------------[ cut here ]------------
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_check_unset include/linux/skbuff.h:1164 [inline], CPU#0: syz.3.3087/21555
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_set include/linux/skbuff.h:1211 [inline], CPU#0: syz.3.3087/21555
WARNING: ./include/linux/skbuff.h:1165 at nf_reject6_fill_skb_dst net/ipv6/netfilter/nf_reject_ipv6.c:264 [inline], CPU#0: syz.3.3087/21555
WARNING: ./include/linux/skbuff.h:1165 at nf_send_unreach6+0x828/0xa20 net/ipv6/netfilter/nf_reject_ipv6.c:401, CPU#0: syz.3.3087/21555
Modules linked in:
CPU: 0 UID: 0 PID: 21555 Comm: syz.3.3087 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:skb_dst_check_unset include/linux/skbuff.h:1164 [inline]
RIP: 0010:skb_dst_set include/linux/skbuff.h:1211 [inline]
RIP: 0010:nf_reject6_fill_skb_dst net/ipv6/netfilter/nf_reject_ipv6.c:264 [inline]
RIP: 0010:nf_send_unreach6+0x828/0xa20 net/ipv6/netfilter/nf_reject_ipv6.c:401
Code: 85 f6 74 0a e8 39 1b 6f f7 e9 c8 fc ff ff e8 2f 1b 6f f7 4c 8b 7c 24 18 e9 34 fa ff ff e8 20 1b 6f f7 eb 9b e8 19 1b 6f f7 90 <0f> 0b 90 e9 c7 fb ff ff 48 85 db 0f 84 81 00 00 00 4c 8d a4 24 20
RSP: 0018:ffffc90000007320 EFLAGS: 00010246
RAX: ffffffff8a51b3b7 RBX: ffff888035ff6b40 RCX: ffff888034ae1e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000074c8 R08: ffff88802d313b83 R09: 1ffff11005a62770
R10: dffffc0000000000 R11: ffffed1005a62771 R12: ffff88807e1ee101
R13: dffffc0000000001 R14: 1ffff11006bfed73 R15: 0000000000000000
FS: 00007fd3616ac6c0(0000) GS:ffff8881257c4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c328cd3 CR3: 0000000024472000 CR4: 00000000003526f0
Call Trace:
nft_reject_inet_eval+0x441/0x690 net/netfilter/nft_reject_inet.c:44
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x40c/0x1920 net/netfilter/nf_tables_core.c:285
nft_do_chain_inet+0x25d/0x340 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x206/0x3a0 include/linux/netfilter.h:316
__netif_receive_skb_one_core net/core/dev.c:5991 [inline]
__netif_receive_skb+0xd3/0x380 net/core/dev.c:6104
process_backlog+0x60e/0x14f0 net/core/dev.c:6456
__napi_poll+0xc4/0x360 net/core/dev.c:7506
napi_poll net/core/dev.c:7569 [inline]
net_rx_action+0x707/0xe30 net/core/dev.c:7696
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:102 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
RIP: 0010:unwind_next_frame+0x130e/0x2390 arch/x86/kernel/unwind_orc.c:494
Code: c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49
RSP: 0018:ffffc900021be5f8 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffffffff901cd960 RCX: dffffc0000000000
RDX: ffffffff901cd954 RSI: ffffffff90ab7834 RDI: ffffffff8c04e5a0
RBP: ffffffff901cd954 R08: 0000000000000013 R09: 0000000000000000
R10: ffffc900021be718 R11: ffffffff81ad6180 R12: ffffffff84abc52d
R13: ffffffff901cd954 R14: ffffc900021be6c8 R15: ffffffff901cd958
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559
slab_free_hook mm/slub.c:2378 [inline]
slab_free mm/slub.c:4680 [inline]
kmem_cache_free+0x2f6/0x400 mm/slub.c:4782
blk_update_request+0x57e/0xe60 block/blk-mq.c:989
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1151
>::end_ok rust/kernel/block/mq/request.rs:129 [inline]
::queue_rq drivers/block/rnull.rs:69 [inline]
>::queue_rq_callback+0x1b6/0x2a0 rust/kernel/block/mq/operations.rs:94
blk_mq_dispatch_rq_list+0x4bd/0x1900 block/blk-mq.c:2120
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline]
__blk_mq_sched_dispatch_requests+0xda4/0x1570 block/blk-mq-sched.c:307
blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329
blk_mq_run_hw_queue+0x404/0x4f0 block/blk-mq.c:2358
blk_mq_dispatch_list+0xd0c/0xe00 include/linux/spinlock.h:-1
blk_mq_flush_plug_list+0x469/0x550 block/blk-mq.c:2967
__blk_flush_plug+0x3d3/0x4b0 block/blk-core.c:1220
blk_finish_plug+0x5e/0x90 block/blk-core.c:1247
read_pages+0x3b2/0x580 mm/readahead.c:173
page_cache_ra_unbounded+0x6b0/0x7b0 mm/readahead.c:297
do_page_cache_ra mm/readahead.c:327 [inline]
force_page_cache_ra mm/readahead.c:356 [inline]
page_cache_sync_ra+0x3b9/0xb10 mm/readahead.c:572
filemap_get_pages+0x468/0x1de0 mm/filemap.c:2607
filemap_splice_read+0x581/0xc60 mm/filemap.c:2996
do_splice_read fs/splice.c:982 [inline]
splice_direct_to_actor+0x4a6/0xcc0 fs/splice.c:1086
do_splice_direct_actor fs/splice.c:1204 [inline]
do_splice_direct+0x181/0x270 fs/splice.c:1230
do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
__do_sys_sendfile64 fs/read_write.c:1431 [inline]
__se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd36078ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd3616ac038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd3609b5fa0 RCX: 00007fd36078ebe9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fd360811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3609b6038 R14: 00007fd3609b5fa0 R15: 00007ffc6eb95cc8
----------------
Code disassembly (best guess):
0: c1 e8 3f shr $0x3f,%eax
3: 48 01 c8 add %rcx,%rax
6: 48 83 e0 fe and $0xfffffffffffffffe,%rax
a: 4c 8d 3c 45 00 00 00 lea 0x0(,%rax,2),%r15
11: 00
12: 49 01 ef add %rbp,%r15
15: 4c 89 f8 mov %r15,%rax
18: 48 c1 e8 03 shr $0x3,%rax
1c: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
23: fc ff df
26: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 75 27 jne 0x55
2e: 49 63 07 movslq (%r15),%rax
31: 4c 01 f8 add %r15,%rax
34: 49 8d 4f 04 lea 0x4(%r15),%rcx
38: 4c 39 e0 cmp %r12,%rax
3b: 48 0f 46 e9 cmovbe %rcx,%rbp
3f: 49 rex.WB