On Wed, Apr 22, 2020 at 01:34:30PM -0700, Guenter Roeck wrote:
On Wed, Apr 22, 2020 at 11:55:17AM +0200, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.9.220 release. There are 125 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Fri, 24 Apr 2020 09:48:23 +0000. Anything received after that time might be too late.
I see a number of unit test crashes in ppc images. Looks like UAF. This affects 4.4.y, 4.9.y, and 4.14.y. I'll bisect.
Bisect log attached. I suspect the real culprit is commit a4f91f0de905 ("of: unittest: clean up changeset test"), or at least it changes the code enough for the offending patch not to work in v4.14.y and older. Either case, reverting upstream commit b3fb36ed694b ("of: unittest: kmemleak on changeset destroy") fixes the problem and thus needs to be dropped from v4.4.y, v4.9.y, and v4.14.y.
Guenter
--- # bad: [f6cef26090da1763de1a7fc87205c8442d57bc80] Linux 4.9.220-rc1 # good: [5188957a315f664d46ff58fedecbc0f7503f1b22] Linux 4.9.219 git bisect start 'HEAD' 'v4.9.219' # good: [0a499a93529e488ccccf83493c48e82b0bdea615] powerpc/fsl_booke: Avoid creating duplicate tlb1 entry git bisect good 0a499a93529e488ccccf83493c48e82b0bdea615 # bad: [f0b256f314141838039a084b81750d7a9dbc1e16] scsi: ufs: make sure all interrupts are processed git bisect bad f0b256f314141838039a084b81750d7a9dbc1e16 # good: [9eb52f304182868156a97244618a09898d2dc37b] mac80211_hwsim: Use kstrndup() in place of kasprintf() git bisect good 9eb52f304182868156a97244618a09898d2dc37b # good: [cddafffc473da45d9eb419000ab9409824ef8f20] scsi: sg: add sg_remove_request in sg_common_write git bisect good cddafffc473da45d9eb419000ab9409824ef8f20 # bad: [19976f5df09c19ce1bb0563055586998dda609dd] drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem git bisect bad 19976f5df09c19ce1bb0563055586998dda609dd # bad: [9dbcfb15960da712fc134b5d4a133386721497c5] of: unittest: kmemleak on changeset destroy git bisect bad 9dbcfb15960da712fc134b5d4a133386721497c5 # good: [52b90d68b8c200b86e66434e0bc86e87510863f3] ALSA: hda: Don't release card at firmware loading error git bisect good 52b90d68b8c200b86e66434e0bc86e87510863f3 # first bad commit: [9dbcfb15960da712fc134b5d4a133386721497c5] of: unittest: kmemleak on changeset destroy