bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 70c104a18f3d409bc6dde950b50258d3d280d99b
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6dae9de3e978b3dc0bd697f1efa743b12111635496b342f4fa236d84c1e43ac3
run #0: crashed: BUG: unable to handle kernel paging request in __alloc_skb
run #1: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #2: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #3: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
run #4: crashed: BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet
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: INFO: rcu detected stall in rtnl_newlink
run #13: crashed: INFO: rcu detected stall in rtnl_newlink
run #14: crashed: INFO: rcu detected stall in rtnl_newlink
run #15: crashed: INFO: rcu detected stall in rtnl_newlink
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 corrupted
run #19: crashed: INFO: rcu detected stall in corrupted
testing current HEAD 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
testing commit 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 118cda7c9f61e1dc099e20762893d22186ab5059246aa6da4c80b8ae5f81e80d
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m19.361115155s (build: 15m36.87975612s, test: 7m18.544428206s)
the crash still happens on HEAD
commit msg: Linux 4.14.276
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1