syzbot


divide error in squashfs_readpage
Status: closed as dup on 2021/05/11 08:53
Reported-by: syzbot+e8f781243ce16ac2f962@syzkaller.appspotmail.com
Fix commit: squashfs: fix divide error in calculate_skip()
First crash: 10d, last: 10d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: divide error in squashfs_readpage (log)
Repro: C syz .config
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
divide error in fill_meta_index C inconclusive 1 9d02h 8d13h
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 divide error in squashfs_readpage C 1 20d 149d 0/1 upstream: reported C repro on 2020/12/15 07:21
linux-4.14 divide error in squashfs_readpage C 1 18d 169d 0/1 upstream: reported C repro on 2020/11/25 03:06
Patch testing requests:
Created Duration User Patch Repo Result
2021/05/03 20:18 16m paskripkin@gmail.com https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/76/10676/1 OK

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/05/03 12:55 upstream d2b6f8a1 77e2b668 .config log report syz C divide error in squashfs_readpage