:196 [inline]
 tlb_finish_mmu+0x177/0x320 mm/mmu_gather.c:277
 exit_mmap+0x2dc/0x520 mm/mmap.c:3193
 __mmput+0x8e/0x2c0 kernel/fork.c:1101
 exit_mm kernel/exit.c:538 [inline]
 do_exit+0xc08/0x2bc0 kernel/exit.c:848
 do_group_exit+0x138/0x300 kernel/exit.c:984
 get_signal+0xdb1/0x1440 kernel/signal.c:2738
 do_signal+0xb0/0x11f0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc0/0x1a0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x199/0x200 arch/x86/entry/common.c:194
 ret_from_intr+0x1c/0x1c
RIP: 0033:0x7f3987d73169
Code: Bad RIP value.
RSP: 002b:00007f39863dd038 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 00007f3987f8bfa0 RCX: 00007f3987d73169
RDX: 00004000000015c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f3987df42a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3987f8bfa0 R15: 00007ffc4857e9a8