syzbot


general protection fault in batadv_iv_ogm_schedule_buff
Status: fixed on 2020/07/08 19:03
Reported-by: syzbot+d04a9278e74682f55d80@syzkaller.appspotmail.com
Fix commit: e181bb93c904 batman-adv: Don't schedule OGM for disabled interface
First crash: 770d, last: 770d
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 general protection fault in batadv_iv_ogm_schedule_buff (2) 2 213d 257d 0/1 auto-closed as invalid on 2022/02/23 03:02
linux-4.14 general protection fault in batadv_iv_ogm_schedule_buff (2) 1 687d 687d 0/1 auto-closed as invalid on 2020/11/06 04:28
linux-4.19 general protection fault in batadv_iv_ogm_schedule_buff 6 801d 856d 1/1 fixed on 2020/07/08 18:45
upstream general protection fault in batadv_iv_ogm_schedule_buff 24 808d 831d 17/22 fixed on 2020/04/15 17:19
linux-4.14 general protection fault in batadv_iv_ogm_schedule_buff (3) 1 454d 454d 0/1 auto-closed as invalid on 2021/06/27 06:13
upstream general protection fault in batadv_iv_ogm_schedule_buff (2) 4 605d 688d 0/22 auto-closed as invalid on 2021/01/27 07:05

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7681 Comm: kworker/u4:6 Not tainted 4.14.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
task: ffff888098040040 task.stack: ffff88804fee8000
RIP: 0010:batadv_iv_ogm_schedule_buff+0x9ca/0xeb0 net/batman-adv/bat_iv_ogm.c:1015
RSP: 0018:ffff88804feefc40 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000000 RCX: 1ffff11013008126
RDX: 0000000000000000 RSI: ffff888098040938 RDI: 0000000000000070
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880868c6030 R14: ffffed101153a00e R15: ffff88808a9d0000
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d8770 CR3: 0000000096845000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1041 [inline]
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1034 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x500/0x6f0 net/batman-adv/bat_iv_ogm.c:1859
 process_one_work+0x813/0x1540 kernel/workqueue.c:2116
 worker_thread+0x5d1/0x1070 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 42 80 3c 20 00 0f 85 18 04 00 00 48 8b 1b 48 81 fb 40 4f 06 8b 0f 84 2f 01 00 00 e8 51 2b 35 fb 48 8d 7b 70 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 fa 03 00 00 41 80 3e 00 48 8b 6b 70 0f 85 
RIP: batadv_iv_ogm_schedule_buff+0x9ca/0xeb0 net/batman-adv/bat_iv_ogm.c:1015 RSP: ffff88804feefc40
---[ end trace efc43a74d0d7393e ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/04/17 08:29 linux-4.14.y c10b57a567e4 18397578 .config log report