cfg80211: Exceeded CRDA call max attempts. Not calling CRDA
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered forwarding state
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4259 at kernel/signal.c:341 task_participate_group_stop+0xee/0x100 kernel/signal.c:341()
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4259 Comm: 3 Not tainted 4.1.0-syzkaller #0
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4264 at kernel/signal.c:341 task_participate_group_stop+0xee/0x100 kernel/signal.c:341()
Modules linked in:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffffffff82b89210 ffff880211e2fc48 ffffffff8247bc7b 0000000000000032
 ffffffff82b87246 ffff880211e2fcc8 ffffffff82477ead ffff880211e2fc68
 ffffffff00000008 ffff880211e2fcd8 ffff880211e2fc78 ffffffff831d91c8
Call Trace:
 [<ffffffff8247bc7b>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff8247bc7b>] dump_stack+0x4c/0x65 lib/dump_stack.c:50
 [<ffffffff82477ead>] panic+0xcd/0x211 kernel/panic.c:111
 [<ffffffff8116a93b>] warn_slowpath_common+0xbb/0xc0 kernel/panic.c:442
 [<ffffffff8116a9e5>] warn_slowpath_null+0x15/0x20 kernel/panic.c:479
 [<ffffffff8117a1ee>] task_participate_group_stop+0xee/0x100 kernel/signal.c:341
 [<ffffffff8117be6c>] do_signal_stop+0x8c/0x2a0 kernel/signal.c:2065
 [<ffffffff8117e2b9>] get_signal+0x2b9/0xa10 kernel/signal.c:2242
 [<ffffffff8107b683>] do_signal+0x23/0xaf0 arch/x86/kernel/signal.c:690
 [<ffffffff8107c1a8>] do_notify_resume+0x58/0x70 arch/x86/kernel/signal.c:735
 [<ffffffff8248c3eb>] int_signal+0x12/0x17
CPU: 1 PID: 4264 Comm: 3 Not tainted 4.1.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffffffff82b89210 ffff8800b9d53cc8 ffffffff8247bc7b 0000000000000000
 0000000000000000 ffff8800b9d53d08 ffffffff8116a905 0000000000000001
 ffff88021648a4d0 ffff88021663a700 0000000000040000 0000000000000000
Call Trace:
 [<ffffffff8247bc7b>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff8247bc7b>] dump_stack+0x4c/0x65 lib/dump_stack.c:50
 [<ffffffff8116a905>] warn_slowpath_common+0x85/0xc0 kernel/panic.c:446
 [<ffffffff8116a9e5>] warn_slowpath_null+0x15/0x20 kernel/panic.c:479
 [<ffffffff8117a1ee>] task_participate_group_stop+0xee/0x100 kernel/signal.c:341
 [<ffffffff8117be6c>] do_signal_stop+0x8c/0x2a0 kernel/signal.c:2065
 [<ffffffff8117e2b9>] get_signal+0x2b9/0xa10 kernel/signal.c:2242
 [<ffffffff8107b683>] do_signal+0x23/0xaf0 arch/x86/kernel/signal.c:690
 [<ffffffff8107c1a8>] do_notify_resume+0x58/0x70 arch/x86/kernel/signal.c:735
 [<ffffffff8248c3eb>] int_signal+0x12/0x17
---[ end trace 55652d1e2e4efd51 ]---
Kernel Offset: disabled