rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10497 ticks this GP) idle=4e7c/1/0x4000000000000000 softirq=17191/17191 fqs=5246
rcu: hardirqs softirqs csw/system
rcu: number: 1374952 0 0
rcu: cputime: 17424 35065 65 ==> 52510(ms)
rcu: (t=10503 jiffies g=20161 q=1596 ncpus=2)
CPU: 0 PID: 7076 Comm: syz.1.357 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:444 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x5a/0xb0 kernel/rcu/tree.c:700
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 1c 62 6e 00 48 c7 c3 28 6b 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 2f 8b 03 65 ff 0d 21 da 92 7e 74 0c 83 e0 04 c1 e8 02 5b
RSP: 0018:ffffc900000075a0 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff8880b8e36b28 RCX: d192c2719e67db00
RDX: 0000000000000000 RSI: ffffffff8b1c81c0 RDI: ffffffff8b1c8180
RBP: ffffc900000076d0 R08: ffffffff8e8add2f R09: 1ffffffff1d15ba5
R10: dffffc0000000000 R11: fffffbfff1d15ba6 R12: ffffffff843072cb
R13: dffffc0000000000 R14: ffffffff8ca72a30 R15: dffffc0000000000
FS: 00007f5d906056c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000002e2d0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb5/0x8c0 kernel/locking/lockdep.c:5765
debug_objects_fill_pool+0xcc/0x730 lib/debugobjects.c:617
debug_object_assert_init+0x66/0x2f0 lib/debugobjects.c:894
debug_timer_assert_init kernel/time/timer.c:792 [inline]
debug_assert_init kernel/time/timer.c:837 [inline]
__timer_delete+0x3f/0x290 kernel/time/timer.c:1321
del_timer include/linux/timer.h:213 [inline]
sk_stop_timer+0x1b/0x90 net/core/sock.c:3427
inet_csk_clear_xmit_timers+0x64/0xb0 net/ipv4/inet_connection_sock.c:774
tcp_clear_xmit_timers include/net/tcp.h:657 [inline]
tcp_v4_destroy_sock+0x16b/0x6f0 net/ipv4/tcp_ipv4.c:2318
inet_csk_destroy_sock+0x160/0x390 net/ipv4/inet_connection_sock.c:1239
tcp_done_with_error+0x4b/0xc0 net/ipv4/tcp_input.c:4447
tcp_write_err net/ipv4/tcp_timer.c:72 [inline]
tcp_write_timeout net/ipv4/tcp_timer.c:281 [inline]
tcp_retransmit_timer+0x1728/0x3020 net/ipv4/tcp_timer.c:576
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:generic_exec_single+0x481/0x4f0 kernel/smp.c:418
Code: 75 11 e8 02 02 0b 00 48 85 db 75 16 e8 f8 01 0b 00 eb 15 e8 f1 01 0b 00 e8 bc 39 08 09 48 85 db 74 ea e8 e2 01 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc9000c61fa00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000ce19000 RSI: 0000000000002063 RDI: 0000000000002064
RBP: ffffc9000c61fad0 R08: ffffffff911bf5ff R09: 1ffffffff2237ebf
R10: dffffc0000000000 R11: fffffbfff2237ec0 R12: 1ffff920018c3f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920018c3f65
smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5be/0x920 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12915 [inline]
__se_sys_perf_event_open+0x1836/0x1c50 kernel/events/core.c:12567
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: 0033:0x7f5d8f79aeb9
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:00007f5d90605028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f5d8fa15fa0 RCX: 00007f5d8f79aeb9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f5d8f808c1f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d8fa16038 R14: 00007f5d8fa15fa0 R15: 00007ffeff1a1ae8