syzbot


INFO: task hung in paste_selection (2)
Status: upstream: reported syz repro on 2021/08/19 03:38
Reported-by: syzbot+275e275bd3f536725dd8@syzkaller.appspotmail.com
First crash: 70d, last: 21d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: KASAN: use-after-free Read in n_tty_receive_buf_common (log)
Repro: syz .config
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in paste_selection C done 10 607d 682d 1/1 fixed on 2020/03/26 13:10
upstream INFO: task hung in paste_selection C inconclusive done 8 623d 688d 17/22 fixed on 2020/04/15 17:19
linux-4.14 INFO: task hung in paste_selection (3) 1 273d 273d 0/1 auto-closed as invalid on 2021/05/24 08:55
linux-4.14 INFO: task hung in paste_selection (2) 1 465d 465d 0/1 auto-closed as invalid on 2020/11/12 23:24
linux-4.14 INFO: task hung in paste_selection C done 8 606d 682d 1/1 fixed on 2020/03/27 08:38
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/23 14:44 14m phind.uet@gmail.com linux-next 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 2021/10/03 00:25 upstream 9904468fb0b7 2489ab88 .config log report syz
Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/08/15 03:35 upstream ba31f97d43be 2489ab88 .config log report syz INFO: task hung in paste_selection
ci-upstream-kasan-gce-smack-root 2021/09/02 23:54 upstream 4ac6d90867a4 15cea0a3 .config log report info INFO: task hung in paste_selection
ci-upstream-kasan-gce-root 2021/08/20 01:49 upstream d992fe5318d8 b599f2fc .config log report info INFO: task hung in paste_selection