skbuff: skb_under_panic: text:ffffffff8a25e838 len:112 put:40 head:ffff88805e4ed040 data:ffff88805e4ed028 tail:0x58 end:0x180 dev:team0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 10956 Comm: dhcpcd-run-hook Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 60 9c 6f 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 ce 6a f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000076e0 EFLAGS: 00010282
RAX: 0000000000000087 RBX: dffffc0000000000 RCX: 841562d4a8c02500
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000180 R08: ffffc90000007447 R09: 1ffff92000000e88
R10: dffffc0000000000 R11: fffff52000000e89 R12: ffff888026c5bc90
R13: ffff88805e4ed040 R14: ffff88805e4ed028 R15: 0000000000000058
FS: 0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005c6e4000 CR4: 00000000003526f0
Call Trace:
skb_under_panic net/core/skbuff.c:223 [inline]
skb_push+0xc3/0xe0 net/core/skbuff.c:2641
ip6gre_header+0xc8/0x790 net/ipv6/ip6_gre.c:1371
dev_hard_header include/linux/netdevice.h:3436 [inline]
neigh_connected_output+0x286/0x460 net/core/neighbour.c:1618
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
NF_HOOK include/linux/netfilter.h:318 [inline]
ndisc_send_skb+0xbce/0x1510 net/ipv6/ndisc.c:512
addrconf_rs_timer+0x369/0x6a0 net/ipv6/addrconf.c:4037
call_timer_fn+0x16e/0x590 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2373 [inline]
__run_timer_base+0x61a/0x860 kernel/time/timer.c:2385
run_timer_base kernel/time/timer.c:2394 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404
handle_softirqs+0x22b/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x60/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x18ef/0x23d0 arch/x86/kernel/unwind_orc.c:-1
Code: 89 da e8 84 0d 00 00 84 c0 0f 84 47 01 00 00 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 20 0f b6 04 28 84 c0 0f 85 17 08 00 00 01 8b 84 24 8c 00 00 00 41 39 06 4c 8b 7c 24 50 48 8b 7c 24 78
RSP: 0018:ffffc9000435f5d8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff90220984 RCX: 0000000000000001
RDX: ffffc9000435f6e8 RSI: dffffc0000000000 RDI: ffffc9000435fcb8
RBP: dffffc0000000000 R08: ffffc9000435fcb8 R09: 0000000000000000
R10: ffffc9000435f6f8 R11: fffff5200086bee1 R12: ffffc9000435f6f8
R13: 1ffff9200086bed7 R14: ffffc9000435f6a8 R15: 1ffffffff2044130
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
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:252 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2540 [inline]
slab_free mm/slub.c:6670 [inline]
kfree+0x1c0/0x660 mm/slub.c:6878
mte_destroy_walk lib/maple_tree.c:5049 [inline]
__mt_destroy+0x1c2/0x280 lib/maple_tree.c:6446
exit_mmap+0x67b/0xb10 mm/mmap.c:1312
__mmput+0x118/0x430 kernel/fork.c:1173
exit_mm+0x169/0x230 kernel/exit.c:581
do_exit+0x627/0x22f0 kernel/exit.c:959
do_group_exit+0x21c/0x2d0 kernel/exit.c:1112
__do_sys_exit_group kernel/exit.c:1123 [inline]
__se_sys_exit_group kernel/exit.c:1121 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121
x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f416b9fd6c5
Code: Unable to access opcode bytes at 0x7f416b9fd69b.
RSP: 002b:00007fff982f9238 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fff982f9504 RCX: 00007f416b9fd6c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
RBP: 0000000000000003 R08: 00007fff982f9330 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fff982f9570 R14: 00007f416bc0d000 R15: 000055bcde19cd98
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 60 9c 6f 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 ce 6a f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000076e0 EFLAGS: 00010282
RAX: 0000000000000087 RBX: dffffc0000000000 RCX: 841562d4a8c02500
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000180 R08: ffffc90000007447 R09: 1ffff92000000e88
R10: dffffc0000000000 R11: fffff52000000e89 R12: ffff888026c5bc90
R13: ffff88805e4ed040 R14: ffff88805e4ed028 R15: 0000000000000058
FS: 0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005c6e4000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 89 da mov %ebx,%edx
2: e8 84 0d 00 00 call 0xd8b
7: 84 c0 test %al,%al
9: 0f 84 47 01 00 00 je 0x156
f: 48 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%rbp
16: fc ff df
19: 48 8b 44 24 20 mov 0x20(%rsp),%rax
1e: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax
22: 84 c0 test %al,%al
24: 0f 85 17 08 00 00 jne 0x841
* 2a: b3 01 mov $0x1,%bl <-- trapping instruction
2c: 8b 84 24 8c 00 00 00 mov 0x8c(%rsp),%eax
33: 41 39 06 cmp %eax,(%r14)
36: 4c 8b 7c 24 50 mov 0x50(%rsp),%r15
3b: 48 8b 7c 24 78 mov 0x78(%rsp),%rdi