rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (1 GPs behind) idle=1a0c/1/0x4000000000000002 softirq=142017/142018 fqs=2100
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5868
(detected by 0, t=10506 jiffies, g=219457, q=1343 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5868 Comm: syz.1.9313 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__perf_output_begin kernel/events/ring_buffer.c:161 [inline]
RIP: 0010:perf_output_begin_forward+0x14a/0xa70 kernel/events/ring_buffer.c:272
Code: 24 e8 aa 9a d9 ff c6 05 20 f0 63 0c 01 48 c7 c7 20 c5 94 8a be 19 03 00 00 48 c7 c2 60 c5 94 8a e8 2b 16 bc ff ba 18 00 00 00 <48> 8d bc 24 a0 00 00 00 31 f6 e8 e7 c8 2a 00 48 8d bb e0 02 00 00
RSP: 0018:ffffc900001e05e0 EFLAGS: 00000046
RAX: ffffffff81a8933b RBX: ffff888034b81200 RCX: ffff88802a9bbc00
RDX: 0000000000000018 RSI: ffffffff8adf5dc0 RDI: ffffffff8adf5d80
RBP: ffffc900001e0710 R08: dffffc0000000000 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: 1ffff9200003c0cc
R13: ffffc900001e0760 R14: 0000000000000068 R15: 0000000000000001
FS: 00007f2ac1d226c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c39a8b2 CR3: 0000000030776000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__perf_event_output kernel/events/core.c:7732 [inline]
perf_event_output_forward+0x1ad/0x2f0 kernel/events/core.c:7750
__perf_event_overflow+0x457/0x630 kernel/events/core.c:9496
perf_swevent_overflow kernel/events/core.c:9579 [inline]
perf_swevent_event+0x315/0x570 kernel/events/core.c:9630
perf_tp_event+0x36b/0xc10 kernel/events/core.c:10064
perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10032
perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:319 [inline]
RIP: 0010:handle_softirqs+0x1b7/0x910 kernel/softirq.c:584
Code: 89 7c 24 2c 0f b7 db 48 c7 c7 80 0d 8b 8a e8 60 ee e0 08 65 66 c7 05 d6 62 b4 7e 00 00 e8 81 53 39 00 fb 49 c7 c5 c0 a0 80 8c <89> 5c 24 34 b8 ff ff ff ff 0f bc 44 24 34 41 89 c6 41 ff c6 0f 84
RSP: 0018:ffffc900001e0e20 EFLAGS: 00000282
RAX: 938e756563db8e00 RBX: 0000000000000200 RCX: 938e756563db8e00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf5de0
RBP: ffffc900001e0f30 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: dffffc0000000000
R13: ffffffff8c80a0c0 R14: ffff88802a9bbc00 R15: 000000000000000a
__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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:rcu_read_unlock_special+0x0/0x510 kernel/rcu/tree_plugin.h:630
Code: c6 68 66 00 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 94 49 89 fd 4c 89 f7 e8 ac 68 66 00 4c 89 ef eb 84 0f 1f 80 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 00
RSP: 0018:ffffc90003f578d8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88802a9bc03c RCX: 0000000000080000
RDX: ffffc90005439000 RSI: 000000000000743a RDI: ffff88802a9bbc00
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: 1ffff11005537807
R13: dffffc0000000000 R14: ffff88802a9bc040 R15: dffffc0000000000
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:823 [inline]
is_bpf_text_address+0x27a/0x2a0 kernel/bpf/core.c:737
kernel_text_address+0x9c/0xd0 kernel/extable.c:125
__kernel_text_address+0x9/0x30 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x4b/0x490 mm/slab.h:737
slab_alloc_node mm/slub.c:3359 [inline]
slab_alloc mm/slub.c:3367 [inline]
__kmem_cache_alloc_lru mm/slub.c:3374 [inline]
kmem_cache_alloc_lru+0x182/0x2e0 mm/slub.c:3390
alloc_inode_sb include/linux/fs.h:3245 [inline]
sock_alloc_inode+0x24/0xc0 net/socket.c:306
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x5f/0x1c0 fs/inode.c:1063
sock_alloc net/socket.c:631 [inline]
__sock_create+0x129/0x940 net/socket.c:1514
sock_create net/socket.c:1606 [inline]
__sys_socket_create net/socket.c:1643 [inline]
__sys_socket+0xc4/0x190 net/socket.c:1671
__do_sys_socket net/socket.c:1684 [inline]
__se_sys_socket net/socket.c:1682 [inline]
__x64_sys_socket+0x76/0x80 net/socket.c:1682
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: 0033:0x7f2ac0d9e019
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:00007f2ac1d22028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f2ac1025fa0 RCX: 00007f2ac0d9e019
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007f2ac0e3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2ac1026038 R14: 00007f2ac1025fa0 R15: 00007ffd1af82fe8
task:syz.1.9313 state:R running task stack:26640 pid:5868 ppid:3313 flags:0x0000400c
Call Trace: