BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking correctness validator.
CPU: 0 PID: 30812 Comm: syz-executor220 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
save_trace+0x85f/0xa80 kernel/locking/lockdep.c:547
check_prev_add kernel/locking/lockdep.c:3114 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x3b0b/0x7c60 kernel/locking/lockdep.c:5012
lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
htab_lock_bucket kernel/bpf/hashtab.c:183 [inline]
htab_lru_map_delete_elem+0x1b1/0x640 kernel/bpf/hashtab.c:1397
bpf_prog_6f5f05285f674219+0x3a/0xe1c
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
__traceiter_kfree+0x26/0x40 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x25f/0x2a0 mm/slub.c:4549
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x6fe/0x850 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb+0x4c/0x60 net/core/skbuff.c:756
tcp_clean_rtx_queue net/ipv4/tcp_input.c:3400 [inline]
tcp_ack+0x2086/0x6260 net/ipv4/tcp_input.c:3957
tcp_rcv_established+0xe7d/0x1c80 net/ipv4/tcp_input.c:5973
tcp_v4_do_rcv+0x44b/0x9b0 net/ipv4/tcp_ipv4.c:1731
tcp_v4_rcv+0x268f/0x2cb0 net/ipv4/tcp_ipv4.c:2143
ip_protocol_deliver_rcu+0x3ad/0x770 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x1d5/0x320 net/ipv4/ip_input.c:231
NF_HOOK+0x2d6/0x360 include/linux/netfilter.h:302
dst_input include/net/dst.h:462 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline]
ip_sublist_rcv+0xa1f/0xce0 net/ipv4/ip_input.c:636
ip_list_rcv+0x3df/0x430 net/ipv4/ip_input.c:671
__netif_receive_skb_list_ptype net/core/dev.c:5568 [inline]
__netif_receive_skb_list_core+0x574/0x740 net/core/dev.c:5616
__netif_receive_skb_list net/core/dev.c:5668 [inline]
netif_receive_skb_list_internal+0x871/0xb90 net/core/dev.c:5759
gro_normal_list net/core/dev.c:5913 [inline]
napi_complete_done+0x37d/0x830 net/core/dev.c:6651
virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
virtnet_poll+0x912/0xef0 drivers/net/virtio_net.c:1592
__napi_poll+0xc0/0x430 net/core/dev.c:7075
napi_poll net/core/dev.c:7142 [inline]
net_rx_action+0x4a8/0x9c0 net/core/dev.c:7232
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:finish_lock_switch+0x134/0x280 kernel/sched/core.c:4785
Code: be ff ff ff ff e8 2c 0e 4e 08 85 c0 74 4a 4d 85 ff 75 66 0f 1f 44 00 00 48 89 df e8 26 6a 57 08 e8 21 7f 2a 00 fb 48 83 c4 08 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 99 10 fe ff 43 80 3c
RSP: 0018:ffffc90002f8f5e8 EFLAGS: 00000286
RAX: e2f0a6c1b5fbee00 RBX: ffff8880b903a300 RCX: e2f0a6c1b5fbee00
RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59a740
RBP: 1ffff1101720760b R08: dffffc0000000000 R09: ffffed1017207461
R10: ffffed1017207461 R11: 1ffff11017207460 R12: 1ffff110172075b9
R13: dffffc0000000000 R14: ffff8880b903adc8 R15: 0000000000000000
finish_task_switch+0x12f/0x640 kernel/sched/core.c:4902
context_switch kernel/sched/core.c:5033 [inline]
__schedule+0x11c0/0x43b0 kernel/sched/core.c:6376
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6552
preempt_schedule+0xa7/0xb0 kernel/sched/core.c:6577
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
_raw_spin_unlock_irqrestore+0xf6/0x100 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
__wake_up_common_lock kernel/sched/wait.c:140 [inline]
__wake_up_sync_key+0x11b/0x180 kernel/sched/wait.c:205
pipe_write+0x1270/0x1a80 fs/pipe.c:598
call_write_iter include/linux/fs.h:2172 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0x712/0xd00 fs/read_write.c:594
ksys_write+0x14d/0x250 fs/read_write.c:647
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: 0033:0x7fa970d23a50
Code: 40 00 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d 51 96 08 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89
RSP: 002b:00007ffe30c5d9c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa970d23a50
RDX: 0000000000000012 RSI: 00007fa970d7b03b RDI: 0000000000000001
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffe30c5da30 R14: 00007ffe30c5da20 R15: 00007ffe30c5d9e4
----------------
Code disassembly (best guess):
0: be ff ff ff ff mov $0xffffffff,%esi
5: e8 2c 0e 4e 08 call 0x84e0e36
a: 85 c0 test %eax,%eax
c: 74 4a je 0x58
e: 4d 85 ff test %r15,%r15
11: 75 66 jne 0x79
13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
18: 48 89 df mov %rbx,%rdi
1b: e8 26 6a 57 08 call 0x8576a46
20: e8 21 7f 2a 00 call 0x2a7f46
25: fb sti
26: 48 83 c4 08 add $0x8,%rsp
* 2a: 5b pop %rbx <-- trapping instruction
2b: 41 5c pop %r12
2d: 41 5d pop %r13
2f: 41 5e pop %r14
31: 41 5f pop %r15
33: 5d pop %rbp
34: c3 ret
35: 48 89 df mov %rbx,%rdi
38: e8 99 10 fe ff call 0xfffe10d6
3d: 43 rex.XB
3e: 80 .byte 0x80
3f: 3c .byte 0x3c