------------[ cut here ]------------
WARNING: CPU: 0 PID: 4273 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0xade/0x6d50 net/core/flow_dissector.c:1022
Modules linked in:
CPU: 0 PID: 4273 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__skb_flow_dissect+0xade/0x6d50 net/core/flow_dissector.c:1027
Code: c6 e8 f6 22 4f f9 85 db 0f 84 5b 06 00 00 80 3d 72 7e d9 05 01 0f 85 81 06 00 00 e8 7c 1f 4f f9 e9 e7 f9 ff ff e8 72 1f 4f f9 <0f> 0b e8 6b 0f fd 01 89 c3 31 ff 89 c6 e8 c0 22 4f f9 85 db 74 18
RSP: 0018:ffffc90000006820 EFLAGS: 00010246
RAX: ffffffff88330eae RBX: 0000000000000000 RCX: ffff88802c898000
RDX: 0000000000000100 RSI: ffffffff8adf5dc0 RDI: ffffffff8adf5d80
RBP: ffffc90000006de8 R08: dffffc0000000000 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: ffffffff8e217c3c
R13: 1ffffffff1c42f88 R14: ffffffff8e217c42 R15: dffffc0000000000
FS: 000055556f538500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5971556c8 CR3: 000000005cf92000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
skb_flow_dissect_flow_keys include/linux/skbuff.h:1531 [inline]
___skb_get_hash+0x55/0x6e0 net/core/flow_dissector.c:1713
__skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1778
skb_get_hash include/linux/skbuff.h:1573 [inline]
nft_trace_init+0x1e0/0x430 net/netfilter/nf_tables_trace.c:292
nft_do_chain+0x1612/0x16d0 net/netfilter/nf_tables_core.c:243
nft_do_chain_inet+0x25c/0x340 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb9/0x200 net/netfilter/core.c:614
nf_hook+0x224/0x390 include/linux/netfilter.h:257
__ip_local_out+0x49c/0x5d0 net/ipv4/ip_output.c:115
ip_local_out+0x26/0x120 net/ipv4/ip_output.c:124
iptunnel_xmit+0x4a1/0x880 net/ipv4/ip_tunnel_core.c:82
udp_tunnel_xmit_skb+0x22b/0x380 net/ipv4/udp_tunnel_core.c:172
tipc_udp_xmit+0x85d/0xb40 net/tipc/udp_media.c:198
tipc_bearer_xmit_skb+0x2a9/0x3f0 net/tipc/bearer.c:578
tipc_disc_timeout+0x5e1/0x740 net/tipc/discover.c:338
call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x56c/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x291/0x910 kernel/softirq.c:596
__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:lock_acquire+0xa/0x4a0 kernel/locking/lockdep.c:5644
Code: a8 3f 21 8e e8 57 62 6f 00 e9 29 fb ff ff 66 90 65 8b 05 c1 76 9e 7e a9 00 ff ff 00 0f 95 c0 c3 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 4c 89 4c 24 18 4c 89 44
RSP: 0018:ffffc90003d574b0 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffffffff81ddb9bd RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8cb2dc20
RBP: ffffc90003d574c8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff940002fccd1 R12: dffffc0000000000
R13: ffff88805cf99610 R14: 000000000005f99a R15: ffff88813fff9160
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:883 [inline]
pfn_valid+0xe9/0x420 include/linux/mmzone.h:1857
page_table_check_set+0x25/0x6d0 mm/page_table_check.c:108
page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
copy_present_pte mm/memory.c:1000 [inline]
copy_pte_range mm/memory.c:1091 [inline]
copy_pmd_range mm/memory.c:1177 [inline]
copy_pud_range mm/memory.c:1214 [inline]
copy_p4d_range mm/memory.c:1238 [inline]
copy_page_range+0x2586/0x3a60 mm/memory.c:1332
dup_mmap kernel/fork.c:703 [inline]
dup_mm kernel/fork.c:1548 [inline]
copy_mm+0xeb0/0x1680 kernel/fork.c:1597
copy_process+0x19a6/0x40c0 kernel/fork.c:2358
kernel_clone+0x24b/0x900 kernel/fork.c:2765
__do_sys_clone kernel/fork.c:2906 [inline]
__se_sys_clone kernel/fork.c:2890 [inline]
__x64_sys_clone+0x1a7/0x220 kernel/fork.c:2890
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: 0033:0x7fe5963c6b52
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffe8948ad90 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffe8948ad90 RCX: 00007fe5963c6b52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffe8948af1c R08: 0000000000000000 R09: 0000000000000001
R10: 000055556f5387d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 00000000000f63f6 R15: 00007ffe8948af70
----------------
Code disassembly (best guess), 4 bytes skipped:
0: e8 57 62 6f 00 call 0x6f625c
5: e9 29 fb ff ff jmp 0xfffffb33
a: 66 90 xchg %ax,%ax
c: 65 8b 05 c1 76 9e 7e mov %gs:0x7e9e76c1(%rip),%eax # 0x7e9e76d4
13: a9 00 ff ff 00 test $0xffff00,%eax
18: 0f 95 c0 setne %al
1b: c3 ret
1c: 55 push %rbp
1d: 48 89 e5 mov %rsp,%rbp
20: 41 57 push %r15
22: 41 56 push %r14
24: 41 55 push %r13
* 26: 41 54 push %r12 <-- trapping instruction
28: 53 push %rbx
29: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp
2d: 48 81 ec e0 00 00 00 sub $0xe0,%rsp
34: 4c 89 4c 24 18 mov %r9,0x18(%rsp)
39: 4c rex.WR
3a: 89 .byte 0x89
3b: 44 rex.R