syzbot


BUG: unable to handle kernel paging request in free_block (5)
Status: upstream: reported syz repro on 2019/04/18 05:08
Reported-by: syzbot+438a5abd4f53adb1c073@syzkaller.appspotmail.com
First crash: 522d, last: 81d

Cause bisection: introduced by (bisect log):

commit 52dfae5c85a4c1078e9f1d5e8947d4a25f73dd81
Author: Jon Maloy <jon.maloy@ericsson.com>
Date: Thu Mar 22 19:42:52 2018 +0000

  tipc: obtain node identity from interface by default

Crash: inconsistent lock state in rhashtable_walk_enter (log)
Repro: syz .config
similar bugs (4):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 BUG: unable to handle kernel paging request in free_block 1 20d 20d 0/1 upstream: reported on 2020/07/21 03:09
upstream BUG: unable to handle kernel paging request in free_block (4) 2 544d 574d 0/17 closed as dup on 2019/01/14 17:27
upstream BUG: unable to handle kernel paging request in free_block (3) 11 836d 864d 0/17 closed as invalid on 2018/09/05 11:23
upstream BUG: unable to handle kernel paging request in free_block (2) 1 873d 873d 0/17 closed as invalid on 2018/03/21 12:59

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-upstream-net-this-kasan-gce 2020/05/21 08:21 net d69100b8 b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2020/04/21 07:47 net a460fc5d b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2020/03/22 07:01 net 749f6f68 b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2020/01/27 23:54 net 2821e26f b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2019/12/18 19:05 net ddd9b5e3 b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2019/11/09 16:46 net 0058b0a5 b0e8efcb .config log report syz
ci-upstream-net-this-kasan-gce 2019/08/19 08:29 net e6986423 b0e8efcb .config log report syz
Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-upstream-net-this-kasan-gce 2019/04/18 05:07 net e6986423 b0e8efcb .config log report syz
ci-upstream-kasan-gce 2019/03/06 22:48 upstream afe6fe70 18215b8d .config log report
ci-upstream-net-this-kasan-gce 2019/04/11 17:22 net 988dc4a9 13030ef8 .config log report