------------[ cut here ]------------
WARNING: CPU: 0 PID: 7138 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 7138 Comm: kworker/0:19 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events bpf_map_free_deferred
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 94 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 00 91 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000006d28 EFLAGS: 00010246
RAX: ffffffff81a08ea0 RBX: 0000000000000000 RCX: ffff88802a671dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000007157 R09: ffffc90000007124
R10: dffffc0000000000 R11: fffff52000000e2b R12: ffff88802a673548
R13: ffffc90001119030 R14: ffffc90000006d88 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c28bdc1 CR3: 000000005eeab000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_f2594087b0f175cc+0x32/0x778
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_prog_run_pin_on_cpu include/linux/filter.h:652 [inline]
bpf_flow_dissect+0x12b/0x3f0 net/core/flow_dissector.c:896
__skb_flow_dissect+0x792/0x60b0 net/core/flow_dissector.c:1024
skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1583
__skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1648
skb_get_hash include/linux/skbuff.h:1432 [inline]
skb_tx_hash net/core/dev.c:3243 [inline]
netdev_pick_tx+0x335/0xad0 net/core/dev.c:4140
netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4173
__dev_queue_xmit+0x756/0x2fd0 net/core/dev.c:4248
neigh_output include/net/neighbour.h:509 [inline]
ip6_finish_output2+0x108c/0x1510 net/ipv6/ip6_output.c:130
dst_output include/net/dst.h:452 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
ndisc_send_skb+0xc2a/0x1500 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x53a/0x7f0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__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:lockdep_unregister_key+0x4d3/0x520 kernel/locking/lockdep.c:6334
Code: 48 3b 84 24 80 00 00 00 75 39 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 89 3e 5e 08 41 f7 c4 00 02 00 00 74 90 fb 84 db <75> 8f eb a0 0f 0b e9 44 ff ff ff 0f 0b e9 b0 fe ff ff 0f 0b e9 fd
RSP: 0018:ffffc90002e3faa0 EFLAGS: 00000202
RAX: dffffc0000000000 RBX: ffff88801ecab301 RCX: d00290f8dedcd400
RDX: 0000000000000001 RSI: ffffffff8a2b3580 RDI: ffffffff8a79f780
RBP: ffffc90002e3fb80 R08: ffffffff90182aa7 R09: 1ffffffff2030554
R10: dffffc0000000000 R11: fffffbfff2030555 R12: 0000000000000206
R13: ffff88801ecab359 R14: ffffffff90181018 R15: 1ffff920005c7f58
htab_map_free+0x59a/0x5f0 kernel/bpf/hashtab.c:1483
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
----------------
Code disassembly (best guess):
0: 48 3b 84 24 80 00 00 cmp 0x80(%rsp),%rax
7: 00
8: 75 39 jne 0x43
a: 48 8d 65 d8 lea -0x28(%rbp),%rsp
e: 5b pop %rbx
f: 41 5c pop %r12
11: 41 5d pop %r13
13: 41 5e pop %r14
15: 41 5f pop %r15
17: 5d pop %rbp
18: c3 ret
19: e8 89 3e 5e 08 call 0x85e3ea7
1e: 41 f7 c4 00 02 00 00 test $0x200,%r12d
25: 74 90 je 0xffffffb7
27: fb sti
28: 84 db test %bl,%bl
* 2a: 75 8f jne 0xffffffbb <-- trapping instruction
2c: eb a0 jmp 0xffffffce
2e: 0f 0b ud2
30: e9 44 ff ff ff jmp 0xffffff79
35: 0f 0b ud2
37: e9 b0 fe ff ff jmp 0xfffffeec
3c: 0f 0b ud2
3e: e9 .byte 0xe9
3f: fd std