syzbot


BUG: unable to handle kernel paging request in ipv6_rcv

Status: auto-closed as invalid on 2021/02/28 11:07
Reported-by: syzbot+2609ff297e0c2b7d06b8@syzkaller.appspotmail.com
First crash: 614d, last: 614d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in ipv6_rcv 2 1161d 1178d 0/22 closed as invalid on 2019/05/15 23:07
upstream BUG: unable to handle kernel paging request in ipv6_rcv (2) 18 1114d 1138d 13/22 fixed on 2019/07/10 21:40

Sample crash report:
BTRFS info (device loop3): disk space caching is enabled
BTRFS error (device loop3): cannot mount because of unsupported optional features (800)
BTRFS error (device loop3): open_ctree failed
BUG: unable to handle kernel paging request at ffffe8ffba500008
IP: ipv6_rcv+0xca1/0x1bd0 net/ipv6/ip6_input.c:90
PGD 23f83e067 P4D 23f83e067 PUD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted 4.14.203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880b548e480 task.stack: ffff8880b54a0000
RIP: 0010:ipv6_rcv+0xca1/0x1bd0 net/ipv6/ip6_input.c:90
RSP: 0018:ffff8880b54a7a18 EFLAGS: 00010206
RAX: 0000000000000001 RBX: ffff88800012f6c0 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff885efce0 RDI: ffffffff885efce0
RBP: ffff8880a26b16c0 R08: ffffffff8650616f R09: 0000000000022012
R10: ffff8880b548ed30 R11: ffff8880b548e480 R12: ffff8880a26b1740
R13: 0000607f00000000 R14: ffff8880a26b16d0 R15: ffff88809d2308c0
FS:  0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffe8ffba500008 CR3: 0000000008e6a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474
 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512
 process_backlog+0x218/0x6f0 net/core/dev.c:5194
 napi_poll net/core/dev.c:5596 [inline]
 net_rx_action+0x466/0xfd0 net/core/dev.c:5662
 __do_softirq+0x254/0xa1d kernel/softirq.c:288
 run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670
 smpboot_thread_fn+0x5c1/0x920 kernel/smpboot.c:164
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 80 3c 02 00 0f 85 35 0c 00 00 48 c7 c7 e0 fc 5e 88 4c 8b ab e0 02 00 00 e8 ed 46 d1 fc 4c 8d a5 80 00 00 00 48 c7 c7 e0 fc 5e 88 <65> 49 ff 45 08 e8 d5 46 d1 fc 4c 89 e2 48 b8 00 00 00 00 00 fc 
RIP: ipv6_rcv+0xca1/0x1bd0 net/ipv6/ip6_input.c:90 RSP: ffff8880b54a7a18
CR2: ffffe8ffba500008
---[ end trace 2380397680b97d46 ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/10/31 11:07 linux-4.14.y 2b7915014161 8bc4594f .config log report info