rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (1 GPs behind) idle=00dc/1/0x4000000000000000 softirq=13766/13767 fqs=5185
rcu: hardirqs softirqs csw/system
rcu: number: 1322970 0 0
rcu: cputime: 18243 34236 65 ==> 52490(ms)
rcu: (t=10501 jiffies g=12425 q=1395 ncpus=2)
CPU: 0 PID: 6009 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:-1 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
RIP: 0010:unwind_next_frame+0x46d/0x2970 arch/x86/kernel/unwind_orc.c:494
Code: 4e 8d 24 ad 98 a8 56 8e 44 29 ed 49 8d 5c ac fc 49 39 dc 76 0d e8 63 03 4b 00 4d 29 e4 e9 a4 00 00 00 4c 89 e5 4c 89 64 24 28 <48> ba 00 00 00 00 00 fc ff df 4c 8b 74 24 48 48 89 d8 4c 29 e0 48
RSP: 0018:ffffc900000071f0 EFLAGS: 00000287
RAX: ffffffff813aa5f2 RBX: ffffffff8e596130 RCX: 0000000000000100
RDX: ffff888031845a00 RSI: 000000000000ae20 RDI: 000000000000ae27
RBP: ffffffff8e596118 R08: ffff888031845a00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff8e596118
R13: 000000000000ae20 R14: ffffc9000000735d R15: 0000000000003212
FS: 000055558b54b500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d463fff CR3: 0000000075b3d000 CR4: 00000000003506f0
Call Trace:
__unwind_start+0x66a/0x7e0 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xf8/0x190 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
____kasan_kmalloc mm/kasan/common.c:375 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:384
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
ref_tracker_alloc+0x134/0x460 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4110 [inline]
netdev_hold include/linux/netdevice.h:4139 [inline]
dst_init+0xd9/0x460 net/core/dst.c:52
dst_alloc+0x12e/0x170 net/core/dst.c:93
ip6_dst_alloc net/ipv6/route.c:344 [inline]
icmp6_dst_alloc+0x7b/0x400 net/ipv6/route.c:3316
ndisc_send_skb+0x419/0x14b0 net/ipv6/ndisc.c:493
addrconf_rs_timer+0x2bc/0x600 net/ipv6/addrconf.c:4024
call_timer_fn+0x16e/0x530 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x52d/0x7d0 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:generic_exec_single+0x476/0x4f0 kernel/smp.c:418
Code: 75 11 e8 ed e8 0a 00 48 85 db 75 16 e8 e3 e8 0a 00 eb 15 e8 dc e8 0a 00 e8 27 45 ed 08 48 85 db 74 ea e8 cd e8 0a 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 66 43 c7 44 2c
RSP: 0018:ffffc900049af860 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff888031845a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900049af930 R08: ffffffff90d96617 R09: 1ffffffff21b2cc2
R10: dffffc0000000000 R11: fffffbfff21b2cc3 R12: 1ffff92000935f10
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000935f31
smp_call_function_single+0x352/0x580 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
event_function_call+0x31f/0x5f0 kernel/events/core.c:305
_perf_event_period kernel/events/core.c:5904 [inline]
_perf_ioctl kernel/events/core.c:5973 [inline]
perf_ioctl+0x1fff/0x2440 kernel/events/core.c:6074
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7faaef78f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff3b83e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faaef9e5fa0 RCX: 00007faaef78f749
RDX: 0000200000000240 RSI: 0000000040082404 RDI: 0000000000000004
RBP: 00007faaef813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faaef9e5fa0 R14: 00007faaef9e5fa0 R15: 0000000000000003