On Fri, Sep 16, 2016 at 01:38:19PM -0700, Guenter Roeck wrote: > Hi, > > I see the following runtime error in -next when running a metag qemu emulation. > > [ ... ] > workingset: timestamp_bits=30 max_order=16 bucket_order=0 > io scheduler noop registered (default) > brd: module loaded > Warning: unable to open an initial console. > List of all partitions: > 0100 16384 ram0 (driver?) > No filesystem could mount root, tried: > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) > > An example for a complete log is at: > http://kerneltests.org/builders/qemu-metag-next/builds/489/steps/qemubuildcommand/logs/stdio > > bisect points to commit ef98de028afde ("kthread: allow to cancel kthread work"). > I don't know (yet) if other architectures are affected. bisect log is attached. > > The scripts to run this test are available at > https://github.com/groeck/linux-build-test/tree/master/rootfs/metag. > > Guenter Thanks Guenter, It appears to be related to the command line. After that commit the command line is shown as empty (rather than your "rdinit=/sbin/init doreboot"), but it can still be overridden in the config and then it continues to work. I'll debug a little deeper to see if I can figure out whats going wrong. Cheers James > > -- > # bad: [ddf9d15aed5ba5786cf4b082576c44ce37cd29c2] Add linux-next specific files for 20160916 > # good: [9395452b4aab7bc2475ef8935b4a4fb99d778d70] Linux 4.8-rc6 > git bisect start 'HEAD' 'v4.8-rc6' > # good: [03593c66538f0dd2c46f14dfdd9c7c0b96d12163] Merge remote-tracking branch 'crypto/master' > git bisect good 03593c66538f0dd2c46f14dfdd9c7c0b96d12163 > # good: [144ff127c1a802bc466cd9fe64033682193c0831] Merge remote-tracking branch 'edac-amd/for-next' > git bisect good 144ff127c1a802bc466cd9fe64033682193c0831 > # good: [cfab536f2992d0db27424f146cf0e13bb4a2c0c4] Merge remote-tracking branch 'staging/staging-next' > git bisect good cfab536f2992d0db27424f146cf0e13bb4a2c0c4 > # good: [f185e7dd5ed5eb7e1a834bde8ad6ea1393737037] Merge remote-tracking branch 'gpio/for-next' > git bisect good f185e7dd5ed5eb7e1a834bde8ad6ea1393737037 > # good: [a69892f0ba574e71154f8c5c647626a7dd065ce5] ipc-msg-avoid-waking-sender-upon-full-queue-checkpatch-fixes > git bisect good a69892f0ba574e71154f8c5c647626a7dd065ce5 > # good: [209370566ef8c38dcea40561db2c46fadb0078ce] Merge tag 'clk-renesas-for-v4.9-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next > git bisect good 209370566ef8c38dcea40561db2c46fadb0078ce > # good: [be3400244f19bb16b16b5dd32d8719e59790f361] Merge remote-tracking branch 'coresight/next' > git bisect good be3400244f19bb16b16b5dd32d8719e59790f361 > # good: [513d99d37db2a9ceb489e7123fb1458b29eeafff] Merge remote-tracking branch 'nvdimm/libnvdimm-for-next' > git bisect good 513d99d37db2a9ceb489e7123fb1458b29eeafff > # good: [9101ca3b2763583e10ec93a453363a8af3ced438] kthread: add kthread_create_worker*() > git bisect good 9101ca3b2763583e10ec93a453363a8af3ced438 > # bad: [57169cae0bc5472d9d3eee5c0923ae6d5ae8d299] kthread: better support freezable kthread workers > git bisect bad 57169cae0bc5472d9d3eee5c0923ae6d5ae8d299 > # good: [5c204b8f9b8f30bf641095f4005fa320cd192254] kthread: initial support for delayed kthread work > git bisect good 5c204b8f9b8f30bf641095f4005fa320cd192254 > # bad: [26242e2b569d11fbbfdf40c93d9d11329825724a] kthread: allow to modify delayed kthread work > git bisect bad 26242e2b569d11fbbfdf40c93d9d11329825724a > # bad: [ef98de028afde6861712a208b0e25f6b6af3912a] kthread: allow to cancel kthread work > git bisect bad ef98de028afde6861712a208b0e25f6b6af3912a > # first bad commit: [ef98de028afde6861712a208b0e25f6b6af3912a] kthread: allow to cancel kthread work
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