WARNING in batadv_mcast_mla_update

Status: auto-closed as invalid on 2019/10/25 08:48
Reported-by: syzbot+7d3e799c87a3e3d781ba@syzkaller.appspotmail.com
First crash: 2665d, last: 2651d
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in batadv_mcast_mla_update batman -1 75 2639d 2773d 12/29 fixed on 2019/06/14 18:22
linux-4.19 WARNING in batadv_mcast_mla_update -1 2 2631d 2654d 0/1 auto-closed as invalid on 2019/10/25 08:51

Sample crash report:
team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): Releasing backup interface bond_slave_1
bond0 (unregistering): Releasing backup interface bond_slave_0
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5 at net/batman-adv/multicast.c:315 batadv_mcast_mla_tt_add net/batman-adv/multicast.c:315 [inline]
WARNING: CPU: 1 PID: 5 at net/batman-adv/multicast.c:315 __batadv_mcast_mla_update net/batman-adv/multicast.c:578 [inline]
WARNING: CPU: 1 PID: 5 at net/batman-adv/multicast.c:315 batadv_mcast_mla_update+0x1599/0x1b00 net/batman-adv/multicast.c:603
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.115 #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_mcast_mla_update
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x438 kernel/panic.c:182
 __warn.cold+0x2f/0x34 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:batadv_mcast_mla_tt_add net/batman-adv/multicast.c:315 [inline]
RIP: 0010:__batadv_mcast_mla_update net/batman-adv/multicast.c:578 [inline]
RIP: 0010:batadv_mcast_mla_update+0x1599/0x1b00 net/batman-adv/multicast.c:603
RSP: 0018:ffff8880a9cd7bf8 EFLAGS: 00010297
RAX: ffff8880a9cc2140 RBX: ffff8880a9cd7cf0 RCX: 1ffff11015398541
RDX: 0000000000000000 RSI: ffff8880a9cc29e8 RDI: 0000000000000282
RBP: ffff8880a9cd7d38 R08: 00000000c6742b34 R09: ffff8880a9cc2a08
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a9cd7cf0
R13: ffff8880691d1ac0 R14: ffff8880691d2b44 R15: ffff8880a9cd7d10
 process_one_work+0x868/0x1610 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x31c/0x430 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/05/02 20:35 linux-4.14.y 1c046f373132 e9039493 .config console log report ci2-linux-4-14
2019/05/02 01:49 linux-4.14.y fa5941f45d7e 7516d9fa .config console log report ci2-linux-4-14
2019/04/26 06:52 linux-4.14.y 68d7a45eec10 b617407b .config console log report ci2-linux-4-14
2019/04/22 10:40 linux-4.14.y 68d7a45eec10 0a77c33c .config console log report ci2-linux-4-14
2019/04/18 05:23 linux-4.14.y 58b454ebf81e b0e8efcb .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.