Hello,
syzbot found the following issue on:
HEAD commit: d605f2f30d54 Merge 5.10.91 into android12-5.10-lts
git tree: android12-5.10-lts
console output:
https://syzkaller.appspot.com/x/log.txt?x=17658488700000
kernel config:
https://syzkaller.appspot.com/x/.config?x=21ff143efa71c71c
dashboard link:
https://syzkaller.appspot.com/bug?extid=e223cf47ec8ae183f2a0
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+e223cf...@syzkaller.appspotmail.com
skbuff: skb_over_panic: text:ffffffff843b368e len:76 put:20 head:ffff88810f4bf800 data:ffff88810f4bf840 tail:0x8c end:0x80 dev:syztnl0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:110!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 30841 Comm: kworker/0:5 Tainted: G W 5.10.91-syzkaller-00882-gd605f2f30d54 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 ac 8c 89 fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41
RSP: 0018:ffffc9000019f880 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff88810b0fc000 RCX: 8d17f0e992810500
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffffc9000019f8c8 R08: ffffffff81545408 R09: fffff52000033e39
R10: fffff52000033e39 R11: 0000000000000000 R12: ffff88810f4bf840
R13: 000000000000008c R14: 0000000000000080 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcc2ad5e998 CR3: 000000010a02e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
skb_over_panic+0x2c/0x30 net/core/skbuff.c:115
skb_put+0x205/0x210 net/core/skbuff.c:1877
add_grhead net/ipv6/mcast.c:1711 [inline]
add_grec+0xf5e/0x1370 net/ipv6/mcast.c:1838
mld_send_initial_cr+0x1f8/0x2c0 net/ipv6/mcast.c:2088
ipv6_mc_dad_complete+0x70/0x3b0 net/ipv6/mcast.c:2100
addrconf_dad_completed+0x664/0xdc0 net/ipv6/addrconf.c:4204
addrconf_dad_work+0xe4b/0x1d40 net/ipv6/addrconf.c:3989
process_one_work+0x6b4/0xfb0 kernel/workqueue.c:2289
worker_thread+0xb15/0x1600 kernel/workqueue.c:2435
kthread+0x371/0x390 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace 431ce05711da5883 ]---
RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 ac 8c 89 fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41
RSP: 0018:ffffc9000019f880 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff88810b0fc000 RCX: 8d17f0e992810500
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffffc9000019f8c8 R08: ffffffff81545408 R09: fffff52000033e39
R10: fffff52000033e39 R11: 0000000000000000 R12: ffff88810f4bf840
R13: 000000000000008c R14: 0000000000000080 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcc2ad5e998 CR3: 000000010a02e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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