------------[ cut here ]------------
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_check_unset include/linux/skbuff.h:1164 [inline], CPU#1: syz.5.692/8832
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_set include/linux/skbuff.h:1211 [inline], CPU#1: syz.5.692/8832
WARNING: ./include/linux/skbuff.h:1165 at nf_reject6_fill_skb_dst net/ipv6/netfilter/nf_reject_ipv6.c:264 [inline], CPU#1: syz.5.692/8832
WARNING: ./include/linux/skbuff.h:1165 at nf_send_unreach6+0x828/0xa20 net/ipv6/netfilter/nf_reject_ipv6.c:401, CPU#1: syz.5.692/8832
Modules linked in:
CPU: 1 UID: 0 PID: 8832 Comm: syz.5.692 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:ffffc90000a08320 EFLAGS: 00010246
RAX: ffffffff8a51b3b7 RBX: ffff888034f39b40 RCX: ffff88802e2cbc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a084c8 R08: ffff888077dd2a43 R09: 1ffff1100efba548
R10: dffffc0000000000 R11: ffffed100efba549 R12: ffff8880785da101
R13: dffffc0000000001 R14: 1ffff110069e7373 R15: 0000000000000000
FS: 00007f2cdeaea6c0(0000) GS:ffff8881258c4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555820c8808 CR3: 000000004a8ba000 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:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751
Code: 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 ff 05 40 3a 3e 11 e8 2b b5 de 09 <89> c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0
RSP: 0018:ffffc90003c864f8 EFLAGS: 00000282
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 7220ff7e8c27d600
RDX: 0000000000000000 RSI: ffffffff8c04e5e0 RDI: ffffffff8c04e5a0
RBP: ffffffff8173e1d5 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90003c866d8 R11: ffffffff81ad6180 R12: 0000000000000002
R13: ffffffff8e53bfe0 R14: 0000000000000000 R15: 0000000000000000
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x5f/0x360 kernel/locking/lockdep.c:5831
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x21c/0x3a0 mm/slub.c:4396
kmalloc_noprof include/linux/slab.h:909 [inline]
slab_free_hook mm/slub.c:2369 [inline]
slab_free mm/slub.c:4680 [inline]
kmem_cache_free+0x166/0x400 mm/slub.c:4782
__bio_chain_endio block/bio.c:319 [inline]
bio_endio+0x3f/0x870 block/bio.c:1634
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_order+0x8ca/0xd40 mm/readahead.c:512
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: 0033:0x7f2cddb8ebe9
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:00007f2cdeaea038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f2cdddc5fa0 RCX: 00007f2cddb8ebe9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f2cddc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007fffefff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2cdddc6038 R14: 00007f2cdddc5fa0 R15: 00007ffd450146d8
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax)
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: f3 0f 1e fa endbr64
19: 41 57 push %r15
1b: 41 56 push %r14
1d: 53 push %rbx
1e: 65 ff 05 40 3a 3e 11 incl %gs:0x113e3a40(%rip) # 0x113e3a65
25: e8 2b b5 de 09 call 0x9deb555
* 2a: 89 c3 mov %eax,%ebx <-- trapping instruction
2c: 83 f8 08 cmp $0x8,%eax
2f: 73 65 jae 0x96
31: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
38: fc ff df
3b: 4c rex.WR
3c: 8d .byte 0x8d
3d: 34 dd xor $0xdd,%al
3f: d0 .byte 0xd0