bisecting fixing commit since c37da90efff5f183bea6ae4c2af33571f61fe317
building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7
testing commit c37da90efff5f183bea6ae4c2af33571f61fe317 with gcc (GCC) 8.1.0
kernel signature: cc960a83a2886f03850ea582e47c7d378b1e9667afe7d5e8395a26825814676d
run #0: crashed: general protection fault in __switch_to
run #1: crashed: BUG: corrupted list in tty_write
run #2: crashed: BUG: Bad page map
run #3: crashed: BUG: unable to handle kernel paging request in mm_update_next_owner
run #4: crashed: general protection fault in futex_wake
run #5: crashed: KASAN: use-after-free Read in task_active_pid_ns
run #6: crashed: kernel BUG at arch/x86/mm/physaddr.c:LINE!
run #7: crashed: kernel BUG at mm/memory.c:LINE!
run #8: crashed: WARNING: kernel stack regs has bad value
run #9: crashed: general protection fault in pick_next_task_fair
testing current HEAD b94de4d19498b454645b72d08a05d32fa9074fb5
testing commit b94de4d19498b454645b72d08a05d32fa9074fb5 with gcc (GCC) 8.1.0
kernel signature: b8c52b09f8397fcb38fddc1158939ab5bc32a6cd5a533c1fb724cb7321477e41
run #0: crashed: general protection fault in enqueue_entity
run #1: crashed: kernel BUG at arch/x86/mm/physaddr.c:LINE!
run #2: crashed: unexpected kernel reboot
run #3: crashed: BUG: corrupted list in tty_write
run #4: crashed: general protection fault in anon_vma_interval_tree_insert
run #5: crashed: general protection fault in futex_wake
run #6: crashed: kernel BUG at mm/memory.c:LINE!
run #7: crashed: WARNING in __put_task_struct
run #8: crashed: kernel BUG at arch/x86/mm/physaddr.c:LINE!
run #9: crashed: no output from test machine
revisions tested: 2, total time: 31m3.948846148s (build: 17m15.727464772s, test: 13m7.707217283s)
the crash still happens on HEAD
commit msg: Linux 4.19.155
crash: no output from test machine