canonical-ubuntu-qa team mailing list archive

[Po-Hsu Lin <1928028@xxxxxxxxxxxxxxxxxx>]

OEM-5.6 EOL. Closing this bug.

** Changed in: ubuntu-kernel-tests
       Status: In Progress => Won't Fix

** Changed in: linux-oem-5.6 (Ubuntu Focal)
       Status: In Progress => Won't Fix

-- 
You received this bug notification because you are a member of Canonical
Platform QA Team, which is subscribed to ubuntu-kernel-tests.
https://bugs.launchpad.net/bugs/1928028

Title:
  io_uring02 from ubuntu_ltp_syscalls fails on F/oem-5.6 (timeouted /
  SIGKILL)

Status in ubuntu-kernel-tests:
  Won't Fix
Status in linux-oem-5.6 package in Ubuntu:
  Invalid
Status in linux-oem-5.6 source package in Focal:
  Won't Fix

Bug description:
  [Impact]
  When using async io_uring OP_SENDMSG, a copy to kernel address 0 might be attempted, leading to a kernel WARN/BUG and an uninterruptible process.

  [Fix]
  Partial backport of dd821e0c95a64b5923a0c57f07d3f7563553e756 ("io_uring: fix missing msg_name assignment"). The recvmsg side does not seed to set msg_name, as it copies from a local/stack kernel address (at ____sys_recvmsg) to a uaddr parameter, which is given when doing the copy_msghdr operation.

  [Test case]
  LTP io_uring02 was run, and an equivalent recvmsg test was done too. A successfull sendmsg test (without the chroot at io_uring02 test) was also tested.

  [Potential regressions]
  io_uring sendmsg/recvmsg paths could fail, potentially leading to a system crash or even a security vulnerability.

  
  -----------------------------------------------------------------------

  
  io_uring02 from ubuntu_ltp_syscalls fails on F/oem-5.6 5.6.0-1056.60 on host spitfire

  This test isn't found to be ran on previous versions on F/oem-5.6, so
  would not consider this to be a regression.

  26934. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] tag=io_uring01 stime=1620398217 dur=0 exit=exited stat=0 core=no cu=0 cs=0
  26935. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] startup='Fri May 7 14:36:57 2021'
  26936. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] tst_test.c:1311: TINFO: Timeout per run is 0h 05m 00s
  26937. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26938. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26939. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26940. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26941. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26942. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26943. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26944. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26945. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26946. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26947. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Test timeouted, sending SIGKILL!
  26948. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Cannot kill test processes!
  26949. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Congratulation, likely test hit a kernel bug.
  26950. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] Exitting uncleanly...
  26951. 	05/07 14:42:48 DEBUG| utils:0153| [stdout] tag=io_uring02 stime=1620398217 dur=350 exit=exited stat=1 core=no cu=0 cs=0

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1928028/+subscriptions