syzbot


WARNING in memdup_user_nul
Status: fixed on 2021/04/09 19:46
Reported-by: syzbot+a71a442385a0b2815497@syzkaller.appspotmail.com
Fix commit: 7ef4c19d245f smackfs: restrict bytes count in smackfs write functions
First crash: 328d, last: 328d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
duplicates (5):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
WARNING in smk_write_net4addr C inconclusive 10 294d 327d 0/22 closed as dup on 2021/01/20 02:55
WARNING in smk_set_cipso C inconclusive 19 243d 324d 0/22 closed as dup on 2021/01/20 02:53
WARNING in smk_write_net6addr C inconclusive 20 295d 323d 0/22 closed as dup on 2021/01/20 02:52
WARNING in smk_write_relabel_self C inconclusive 20 295d 328d 0/22 closed as dup on 2021/01/20 02:55
WARNING in smk_write_syslog C inconclusive 13 289d 322d 0/22 closed as dup on 2021/01/20 02:52
Patch testing requests:
Created Duration User Patch Repo Result
2021/01/28 11:39 17m snovitoll@gmail.com https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/96/7796/1 OK
2021/01/24 13:36 17m snovitoll@gmail.com https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/16/7716/4 OK
2021/01/24 13:24 2m snovitoll@gmail.com git://linux.googlesource.com/linux/kernel/git/torvalds/linux.git 61280bbe04b114ac4d422304b67a79c6671dc8ee error
2021/01/24 11:55 2m snovitoll@gmail.com git://linux.googlesource.com/linux/kernel/git/torvalds/linux.git refs/changes/16/7716/4 error

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/01/14 10:02 upstream 65f0d2414b70 269d24e8 .config log report syz C
ci-upstream-kasan-gce-smack-root 2021/01/14 09:50 upstream 65f0d2414b70 269d24e8 .config log report info