------------[ cut here ]------------
WARNING: CPU: 0 PID: 16345 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 16345 Comm: syz.1.2996 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 90 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 8d 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: ffffffff81a0a790 RBX: 0000000000000000 RCX: ffff888029578000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000007157 R09: ffffc90000007124
R10: dffffc0000000000 R11: fffff52000000e2b R12: ffff888029579788
R13: ffffc90001126030 R14: ffffc90000006d88 R15: 0000000000000000
FS: 00007ff8b99c76c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb98483a08 CR3: 000000005793c000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 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+0x32/0xa3c
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:3256 [inline]
netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153
netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4186
__dev_queue_xmit+0x756/0x2f80 net/core/dev.c:4261
neigh_hh_output include/net/neighbour.h:493 [inline]
neigh_output include/net/neighbour.h:507 [inline]
ip6_finish_output2+0x1051/0x1510 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:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
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:preempt_count_add+0x5/0x190 kernel/sched/core.c:5499
Code: c1 03 38 c1 7c 97 48 8b 3c 24 e8 c6 e2 6b 00 eb 8c e9 f5 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 57 41 56 53 <49> bf 00 00 00 00 00 fc ff df 48 c7 c0 80 bf 2d 96 48 c1 e8 03 42
RSP: 0018:ffffc90002e8ec88 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90002e8ed68 RCX: 0000000080000001
RDX: dffffc0000000000 RSI: ffffffff81888294 RDI: 0000000000000001
RBP: ffffc90002e8edb0 R08: ffffc90002e8ee30 R09: 0000000000000009
R10: dffffc0000000000 R11: fffff520005d1db9 R12: ffffffff81888294
R13: ffffc90002e8f600 R14: dffffc0000000000 R15: 1ffff920005d1dad
unwind_next_frame+0xac/0x1d90 arch/x86/kernel/unwind_orc.c:433
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1710 [inline]
slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
slab_free mm/slub.c:3504 [inline]
kfree+0xef/0x2a0 mm/slub.c:4564
clear_jmp_history kernel/bpf/verifier.c:919 [inline]
free_verifier_state+0x19a/0x220 kernel/bpf/verifier.c:933
pop_stack+0x3bf/0x530 kernel/bpf/verifier.c:1032
do_check+0x8c12/0xeb00 kernel/bpf/verifier.c:11488
do_check_common+0xe82/0x16e0 kernel/bpf/verifier.c:13512
do_check_main kernel/bpf/verifier.c:13575 [inline]
bpf_check+0x9c84/0xf270 kernel/bpf/verifier.c:14146
bpf_prog_load+0xfec/0x1510 kernel/bpf/syscall.c:2354
__sys_bpf+0x532/0x6f0 kernel/bpf/syscall.c:4657
__do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
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: 0033:0x7ff8bb76ddd9
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:00007ff8b99c7028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff8bb9e6fa0 RCX: 00007ff8bb76ddd9
RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005
RBP: 00007ff8bb803d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff8bb9e7038 R14: 00007ff8bb9e6fa0 R15: 00007ffcda24d3b8
----------------
Code disassembly (best guess):
0: c1 03 38 roll $0x38,(%rbx)
3: c1 7c 97 48 8b sarl $0x8b,0x48(%rdi,%rdx,4)
8: 3c 24 cmp $0x24,%al
a: e8 c6 e2 6b 00 call 0x6be2d5
f: eb 8c jmp 0xffffff9d
11: e9 f5 fe ff ff jmp 0xffffff0b
16: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
1d: 00 00 00
20: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
25: 41 57 push %r15
27: 41 56 push %r14
29: 53 push %rbx
* 2a: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 <-- trapping instruction
31: fc ff df
34: 48 c7 c0 80 bf 2d 96 mov $0xffffffff962dbf80,%rax
3b: 48 c1 e8 03 shr $0x3,%rax
3f: 42 rex.X