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: 597d, last: 155d

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

Fix bisection: fixed by (bisect log) :
commit 1378817486d6860f6a927f573491afe65287abf1
Author: Eric Dumazet <edumazet@google.com>
Date: Thu May 21 18:29:58 2020 +0000

  tipc: block BH before using dst_cache

similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: unable to handle kernel paging request in free_block 1 94d 94d 0/1 upstream: reported on 2020/07/21 03:09
upstream BUG: unable to handle kernel paging request in free_block (4) 2 618d 648d 0/17 closed as dup on 2019/01/14 17:27
upstream BUG: unable to handle kernel paging request in free_block (3) 11 910d 939d 0/17 closed as invalid on 2018/09/05 11:23
upstream BUG: unable to handle kernel paging request in free_block (2) 1 947d 947d 0/17 closed as invalid on 2018/03/21 12:59

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info
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