bisecting fixing commit since b850307b279cbd12ab8c654d1a3dfe55319cc475
building syzkaller on eabcced43245881efa7769d938bcaf795ed48742
testing commit b850307b279cbd12ab8c654d1a3dfe55319cc475
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 80fda60be2b2fd164bb95871d698963c2efd44a9e13ae3e89e2836985bfdb274
run #0: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free 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: slab-out-of-bounds Read in __ext4_check_dir_entry
run #8: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #10: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #11: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #12: crashed: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
run #13: crashed: KASAN: slab-out-of-bounds 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: slab-out-of-bounds Read in __ext4_check_dir_entry
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 8ea4f73cfa7e0555dc03aedde52db54a6587ab43
testing commit 8ea4f73cfa7e0555dc03aedde52db54a6587ab43
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 11c48be6c54e22591374b6f19ae7a17d841ed1d1ba8ab04f9854030333cf7ab1
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 32m13.887337381s (build: 19m28.86015745s, test: 12m15.212908307s)
the crash still happens on HEAD
commit msg: Linux 4.14.247
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1