bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 70c104a18f3d409bc6dde950b50258d3d280d99b
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: afdea27054aaeb7d239a8efc0eb92d48cd9e1adad8430982c3873b7501386a60
run #0: crashed: BUG: unable to handle kernel paging request in __alloc_skb
run #1: crashed: BUG: unable to handle kernel paging request in __alloc_skb
run #2: crashed: BUG: unable to handle kernel paging request in __alloc_skb
run #3: crashed: BUG: unable to handle kernel paging request in __alloc_skb
run #4: crashed: BUG: unable to handle kernel paging request in __alloc_skb
run #5: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #6: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #7: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #8: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #9: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #10: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #11: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #12: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #13: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #14: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #15: crashed: INFO: rcu detected stall in corrupted
run #16: crashed: INFO: rcu detected stall in corrupted
run #17: crashed: INFO: rcu detected stall in corrupted
run #18: crashed: INFO: rcu detected stall in rtnl_newlink
run #19: crashed: INFO: rcu detected stall in rtnl_newlink
testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 9a9fb3d9958a3c4820eca1a5181eabae1e73b692848727c5b88eafeb93a14fab
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m20.129082104s (build: 18m21.468787603s, test: 8m28.013972509s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1