Hello, syzbot found the following issue on: HEAD commit: 08c27f33 batman-adv: initialize "struct batadv_tvlv_tt_vla.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=111688fcd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=daeff30c2474a60f dashboard link: https://syzkaller.appspot.com/bug?extid=bf8b5834b7ec229487ce syz repro: https://syzkaller.appspot.com/x/repro.syz?x=176af0e2d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11fcb16ed00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bf8b5834b7ec229487ce@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 8389 at kernel/locking/mutex.c:931 __mutex_lock_common kernel/locking/mutex.c:931 [inline] WARNING: CPU: 0 PID: 8389 at kernel/locking/mutex.c:931 __mutex_lock+0xc0b/0x1120 kernel/locking/mutex.c:1096 Modules linked in: CPU: 1 PID: 8389 Comm: syz-executor116 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:931 [inline] RIP: 0010:__mutex_lock+0xc0b/0x1120 kernel/locking/mutex.c:1096 Code: 08 84 d2 0f 85 a3 04 00 00 8b 05 78 80 c0 04 85 c0 0f 85 12 f5 ff ff 48 c7 c6 20 8b 6b 89 48 c7 c7 e0 88 6b 89 e8 12 3d bd ff <0f> 0b e9 f8 f4 ff ff 65 48 8b 1c 25 00 f0 01 00 be 08 00 00 00 48 RSP: 0018:ffffc90001aaf3d8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801ac8d4c0 RSI: ffffffff815c4d15 RDI: fffff52000355e6d RBP: ffff888022324c90 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815bdaae R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc90001aaf8b0 R15: 0000000000000000 FS: 000000000082e300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000088 CR3: 0000000018643000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee802154_del_device+0x3f/0x70 net/mac802154/cfg.c:412 rdev_del_device net/ieee802154/rdev-ops.h:299 [inline] nl802154_del_llsec_dev+0x22f/0x310 net/ieee802154/nl802154.c:1767 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43fd19 Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcff3b4778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fd19 RDX: 0000000000040000 RSI: 00000000200002c0 RDI: 0000000000000004 RBP: 0000000000403780 R08: 0000000000000008 R09: 00000000004004a0 R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000403810 R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
