bisecting fixing commit since b850307b279cbd12ab8c654d1a3dfe55319cc475
building syzkaller on f30c14bfec4b49e528a756b28cc010925e2f286b
testing commit b850307b279cbd12ab8c654d1a3dfe55319cc475
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 031af4ee63c27a622813342c788dae367866b0b5d6421dc37bd5610c97334db8
all runs: crashed: possible deadlock in do_io_accounting
testing current HEAD cd529693461026636f76d0395a42cb2439bbd368
testing commit cd529693461026636f76d0395a42cb2439bbd368
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 578cf0771eea86d05cfbbbebf46516add9a8b0bc8008c3f059674f0cf4de841d
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 31m14.332762908s (build: 23m16.449952541s, test: 7m21.246184676s)
the crash still happens on HEAD
commit msg: Linux 4.14.253
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1