bisecting fixing commit since 2965db2e004cf9c92b87c1f559e9812c0ae878c1
building syzkaller on 36c88236dfc6146c2c536718c8930886cf31adbe
testing commit 2965db2e004cf9c92b87c1f559e9812c0ae878c1 with gcc (GCC) 8.4.1 20210217
kernel signature: 00b5a494d814b11599113152145aaf0cd8be23e37455b3502ba1ec4fe4147cc1
all runs: crashed: INFO: trying to register non-static key in ieee802154_del_device
testing current HEAD 1e986fe9ad15b8406034c504afc5ae76f0a8e852
testing commit 1e986fe9ad15b8406034c504afc5ae76f0a8e852 with gcc (GCC) 8.4.1 20210217
kernel signature: c41f82025e50d40a7abd83df4ed0b1c49afc415ac31e92bba1ee7d83e83f2fdf
all runs: crashed: INFO: trying to register non-static key in ieee802154_del_device
revisions tested: 2, total time: 25m32.332823867s (build: 18m23.647103569s, test: 6m44.980328161s)
the crash still happens on HEAD
commit msg: Linux 4.19.191
crash: INFO: trying to register non-static key in ieee802154_del_device
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
INFO: trying to register non-static key.
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 9893 Comm: syz-executor.4 Not tainted 4.19.191-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x17c/0x226 lib/dump_stack.c:118
 assign_lock_key kernel/locking/lockdep.c:728 [inline]
 register_lock_class+0x1911/0x1b20 kernel/locking/lockdep.c:754
 __lock_acquire+0x1a0/0x47c0 kernel/locking/lockdep.c:3304
 lock_acquire+0x180/0x3a0 kernel/locking/lockdep.c:3908
 __mutex_lock_common kernel/locking/mutex.c:928 [inline]
 __mutex_lock+0xf5/0x1200 kernel/locking/mutex.c:1075
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1090
 ieee802154_del_device+0x40/0x80 net/mac802154/cfg.c:418
 rdev_del_device net/ieee802154/rdev-ops.h:299 [inline]
 nl802154_del_llsec_dev+0x220/0x370 net/ieee802154/nl802154.c:1816
 genl_family_rcv_msg+0x599/0x1000 net/netlink/genetlink.c:602
 genl_rcv_msg+0xa7/0x140 net/netlink/genetlink.c:627
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455
 genl_rcv+0x23/0x40 net/netlink/genetlink.c:638
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x443/0x660 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x667/0xc60 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xac/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb9faee6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000004000000 RSI: 0000000020000800 RDI: 0000000000000007
RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffc2796263f R14: 00007fb9faee6300 R15: 0000000000022000
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
ieee80211 phy12: Selected rate control algorithm 'minstrel_ht'
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
ieee80211 phy13: Selected rate control algorithm 'minstrel_ht'
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
ieee80211 phy14: Selected rate control algorithm 'minstrel_ht'
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
ieee80211 phy15: Selected rate control algorithm 'minstrel_ht'
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready