bisecting fixing commit since cf256fbcbe347b7d0ff58fe2dfa382a156bd3694 building syzkaller on c0ced5570c6505a80235b64884c93e89733b77f3 testing commit cf256fbcbe347b7d0ff58fe2dfa382a156bd3694 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 19f8915e64b505fa4955e951456b32ffa2a4eeffd2b28a48e90a090f1fa809c3 run #0: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #1: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #2: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #3: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #4: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #5: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #6: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #7: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #8: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #9: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #10: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #11: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #12: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #13: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #14: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #15: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #16: crashed: KASAN: slab-out-of-bounds Write in ext4_write_inline_data run #17: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #18: crashed: KASAN: use-after-free Write in ext4_write_inline_data run #19: crashed: KASAN: use-after-free Write in ext4_write_inline_data testing current HEAD 9dfbac0e6b8600043de8dc85ed072f5f1342dc15 testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 1c17326b84bdef8b36c57839dfc88bd8c9ba19ae13a4a15eb373747d08f04714 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 23m35.678483614s (build: 16m22.281371401s, test: 6m47.345019745s) the crash still happens on HEAD commit msg: Linux 4.14.258 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout