rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2648 jiffies s: 156861 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1211 Comm: syz.4.8278 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hrtimer_get_softexpires_tv64 include/linux/hrtimer.h:295 [inline]
RIP: 0010:__hrtimer_run_queues+0x248/0xd50 kernel/time/hrtimer.c:1812
Code: 44 24 40 48 89 4c 24 08 48 c1 e9 03 48 89 4c 24 28 48 8b 9c 24 e0 00 00 00 4d 8d 74 24 20 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 f7 e8 6e 16 61 00 4d 8b 36 48 89 df 4c 89 f6 e8 90 10
RSP: 0018:ffffc90000007660 EFLAGS: 00000046
RAX: 1ffff1100e9b6330 RBX: 000001259d3a3e44 RCX: 1ffff110171c54ca
RDX: ffff8880b8e2a648 RSI: 0000000000000000 RDI: ffff8880b8e2a6a8
RBP: ffffc900000077b0 R08: ffffffff8e2029ef R09: 1ffffffff1c4053d
R10: dffffc0000000000 R11: fffffbfff1c4053e R12: ffff888074db1960
R13: dffffc0000000000 R14: ffff888074db1980 R15: ffff8880b8e2a640
FS: 00007fabfbdf46c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd623bea540 CR3: 000000005851c000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000008d24
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1877
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
__sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 82 30 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900000079e0 EFLAGS: 00000206
RAX: e9bb8333b189b200 RBX: 1ffff92000000f44 RCX: e9bb8333b189b200
RDX: dffffc0000000000 RSI: ffffffff8a8c1aa0 RDI: ffffffff8adf2060
RBP: ffffc90000007ae0 R08: ffffffff90aff377 R09: 1ffffffff215fe6e
R10: dffffc0000000000 R11: fffffbfff215fe6f R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:823 [inline]
ip_expire+0x457/0x770 net/ipv4/ip_fragment.c:201
call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:memcmp lib/string.c:772 [inline]
RIP: 0010:bcmp+0x31/0x220 lib/string.c:804
Code: 41 54 53 50 49 bf 00 00 00 00 00 fc ff df 48 83 fa 08 0f 82 50 01 00 00 48 89 f3 49 89 fe 4c 89 f0 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 6f 49 8d 46 07 48 89 c1 48 c1 e9 03 42 0f b6 0c 39 84 c9
RSP: 0018:ffffc9000f7af100 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff88807558d000 RCX: dffffc0000000000
RDX: 0000000000000060 RSI: ffff88807558d000 RDI: ffff888031886000
RBP: ffffc9000f7af410 R08: ffff88807558d2cf R09: 1ffff1100eab1a59
R10: dffffc0000000000 R11: ffffed100eab1a5a R12: ffff88807e051a00
R13: ffff888031886000 R14: ffff888031886000 R15: dffffc0000000000
memcmp include/linux/fortify-string.h:549 [inline]
states_maybe_looping kernel/bpf/verifier.c:12162 [inline]
is_state_visited kernel/bpf/verifier.c:12222 [inline]
do_check kernel/bpf/verifier.c:12461 [inline]
do_check_common+0x2bb9/0xc6d0 kernel/bpf/verifier.c:14943
do_check_main kernel/bpf/verifier.c:15006 [inline]
bpf_check+0xb08f/0x10db0 kernel/bpf/verifier.c:15583
bpf_prog_load+0x101a/0x1560 kernel/bpf/syscall.c:2651
__sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5031
__do_sys_bpf kernel/bpf/syscall.c:5135 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5133 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5133
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fabfaf9ce59
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:00007fabfbdf4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fabfb216270 RCX: 00007fabfaf9ce59
RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005
RBP: 00007fabfb032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fabfb216308 R14: 00007fabfb216270 R15: 00007fff655b0b78
</TASK>