• LK v4.16.x - seq_read - deadlock

    seq_read - possible circular locking (leading to deadlock) posted & found by zer0day tl;dr I’ll just add a Call Trace (Dump) only because it isn’t important as well and the dump will explain sufficiently :). Call Trace (Dump) WARNING: possible circular locking dependency detected 4.16.0-rc1+ #15 Not tainted ------------------------------------------------------ syz-executor2/10621...


  • LK v4.16.x - fifo_open - deadlock

    fifo_open - possible circular locking (leading to deadlock) posted & found by zer0day tl;dr I’ll just add a Call Trace (Dump) only because it isn’t important as well and the dump will explain sufficiently :). Call Trace (Dump) WARNING: possible circular locking dependency detected 4.16.0-rc1+ #15 Not tainted ------------------------------------------------------ syz-executor4/30664...


  • LK v4.16.x - getsockopt - task hung

    getsockopt - task hung in lock_sock_nested posted & found by zer0day tl;dr Posting in a long time :) because of other stuffs… I have a few LK bugs too, but skip it :).. I just found a bug, task hung in lock_sock_nested on the latest LK (v4.16.0-rc1). Of course, from...


  • LK v4.15.x - sidtab_search_core - null dereference

    selinux/sidtab_search_core - null dereference by GPF posted & found by zer0day tl;dr Actually, i got this bug with ‘syzkaller’ about a month ago (on v4.15.0-rc4) and have forgotten it, but now on v4.15.0-rc8, same bug is triggered by my poc code, so i wrote about it :). First of all,...


  • LK - prlimit64 - kernel panic

    prlimit64 (leading to kernel panic) posted & found by zer0day tl;dr W4F, not serious :). I just found a crash on LK v4.15.x (maybe the most of LKs). Actually, it’s obvious that it has to be happened. Because, resizing limitation of MSGQUEUE to 0 and calling socket$xxx repeatedly, in result,...