Hi everyone, Here is another bunch of bisect logs generated during the search of BUG: unable to handle kernel NULL pointer dereference at 0000000000000370. Strangely, none of these commits except 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a cause logon issues, but nevertheless, I think them all worth being looked into. Both rounds were made just to be sure which commit introduced a bug. Round one: git bisect start # bad: [132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a] Merge tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb git bisect bad 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a # good: [6f6a407a591ebe3e4c6bd2329b29862b3980a3ca] Merge tag 'usb-serial-5.2-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next git bisect good 6f6a407a591ebe3e4c6bd2329b29862b3980a3ca # good: [01e5d1830cf54ac45768ef9ceb3e79cea2e1198c] Merge tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc git bisect good 01e5d1830cf54ac45768ef9ceb3e79cea2e1198c # good: [6ffe0acc935f344eb0b35da07c034d5122222e77] Merge tag 'wireless-drivers-next-for-davem-2019-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next git bisect good 6ffe0acc935f344eb0b35da07c034d5122222e77 # good: [6f6a407a591ebe3e4c6bd2329b29862b3980a3ca] Merge tag 'usb-serial-5.2-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next git bisect good 6f6a407a591ebe3e4c6bd2329b29862b3980a3ca # good: [6f6a407a591ebe3e4c6bd2329b29862b3980a3ca] Merge tag 'usb-serial-5.2-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next git bisect good 6f6a407a591ebe3e4c6bd2329b29862b3980a3ca # good: [2310673c3c12e4b7f8a31c41f67f701d24b0de86] Merge tag 'char-misc-5.2-rc1-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc git bisect good 2310673c3c12e4b7f8a31c41f67f701d24b0de86 # good: [67a242223958d628f0ba33283668e3ddd192d057] Merge tag 'for-5.2/block-20190507' of git://git.kernel.dk/linux-block git bisect good 67a242223958d628f0ba33283668e3ddd192d057 # good: [82efe439599439a5e1e225ce5740e6cfb777a7dd] Merge tag 'devicetree-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux git bisect good 82efe439599439a5e1e225ce5740e6cfb777a7dd # good: [54516da1ea859dd4f56ebba2e483d2df9d7c8a32] Merge branch 'r8169-replace-some-magic-with-more-speaking-functions' git bisect good 54516da1ea859dd4f56ebba2e483d2df9d7c8a32 # good: [a9e41a529681b38087c91ebc0bb91e12f510ca2d] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net git bisect good a9e41a529681b38087c91ebc0bb91e12f510ca2d # good: [408b56ca5c8eea1e46d2094818de8acc7215cf58] usb: gadget: udc: lpc32xx: simplify probe git bisect good 408b56ca5c8eea1e46d2094818de8acc7215cf58 # good: [5799aecd64f2bb6c8175a2e86fbcb9e60d052221] usb: dwc2: Fix channel disable flow git bisect good 5799aecd64f2bb6c8175a2e86fbcb9e60d052221 # good: [b873e2d0ea1efc91fb603b727733525f07419f2b] usb: dwc3: Do core validation early on probe git bisect good b873e2d0ea1efc91fb603b727733525f07419f2b # good: [2e487d280525b91b03976203b15aba365ec5b4e6] usb: dwc3: Rename DWC3_DCTL_LPM_ERRATA git bisect good 2e487d280525b91b03976203b15aba365ec5b4e6 # bad: [3515468a87a47781f6af818773650513ff14656a] Merge tag 'usb-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next git bisect bad 3515468a87a47781f6af818773650513ff14656a # bad: [12456e509be25d24fe479394852428517922d02a] Merge 5.1-rc7 into usb-next git bisect bad 12456e509be25d24fe479394852428517922d02a # first bad commit: [12456e509be25d24fe479394852428517922d02a] Merge 5.1-rc7 into usb-next Round two: git bisect start # bad: [132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a] Merge tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb git bisect bad 