rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10501 ticks this GP) idle=979c/1/0x4000000000000000 softirq=11342/11342 fqs=5047
rcu: hardirqs softirqs csw/system
rcu: number: 1478441 0 0
rcu: cputime: 13665 38834 42 ==> 52510(ms)
rcu: (t=10502 jiffies g=9341 q=1029 ncpus=2)
CPU: 1 PID: 6136 Comm: syz.2.94 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:lock_acquire+0x235/0x420 kernel/locking/lockdep.c:5758
Code: 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 c0 00 00 00 0f 85 f9 00 00 00 48 8d 65 d8 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 0f 0b e9 59 fe ff ff 65 8b 05 4b 65
RSP: 0018:ffffc900001ef0b0 EFLAGS: 00000246
RAX: 433ec272ff91bd00 RBX: 00007efecc79acb9 RCX: 433ec272ff91bd00
RDX: 0000000000000000 RSI: ffffffff8acada80 RDI: ffffffff8b1c80e0
RBP: ffffc900001ef0d0 R08: dffffc0000000000 R09: 1ffffffff2237ca0
R10: dffffc0000000000 R11: fffffbfff2237ca1 R12: 1ffff9200003de04
R13: ffffffff8d131fe0 R14: 0000000000000246 R15: dffffc0000000000
FS: 00007efecd5d96c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000001 CR3: 0000000021ae3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
rcu_read_lock include/linux/rcupdate.h:786 [inline]
is_bpf_text_address+0x47/0x2a0 kernel/bpf/core.c:741
kernel_text_address+0xa0/0xd0 kernel/extable.c:125
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
slab_alloc_node mm/slub.c:3495 [inline]
kmem_cache_alloc_node+0x14c/0x320 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
alloc_skb include/linux/skbuff.h:1284 [inline]
alloc_skb_with_frags+0xca/0x7b0 net/core/skbuff.c:6334
sock_alloc_send_pskb+0x883/0x9a0 net/core/sock.c:2821
sock_alloc_send_skb include/net/sock.h:1953 [inline]
__ip_append_data+0x2ac1/0x3d40 net/ipv4/ip_output.c:1127
ip_append_data+0x10d/0x180 net/ipv4/ip_output.c:1370
icmp_push_reply+0x86/0x400 net/ipv4/icmp.c:380
__icmp_send+0x10b5/0x1420 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1263 [inline]
ipv4_link_failure+0x657/0xa40 net/ipv4/route.c:1270
dst_link_failure include/net/dst.h:437 [inline]
vti6_xmit net/ipv6/ip6_vti.c:547 [inline]
vti6_tnl_xmit+0x106a/0x1910 net/ipv6/ip6_vti.c:585
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3645 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3661
__dev_queue_xmit+0x1ac2/0x36b0 net/core/dev.c:4451
neigh_output include/net/neighbour.h:543 [inline]
ip_finish_output2+0xd3a/0x11e0 net/ipv4/ip_output.c:235
NF_HOOK_COND include/linux/netfilter.h:293 [inline]
ip_output+0x2a1/0x3b0 net/ipv4/ip_output.c:436
dst_output include/net/dst.h:467 [inline]
ip_local_out net/ipv4/ip_output.c:129 [inline]
__ip_queue_xmit+0x1049/0x1950 net/ipv4/ip_output.c:540
__tcp_transmit_skb+0x1cbd/0x32f0 net/ipv4/tcp_output.c:1422
tcp_transmit_skb net/ipv4/tcp_output.c:1440 [inline]
__tcp_retransmit_skb+0xa37/0x1500 net/ipv4/tcp_output.c:3373
tcp_retransmit_skb+0x32/0x360 net/ipv4/tcp_output.c:3396
tcp_retransmit_timer+0x19e9/0x3020 net/ipv4/tcp_timer.c:603
tcp_write_timer+0x12a/0x280 net/ipv4/tcp_timer.c:709
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 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+0xd3/0x190 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:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:212
Code: 00 0f 0b 0f 1f 80 00 00 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d fc c8 03 0d 48 89 de 5b e9 93 57 57 00 cc cc cc 0f 1e fa 48 8b 04 24 65 48 8b 0d 90 a2 7c 7e 65 8b 15 91 a2 7c
RSP: 0018:ffffc90005d9fcc0 EFLAGS: 00000246
RAX: 433ec272ff91bd00 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: ffffffff8e8ad9ef R09: 1ffffffff1d15b3d
R10: dffffc0000000000 R11: fffffbfff1d15b3e R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88805c98c800 R15: ffff88807cca52f8
arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
static_key_false include/linux/jump_label.h:207 [inline]
trace_timer_init include/trace/events/timer.h:33 [inline]
debug_init kernel/time/timer.c:826 [inline]
init_timer_key+0x4b/0x2a0 kernel/time/timer.c:869
sock_init_data_uid+0x74/0xc10 net/core/sock.c:3444
unix_create1+0xd9/0x790 net/unix/af_unix.c:1021
unix_create+0x154/0x1f0 net/unix/af_unix.c:1084
__sock_create+0x4a6/0x940 net/socket.c:1570
sock_create net/socket.c:1626 [inline]
__sys_socketpair+0x236/0x550 net/socket.c:1781
__do_sys_socketpair net/socket.c:1830 [inline]
__se_sys_socketpair net/socket.c:1827 [inline]
__x64_sys_socketpair+0x9b/0xb0 net/socket.c:1827
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efecc79acb9
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:00007efecd5d9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007efecca16090 RCX: 00007efecc79acb9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001
RBP: 00007efecc808bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efecca16128 R14: 00007efecca16090 R15: 00007fff5da13ae8