bisecting fixing commit since f4cc0ed9b2c72687303b035379c5824a02224354
building syzkaller on 7509bf360eba1461ac6059e4cacfbc29c9d2d4c7
testing commit f4cc0ed9b2c72687303b035379c5824a02224354
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3040e7e96f047622a431a23a4e089a7b87546860b045c524a54361628be55315
run #0: crashed: BUG: soft lockup in sendfile64
run #1: crashed: BUG: soft lockup in corrupted
run #2: crashed: BUG: soft lockup in corrupted
run #3: crashed: BUG: soft lockup in ext4_file_write_iter
run #4: crashed: BUG: soft lockup in corrupted
run #5: crashed: BUG: soft lockup in corrupted
run #6: crashed: BUG: soft lockup in corrupted
run #7: crashed: BUG: soft lockup in corrupted
run #8: crashed: BUG: soft lockup in corrupted
run #9: crashed: BUG: soft lockup in corrupted
run #10: crashed: BUG: soft lockup in sendfile64
run #11: crashed: BUG: soft lockup in corrupted
run #12: crashed: BUG: soft lockup in ext4_file_write_iter
run #13: crashed: BUG: soft lockup in sendfile64
run #14: crashed: BUG: soft lockup in sendfile64
run #15: crashed: BUG: soft lockup in corrupted
run #16: crashed: BUG: soft lockup in ext4_file_write_iter
run #17: crashed: BUG: soft lockup in corrupted
run #18: crashed: BUG: soft lockup in corrupted
run #19: crashed: BUG: soft lockup in corrupted
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3e981c76de149906bd8343e2b37f52ce9a1baadc1bbf31375c8e552ccdf05838
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m24.778000483s (build: 22m6.834671556s, test: 6m36.207286749s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1