watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.4.907:3275]
Modules linked in:
CPU: 0 PID: 3275 Comm: syz.4.907 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__read_once_size_nocheck+0x3/0x10 include/linux/compiler.h:286
Code: 80 e1 07 38 c1 0f 8c ae fc ff ff 48 89 df e8 d4 37 64 00 48 ba 00 00 00 00 00 fc ff df e9 97 fc ff ff e8 e0 07 0b 00 48 8b 07 <48> 89 06 c3 66 0f 1f 84 00 00 00 00 00 be 17 00 00 00 48 c7 c7 a0
RSP: 0018:ffff8881f6e08bf8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffffff83db0472 RBX: 1ffff1103edc11a8 RCX: 1ffff1103edc11e0
RDX: ffffffff86abc8f8 RSI: ffff8881f6e08d40 RDI: ffff8881f6e09a38
RBP: ffff8881f6e08ef0 R08: 0000000000000003 R09: ffff8881f6e08f50
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff0d5791f
R13: ffff8881f6e08d40 R14: ffff8881f6e09a38 R15: dffffc0000000000
FS:  00007fbfc3ccd6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfc4a6cd0f CR3: 00000001eda3c000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 deref_stack_reg arch/x86/kernel/unwind_orc.c:350 [inline]
 unwind_next_frame+0xfab/0x1ea0 arch/x86/kernel/unwind_orc.c:526
 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_set_free_info mm/kasan/common.c:345 [inline]
 __kasan_slab_free+0x1b5/0x270 mm/kasan/common.c:487
 slab_free_hook mm/slub.c:1455 [inline]
 slab_free_freelist_hook mm/slub.c:1494 [inline]
 slab_free mm/slub.c:3080 [inline]
 kfree+0x123/0x370 mm/slub.c:4071
 skb_release_all net/core/skbuff.c:675 [inline]
 __kfree_skb net/core/skbuff.c:689 [inline]
 kfree_skb+0xb8/0x3c0 net/core/skbuff.c:708
 ip6_tnl_start_xmit+0x12c0/0x1b50 net/ipv6/ip6_tunnel.c:1423
 __netdev_start_xmit include/linux/netdevice.h:4538 [inline]
 netdev_start_xmit include/linux/netdevice.h:4552 [inline]
 xmit_one net/core/dev.c:3221 [inline]
 dev_hard_start_xmit+0x1b7/0x6b0 net/core/dev.c:3237
 __dev_queue_xmit+0x14da/0x27e0 net/core/dev.c:3802
 neigh_output include/net/neighbour.h:518 [inline]
 ip6_finish_output2+0xf9e/0x18e0 net/ipv6/ip6_output.c:144
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1b3/0x430 net/ipv6/ip6_output.c:248
 dst_output include/net/dst.h:438 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0x702/0xc30 net/ipv6/ndisc.c:509
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3953
 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:538 [inline]
 smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
 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 3b eb 85 e8 75 12 43 fd 48 83 3d cd 2c 9a 01 00 74 29 48 89 df e8 e3 e7 fa fc 66 90 fb bf 01 00 00 00 <e8> 66 d4 f3 fc 65 8b 05 ab 7e b1 7b 85 c0 74 02 5b c3 e8 34 45 af
RSP: 0018:ffff8881e6a07190 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f6e57b40 RCX: dffffc0000000000
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8881e6a071f0 R08: ffffffff81799989 R09: fffffbfff0c96e5b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6e57b40
R13: ffff8881ece49f80 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:release_pages+0x35d/0xb20 mm/swap.c:802
Code: 48 83 e6 10 31 ff e8 32 f5 e1 ff 48 83 e3 10 0f 85 b5 00 00 00 e8 c3 f1 e1 ff 43 80 3c 34 00 0f 85 4e 05 00 00 e9 51 05 00 00 <e8> ae f1 e1 ff 49 be 00 00 00 00 00 fc ff df e9 82 00 00 00 e8 9a
RSP: 0018:ffff8881e6a07440 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff8881ece49f80 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881e6a07550 R08: ffffffff81824954 R09: fffff94000f6624f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881ccd8d010
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffea0007b31240
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:189 [inline]
 tlb_flush_mmu+0xc8/0x170 mm/mmu_gather.c:196
 zap_pte_range mm/memory.c:1173 [inline]
 zap_pmd_range mm/memory.c:1222 [inline]
 zap_pud_range mm/memory.c:1251 [inline]
 zap_p4d_range mm/memory.c:1272 [inline]
 unmap_page_range+0x1d29/0x2620 mm/memory.c:1293
 unmap_single_vma mm/memory.c:1338 [inline]
 unmap_vmas+0x355/0x4b0 mm/memory.c:1370
 exit_mmap+0x2bc/0x520 mm/mmap.c:3191
 __mmput+0x8e/0x2c0 kernel/fork.c:1101
 exit_mm kernel/exit.c:536 [inline]
 do_exit+0xc08/0x2bc0 kernel/exit.c:846
 do_group_exit+0x138/0x300 kernel/exit.c:982
 get_signal+0xdb1/0x1440 kernel/signal.c:2735
 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
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fbfc4a6cd39
Code: Bad RIP value.
RSP: 002b:00007fbfc3ccd0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007fbfc4bfb078 RCX: 00007fbfc4a6cd39
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fbfc4bfb078
RBP: 00007fbfc4bfb070 R08: 00007fbfc3ccd6c0 R09: 00007fbfc3ccd6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbfc4bfb07c
R13: 000000000000006e R14: 00007ffc26167d80 R15: 00007ffc26167e68
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1649 Comm: udevd Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:186
Code: 00 00 00 0f 1f 00 be 0c 00 00 00 48 c7 c7 a0 a7 f1 85 e8 3f de 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 54 51 9e 7e 65 8b 15 59 51 9e 7e f7 c2 00 01 1f 00 74
RSP: 0018:ffff8881e0537e18 EFLAGS: 00000a02
RAX: ffffffff816b7c7a RBX: ffff8881e0537f58 RCX: ffff8881cd182f40
RDX: 1ffff1103c0a6fc8 RSI: ffff8881e0537f58 RDI: ffffc90000032000
RBP: ffff8881e0537ec8 R08: ffffffff81006e88 R09: fffffbfff0c96d7e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000032000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881e0537e60
FS:  00007f9af51d1c80(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ba47ec000 CR3: 00000001ecd5b000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 bpf_trace_run2+0x7a/0x2d0 kernel/trace/bpf_trace.c:1379
 trace_sys_exit include/trace/events/syscalls.h:44 [inline]
 syscall_slow_exit_work+0x370/0x400 arch/x86/entry/common.c:234
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x19d/0x1c0 arch/x86/entry/common.c:300
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f9af5309457
Code: 73 01 c3 48 8b 0d d1 d9 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 e8 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 76 48 8b 15 a2 d9 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffc02d5b598 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 00007f9af5309457
RDX: 0000000000000004 RSI: 00007ffc02d5b5d8 RDI: 0000000000000005
RBP: 00007ffc02d5b5e4 R08: 0000000000000007 R09: a597d3881f8504be
R10: 00000000ffffffff R11: 0000000000000246 R12: 000055db12bfc3d0
R13: 00007ffc02d5b5d8 R14: 0000000000000001 R15: 000055db12bc32c0