rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=e31/1/0x4000000000000000 softirq=152246/152247 fqs=2100
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18379
(detected by 1, t=10506 jiffies, g=210313, q=1477)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18379 Comm: syz.4.13055 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:llist_add_batch+0x1/0xa0 lib/llist.c:28
Code: e5 f8 4c 89 33 4d 89 ee eb 05 e8 6a 25 96 fd 4c 89 f0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 53 25 96 fd eb e7 00 55 <41> 57 41 56 41 55 41 54 53 48 89 d3 49 89 f6 49 89 ff e8 38 25 96
RSP: 0018:ffffc90000007668 EFLAGS: 00000082
RAX: 1ffffffff17c6704 RBX: ffff8880b903b1f0 RCX: ffff88802bc63b80
RDX: ffff8880b9033d70 RSI: ffff8880b903b1f0 RDI: ffff8880b903b1f0
RBP: 0000000000000000 R08: ffff8880b903b1fb R09: 1ffff1101720763f
R10: dffffc0000000000 R11: ffffed1017207640 R12: 0000000000000000
R13: dffffc0000000001 R14: ffffffff8be33820 R15: dffffc0000000000
FS: 00007f8f89e3d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000007ab4f000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
llist_add include/linux/llist.h:219 [inline]
__irq_work_queue_local+0xad/0x190 kernel/irq_work.c:61
irq_work_queue_on+0x11e/0x220 kernel/irq_work.c:109
rcu_read_unlock_special+0x37b/0x4a0 kernel/rcu/tree_plugin.h:667
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
__perf_event_output kernel/events/core.c:7813 [inline]
perf_event_output_forward+0x255/0x2e0 kernel/events/core.c:7822
__perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
perf_tp_event+0x383/0xbf0 kernel/events/core.c:10047
perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:ffs arch/x86/include/asm/bitops.h:297 [inline]
RIP: 0010:handle_softirqs+0x1a9/0x830 kernel/softirq.c:564
Code: 24 78 44 89 64 24 28 0f b7 db 48 c7 c7 00 10 2a 8a e8 2b 89 73 08 65 66 c7 05 51 47 ba 7e 00 00 e8 9c 0e 36 00 fb 89 5c 24 34 ff ff ff ff 0f bc 44 24 34 41 89 c5 41 ff c5 0f 85 d2 00 00 00
RSP: 0018:ffffc90000007e20 EFLAGS: 00000282
RAX: f41d05fdda6f5d00 RBX: 0000000000000200 RCX: f41d05fdda6f5d00
RDX: dffffc0000000000 RSI: ffffffff8a2b2800 RDI: ffffffff8a79fe00
RBP: ffffc90000007f30 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: 000000000000000a
R13: 0000000000000000 R14: ffff88802bc63b80 R15: dffffc0000000000
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rcu_read_unlock_special+0x18/0x4a0 kernel/rcu/tree_plugin.h:625
Code: f7 e8 3c c5 58 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 a0 00 00 00 <65> 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 49 bd 00 00 00
RSP: 0018:ffffc9000331f820 EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffff88802bc63fbc RCX: 0000000000080000
RDX: ffffc90011f89000 RSI: 000000000000503f RDI: ffff88802bc63b80
RBP: ffffc9000331f900 R08: dffffc0000000000 R09: 1ffffffff203aa18
R10: dffffc0000000000 R11: fffffbfff203aa19 R12: 1ffff1100578c7f7
R13: 00000000000075ba R14: ffff88802bc63fc0 R15: dffffc0000000000
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
is_bpf_text_address+0x24f/0x270 kernel/bpf/core.c:727
kernel_text_address kernel/extable.c:151 [inline]
__kernel_text_address+0x9a/0x100 kernel/extable.c:105
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:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x9c/0xd0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3225 [inline]
slab_alloc mm/slub.c:3233 [inline]
kmem_cache_alloc+0x100/0x290 mm/slub.c:3238
sock_alloc_inode+0x17/0xb0 net/socket.c:305
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x5f/0x210 fs/inode.c:1001
sock_alloc net/socket.c:628 [inline]
__sock_create+0x129/0x900 net/socket.c:1459
sock_create net/socket.c:1551 [inline]
__sys_socket+0xe2/0x170 net/socket.c:1593
__do_sys_socket net/socket.c:1602 [inline]
__se_sys_socket net/socket.c:1600 [inline]
__x64_sys_socket+0x76/0x80 net/socket.c:1600
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8f8bbe3dd9
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:00007f8f89e3d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f8f8be5cfa0 RCX: 00007f8f8bbe3dd9
RDX: 0000000000000300 RSI: 0200000000000003 RDI: 0000000000000011
RBP: 00007f8f8bc79d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8f8be5d038 R14: 00007f8f8be5cfa0 R15: 00007ffe83e527e8
task:syz.4.13055 state:R running task stack:23824 pid:18379 ppid: 14428 flags:0x0000400c
Call Trace: