general protection fault in syscall_return_slowpath
Status: upstream: reported syz repro on 2020/03/08 07:45
First crash: 153d, last: 62d

Cause bisection: the bug happens on the oldest tested release
Crash: WARNING in sysfs_warn_dup (log)
Repro: syz .config
duplicates (4):
Title Repro Bisected Count Last Reported Patched Status
KASAN: null-ptr-deref Read in kvm_arch_check_processor_compat syz cause 1 45d 41d 0/17 closed as dup on 2020/06/30 06:11
BUG: unable to handle kernel NULL pointer dereference in __syscall_return_slowpath C 55 8d12h 35d 0/17 closed as dup on 2020/06/29 16:42
general protection fault in pvclock_gtod_notify C 50 8d12h 38d 0/17 closed as dup on 2020/06/30 06:12
KASAN: out-of-bounds Read in kvm_arch_hardware_setup C 1 41d 37d 0/17 closed as dup on 2020/06/30 06:12
Patch testing requests:
Created Duration User Patch Repo Result
2020/07/10 07:27 14m patch 63623fd44972d1ed2bfb6e0fb631dfcf547fd1e7 report log
2020/07/04 06:40 0m patch 63623fd44972d1ed2bfb6e0fb631dfcf547fd1e7 error
2020/07/03 11:23 0m patch 63623fd44972d1ed2bfb6e0fb631dfcf547fd1e7 error
2020/03/08 18:35 3m patch 63623fd44972d1ed2bfb6e0fb631dfcf547fd1e7 error
2020/03/08 17:21 3m patch 63623fd44972d1ed2bfb6e0fb631dfcf547fd1e7 error

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-upstream-kasan-gce-smack-root 2020/06/02 19:19 upstream f3592877 c88c7b75 .config log syz
ci-upstream-kasan-gce-smack-root 2020/05/03 18:49 upstream f66ed1eb c88c7b75 .config log syz
ci-upstream-kasan-gce-smack-root 2020/04/03 11:57 upstream bef7b2a7 c88c7b75 .config log syz
Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-smack-root 2020/03/04 07:43 upstream 63623fd4 c88c7b75 .config log report syz,,,,,,