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a # good: [86dc59e39031fb0d366d5b1f92db015b24bef70b] net: dsa: sja1105: Make 'sja1105et_regs' and 'sja1105pqrs_regs' static git bisect good 86dc59e39031fb0d366d5b1f92db015b24bef70b # good: [80f232121b69cc69a31ccb2b38c1665d770b0710] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next git bisect good 80f232121b69cc69a31ccb2b38c1665d770b0710 # good: [5d438e200215f61ca6a7aa69f3c4e035ac54d8ee] usb: typec: ucsi: ccg: add get_fw_info function git bisect good 5d438e200215f61ca6a7aa69f3c4e035ac54d8ee # good: [6f6a407a591ebe3e4c6bd2329b29862b3980a3ca] Merge tag 'usb-serial-5.2-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next git bisect good 6f6a407a591ebe3e4c6bd2329b29862b3980a3ca # good: [1e868545f2bb06f7dd4a1c97c5b9ed2615929cf0] usb: dwc2: gadget: Move gadget phy init into core phy init git bisect good 1e868545f2bb06f7dd4a1c97c5b9ed2615929cf0 # good: [c8006f67ae0371900e601112d9f9cd8fff1c8387] usb: dwc2: Set actual frame number for completed ISOC transfer git bisect good c8006f67ae0371900e601112d9f9cd8fff1c8387 # good: [c729969b2b692ce3ed362e60d38391e7671758ff] usb: dwc3: gadget: Set lpm_capable git bisect good c729969b2b692ce3ed362e60d38391e7671758ff # good: [8d791929b2fbdf7734c1596d808e55cb457f4562] usb: dwc3: Fix default lpm_nyet_threshold value git bisect good 8d791929b2fbdf7734c1596d808e55cb457f4562 # good: [2e487d280525b91b03976203b15aba365ec5b4e6] usb: dwc3: Rename DWC3_DCTL_LPM_ERRATA git bisect good 2e487d280525b91b03976203b15aba365ec5b4e6 # bad: [3515468a87a47781f6af818773650513ff14656a] Merge tag 'usb-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next git bisect bad 3515468a87a47781f6af818773650513ff14656a # bad: [12456e509be25d24fe479394852428517922d02a] Merge 5.1-rc7 into usb-next git bisect bad 12456e509be25d24fe479394852428517922d02a # first bad commit: [12456e509be25d24fe479394852428517922d02a] Merge 5.1-rc7 into usb-next пт, 7 июн. 2019 г. в 02:58, Vladimir Yerilov <openmindead@xxxxxxxxx>: > > Finally I can name the first bad commit: > > git bisect good > ad74b8649beaf1a22cf8641324e3321fa0269d16 is the first bad commit > commit ad74b8649beaf1a22cf8641324e3321fa0269d16 > Author: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > Date: Tue Apr 23 17:21:48 2019 +0300 > > usb: typec: ucsi: Preliminary support for alternate modes > > With UCSI the alternate modes, just like everything else > related to USB Type-C connectors, are handled in firmware. > The operating system can see the status and is allowed to > request certain things, for example entering and exiting the > modes, but the support for alternate modes is very limited > in UCSI. The feature is also optional, which means that even > when the platform supports alternate modes, the operating > system may not be even made aware of them. > > UCSI does not support direct VDM reading or writing. > Instead, alternate modes can be entered and exited using a > single custom command which takes also an optional SVID > specific configuration value as parameter. That means every > supported alternate mode has to be handled separately in > UCSI driver. > > This commit does not include support for any specific > alternate mode. The discovered alternate modes are now > registered, but binding a driver to an alternate mode will > not be possible until support for that alternate mode is > added to the UCSI driver. > > Tested-by: Ajay Gupta <ajayg@xxxxxxxxxx> > Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > :040000 040000 f19a610d131d6d3e6397934562dd6112e78b2415 > 76df0e463eeacf57157adba0291fc9577c7d5145 M dr > ivers > > git bisect log > git bisect start > # bad: [132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a] Merge tag > 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/ > linux/kernel/git/gregkh/usb > git bisect bad 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a > # good: [86dc59e39031fb0d366d5b1f92db015b24bef70b] net: dsa: sja1105: > Make 'sja1105et_regs' and 'sja1105pq > rs_regs' static > git bisect good 86dc59e39031fb0d366d5b1f92db015b24bef70b > # good: [80f232121b69cc69a31ccb2b38c1665d770b0710] Merge > git://git.kernel.org/pub/scm/linux/kernel/git/dav > em/net-next > git bisect good 80f232121b69cc69a31ccb2b38c1665d770b0710 > # good: [5d438e200215f61ca6a7aa69f3c4e035ac54d8ee] usb: typec: ucsi: > ccg: add get_fw_info function > git bisect good 5d438e200215f61ca6a7aa69f3c4e035ac54d8ee > # bad: [6f6a407a591ebe3e4c6bd2329b29862b3980a3ca] Merge tag > 'usb-serial-5.2-rc1' of https://git.kernel.org > /pub/scm/linux/kernel/git/johan/usb-serial into usb-next > git bisect bad 6f6a407a591ebe3e4c6bd2329b29862b3980a3ca > # bad: [e823d948b7e53dc982c867ac4ce7877fc0418897] usb: musb: dsps: Use > dev_get_drvdata() > git bisect bad e823d948b7e53dc982c867ac4ce7877fc0418897 > # bad: [6fee3787ea7aebf25fecdce325ee9b2150c5727b] dt-bindings: > usb-xhci: Add r8a774c0 support > git bisect bad 6fee3787ea7aebf25fecdce325ee9b2150c5727b > # bad: [cf28369c634fafb5f4e81750cba6988cdb4b4490] usb: typec: Add > driver for NVIDIA Alt Modes > git bisect bad cf28369c634fafb5f4e81750cba6988cdb4b4490 > # bad: [ad74b8649beaf1a22cf8641324e3321fa0269d16] usb: typec: ucsi: > Preliminary support for alternate mode > s > git bisect bad ad74b8649beaf1a22cf8641324e3321fa0269d16 > # good: [5c9ae5a87573d38cfc4c740aafda2fa6ce06e401] usb: typec: ucsi: > ccg: add firmware flashing support > git bisect good 5c9ae5a87573d38cfc4c740aafda2fa6ce06e401 > # first bad commit: [ad74b8649beaf1a22cf8641324e3321fa0269d16] usb: > typec: ucsi: Preliminary support for a > lternate modes > > Best regards, > Vladimir > > чт, 6 июн. 2019 г. в 02:59, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > > > > On Wed, Jun 05, 2019 at 04:36:23PM +1000, Vladimir Yerilov wrote: > > > Good day Mr. Kroah-Hartman, > > > > > > I've found the culprit commit. It took a while though but now I'm sure: > > > > > > commit - brief decription - time - works (y) or not (n) > > > 670784fb4ebe54434e263837390e358405031d9e - rc1 2019-05-20 > > > e260ad01f0aa9e96b5386d5cd7184afd949dc457 - rc0 2019-05-14 19:52:51 -0700 n > > > 8ea5b2abd07e2280a332bd9c1a7f4dd15b9b6c13 - rc0 2019-05-09 19:35:41 -0700 n > > > 54516da1ea859dd4f56ebba2e483d2df9d7c8a32 - rc0 2019-05-05 21:58:36 -0700 y > > > 71ae5fc87c34ecbdca293c2a5c563d6be2576558 - rc0 2019-05-06 20:29:45 -0700 y > > > 80f232121b69cc69a31ccb2b38c1665d770b0710 - rc0 2019-05-07 22:03:58 -0700 y > > > a2d635decbfa9c1e4ae15cb05b68b2559f7f827c - rc0 2019-05-08 21:35:19 -0700 n > > > 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a - rc0 2019-05-08 10:03:52 -0700 n > > > 86dc59e39031fb0d366d5b1f92db015b24bef70b - rc0 2019-05-08 09:46:44 -0700 y > > > > > > So 86dc59e39031fb0d366d5b1f92db015b24bef70b is the last working for > > > me, and 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a is the breaking one: > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.2-rc3&id=132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a > > > > 132d68d37d33 ("Merge tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb") > > is a merge point, which is odd, you should be able to drop down into > > that and find the exact wrong commit. > > > > what does 'git bisect log' show? > > > > thanks, > > > > greg k-h > > > > -- > ---- > Best regards, > Vladimir Yerilov -- ---- Best regards, Vladimir Yerilov
