WARNING in batadv_mcast_mla

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: 923d, last: 908d

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in batadv_mcast_mla_update				75	896d	1031d	13/22	fixed on 2019/06/14 18:22
linux-4.19	WARNING in batadv_mcast_mla_update				2	889d	911d	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):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report
ci2-linux-4-14	2019/05/02 20:35	linux-4.14.y	1c046f373132	e9039493	.config	log	report
ci2-linux-4-14	2019/05/02 01:49	linux-4.14.y	fa5941f45d7e	7516d9fa	.config	log	report
ci2-linux-4-14	2019/04/26 06:52	linux-4.14.y	68d7a45eec10	b617407b	.config	log	report
ci2-linux-4-14	2019/04/22 10:40	linux-4.14.y	68d7a45eec10	0a77c33c	.config	log	report
ci2-linux-4-14	2019/04/18 05:23	linux-4.14.y	58b454ebf81e	b0e8efcb	.config	log	report