bisecting fixing commit since b850307b279cbd12ab8c654d1a3dfe55319cc475
building syzkaller on eabcced43245881efa7769d938bcaf795ed48742
testing commit b850307b279cbd12ab8c654d1a3dfe55319cc475
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fb50130732166d7f16b5ff8b69f6751fc49bc2bda388474b3e8830511c7ada21
run #0: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #1: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #3: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #9: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #10: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #11: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #12: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #13: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #14: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #15: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #16: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #17: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #18: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #19: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0ed800ae1f28be832621121b6344fc7ab8517c2a2a72bc63bbc8d2eaa3b0b879
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m17.656699272s (build: 23m13.397475484s, test: 6m19.488982827s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
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