syzbot


BUG: unable to handle kernel paging request in csum_partial (3)
Status: upstream: reported C repro on 2021/07/15 05:49
Reported-by: syzbot+ff8e1b9f2f36481e2efc@syzkaller.appspotmail.com
Fix commit: 9cf448c200ba ip6_gre: add validation for csum_start 1d011c4803c7 ip_gre: add validation for csum_start
Patched on: [ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 68d, last: 33d

Cause bisection: introduced by (bisect log) :
commit fdafed459998e2be0e877e6189b24cb7a0183224
Author: Cong Wang <xiyou.wangcong@gmail.com>
Date: Mon Oct 12 23:17:21 2020 +0000

  ip_gre: set dev->hard_header_len and dev->needed_headroom properly

Crash: BUG: unable to handle kernel paging request in do_csum (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 BUG: unable to handle kernel paging request in csum_partial C 5 20d 601d 0/1 upstream: reported C repro on 2020/01/24 10:05
upstream BUG: unable to handle kernel paging request in csum_partial (2) 1 236d 236d 0/22 auto-closed as invalid on 2021/04/23 09:26
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/18 07:43 34m chouhan.shreyansh630@gmail.com patch upstream OK
2021/08/09 16:33 33m chouhan.shreyansh630@gmail.com patch upstream OK
2021/07/30 11:22 36m chouhan.shreyansh630@gmail.com upstream report log

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/08/15 01:54 upstream ba31f97d43be 8f5a7b8c .config log report syz C
Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/07/11 05:38 upstream 3dbdb38e2869 8f5a7b8c .config log report syz C BUG: unable to handle kernel paging request in csum_partial