RBP: 00007fe5b43e706b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe5b45d8128 R14: 00007fe5b45d8090 R15: 00007ffcf198e288
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.0.15474:652]
Modules linked in:
CPU: 0 PID: 652 Comm: syz.0.15474 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:find_stack lib/stackdepot.c:208 [inline]
RIP: 0010:__stack_depot_save+0x1bb/0x4c0 lib/stackdepot.c:305
Code: 0e 44 29 c6 31 f3 c1 c6 18 29 f3 4c 8b 3d e5 4c 96 04 41 89 de 41 81 e6 ff 0f 00 00 4f 8b 24 f7 4d 85 e4 74 5e 44 89 ee eb 09 <4d> 8b 24 24 4d 85 e4 74 50 41 39 5c 24 08 75 f0 45 39 6c 24 0c 75
RSP: 0018:ffffc90000007328 EFLAGS: 00000287
RAX: 0000000000000000 RBX: 000000006ab3c70e RCX: 0000000000000001
RDX: 0000000000000b20 RSI: 000000000000000f RDI: ffffc90000007390
RBP: ffffc90000007380 R08: 00000000a757aa7d R09: 0000000031b26c6e
R10: 0000000000000003 R11: 00000000afcac687 R12: ffff8881149ca850
R13: 000000000000000f R14: 000000000000070e R15: ffff88823ff00000
FS:  00007fe5b2d886c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcb0230bc0 CR3: 000000011ffdf000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kasan_save_stack mm/kasan/common.c:39 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc mm/kasan/common.c:509 [inline]
 __kasan_kmalloc+0xe6/0x100 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x19f/0x330 mm/slub.c:4038
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 neigh_alloc net/core/neighbour.c:439 [inline]
 ___neigh_create+0x6ec/0x1a70 net/core/neighbour.c:592
 __neigh_create+0x31/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x8fe/0x1540 net/ipv6/ip6_output.c:129
 __ip6_finish_output+0x5fd/0x790 net/ipv6/ip6_output.c:203
 ip6_finish_output+0x33/0x1e0 net/ipv6/ip6_output.c:213
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1fa/0x420 net/ipv6/ip6_output.c:236
 dst_output include/net/dst.h:451 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x721/0xbc0 net/ipv6/ndisc.c:513
 ndisc_send_rs+0x711/0x960 net/ipv6/ndisc.c:707
 addrconf_rs_timer+0x35a/0x600 net/ipv6/addrconf.c:3974
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1789
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x255/0x563 kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:generic_exec_single+0x152/0x370 kernel/smp.c:296
Code: c7 44 24 40 00 00 00 00 9c 8f 44 24 40 48 8b 5c 24 40 43 c6 44 3d 04 f8 fa 4c 89 f7 ff 54 24 10 48 89 5c 24 18 ff 74 24 18 9d <31> c0 e9 38 01 00 00 44 8b 3d a0 4c 69 05 44 89 f7 44 89 fe e8 25
RSP: 0018:ffffc90000e7fa60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000246 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc90000e7fb10 R08: ffffc90000e7ec97 R09: ffffc90000e7ec80
R10: dffffc0000000000 R11: fffff520001cfd93 R12: ffffc90000e7fb68
R13: 1ffff920001cff50 R14: ffffc90000e7fca0 R15: dffffc0000000000
 smp_call_function_single+0x1d9/0x490 kernel/smp.c:514
 task_function_call kernel/events/core.c:116 [inline]
 perf_install_in_context+0x4c7/0x770 kernel/events/core.c:2969
 __do_sys_perf_event_open kernel/events/core.c:12286 [inline]
 __se_sys_perf_event_open+0x1246/0x1b40 kernel/events/core.c:11878
 __x64_sys_perf_event_open+0xbf/0xd0 kernel/events/core.c:11878
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe5b4350159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe5b2d88028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fe5b45d8090 RCX: 00007fe5b4350159
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000001340
RBP: 00007fe5b43e706b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe5b45d8128 R14: 00007fe5b45d8090 R15: 00007ffcf198e288
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 24976 Comm: kworker/1:146 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: rcu_gp process_srcu
RIP: 0010:delay_tsc+0x5d/0xc0 arch/x86/lib/delay.c:79
Code: 90 49 89 d4 49 c1 e4 20 49 09 c4 4d 29 fc 49 39 dc 73 55 bf 01 00 00 00 e8 50 a1 e6 fe 65 8b 05 15 3c a4 7d 85 c0 74 1d f3 90 <bf> 01 00 00 00 e8 89 9f e6 fe e8 94 f7 1e 02 41 39 c6 75 0e 0f 01
RSP: 0018:ffffc90002c17b80 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 0000000000002afa RCX: 0000000000000000
RDX: 000000000000032e RSI: ffffffff85406a00 RDI: 00000000ffffffff
RBP: ffffc90002c17ba0 R08: ffffc90002c17bc7 R09: 1ffff92000582f78
R10: dffffc0000000000 R11: fffff52000582f79 R12: 0000000000000a5e
R13: 000000000005253b R14: 0000000000000001 R15: 0000032e355a2bce
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8cac38ce85 CR3: 000000000640f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 __delay arch/x86/lib/delay.c:203 [inline]
 __const_udelay+0x61/0x70 arch/x86/lib/delay.c:217
 try_check_zero+0x2dc/0x350 kernel/rcu/srcutree.c:708
 srcu_advance_state kernel/rcu/srcutree.c:1215 [inline]
 process_srcu+0x1bd/0xca0 kernel/rcu/srcutree.c:1310
 process_one_work+0x6fd/0xbc0 kernel/workqueue.c:2301
 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447
 kthread+0x324/0x3b0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298