Please see the bisection report below about a boot failure. Reports aren't automatically sent to the public while we're trialing new bisection features on kernelci.org but this one looks valid. This bisection was run with exynos_defconfig but the issue can also be reproduced with multi_v7_defconfig. It doesn't appear to be affecting any other platforms on kernelci.org. This looks like a DRM driver problem, the kernel image boots fine without the modules installed. It actually started failing on Tuesday in mainline. Guillaume On 02/04/2020 19:38, kernelci.org bot wrote: > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > * This automated bisection report was sent to you on the basis * > * that you may be involved with the breaking commit it has * > * found. No manual investigation has been done to verify it, * > * and the root cause of the problem may be somewhere else. * > * * > * If you do send a fix, please include this trailer: * > * Reported-by: "kernelci.org bot" <bot@xxxxxxxxxxxx> * > * * > * Hope this helps! * > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > > mainline/master bisection: baseline.login on peach-pi > > Summary: > Start: 56a451b780676 Merge tag 'ntb-5.7' of git://github.com/jonmason/ntb > Plain log: https://storage.kernelci.org//mainline/master/v5.6-3277-g56a451b78067/arm/exynos_defconfig/gcc-8/lab-collabora/baseline-exynos5800-peach-pi.txt > HTML log: https://storage.kernelci.org//mainline/master/v5.6-3277-g56a451b78067/arm/exynos_defconfig/gcc-8/lab-collabora/baseline-exynos5800-peach-pi.html > Result: 42e67b479eab6 drm/prime: use dma length macro when mapping sg > > Checks: > revert: PASS > verify: PASS > > Parameters: > Tree: mainline > URL: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > Branch: master > Target: peach-pi > CPU arch: arm > Lab: lab-collabora > Compiler: gcc-8 > Config: exynos_defconfig > Test case: baseline.login > > Breaking commit found: > > ------------------------------------------------------------------------------- > commit 42e67b479eab6d26459b80b4867298232b0435e7 > Author: Shane Francis <bigbeeshane@xxxxxxxxx> > Date: Wed Mar 25 09:07:39 2020 +0000 > > drm/prime: use dma length macro when mapping sg > > As dma_map_sg can reorganize scatter-gather lists in a > way that can cause some later segments to be empty we should > always use the sg_dma_len macro to fetch the actual length. > > This could now be 0 and not need to be mapped to a page or > address array > > Fixes: be62dbf554c5 ("iommu/amd: Convert AMD iommu driver to the dma-iommu api") > Bug: https://bugzilla.kernel.org/show_bug.cgi?id=206461 > Bug: https://bugzilla.kernel.org/show_bug.cgi?id=206895 > Bug: https://gitlab.freedesktop.org/drm/amd/issues/1056 > Signed-off-by: Shane Francis <bigbeeshane@xxxxxxxxx> > Reviewed-by: Michael J. Ruhl <michael.j.ruhl@xxxxxxxxx> > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> > Link: https://patchwork.freedesktop.org/patch/msgid/20200325090741.21957-2-bigbeeshane@xxxxxxxxx > Cc: stable@xxxxxxxxxxxxxxx > > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 86d9b0e45c8c6..1de2cde2277ca 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -967,7 +967,7 @@ int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, > > index = 0; > for_each_sg(sgt->sgl, sg, sgt->nents, count) { > - len = sg->length; > + len = sg_dma_len(sg); > page = sg_page(sg); > addr = sg_dma_address(sg); > ------------------------------------------------------------------------------- > > > Git bisection log: > > ------------------------------------------------------------------------------- > git bisect start > # good: [8b614cb8f1dcac8ca77cf4dd85f46ef3055f8238] Merge tag '5.6-rc4-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 > git bisect good 8b614cb8f1dcac8ca77cf4dd85f46ef3055f8238 > # bad: [56a451b780676bc1cdac011735fe2869fa2e9abf] Merge tag 'ntb-5.7' of git://github.com/jonmason/ntb > git bisect bad 56a451b780676bc1cdac011735fe2869fa2e9abf > # bad: [59838093be51ee9447f6ad05483d697b6fa0368d] Merge tag 'driver-core-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core > git bisect bad 59838093be51ee9447f6ad05483d697b6fa0368d > # bad: [32db9f10d52c97ffc407c7dad81c6fafcad730b2] Merge tag 'arm-soc-fixes-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc > git bisect bad 32db9f10d52c97ffc407c7dad81c6fafcad730b2 > # good: [78511edc2dd4c7b9f74f3b544093c854b7bd7744] Merge tag 'pm-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm > git bisect good 78511edc2dd4c7b9f74f3b544093c854b7bd7744 > # good: [76ccd234269bd05debdbc12c96eafe62dd9a6180] Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip > git bisect good 76ccd234269bd05debdbc12c96eafe62dd9a6180 > # good: [81573b18f26defe672a7d960f9af9ac2c97f324d] selftests/net/forwarding: add Makefile to install tests > git bisect good 81573b18f26defe672a7d960f9af9ac2c97f324d > # good: [9efcc4a129363187c9bf15338692f107c5c9b6f0] afs: Fix unpinned address list during probing > git bisect good 9efcc4a129363187c9bf15338692f107c5c9b6f0 > # bad: [823846c3107197b6eae9fb656a23e986926d6c07] Merge tag 'riscv-for-linus-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux > git bisect bad 823846c3107197b6eae9fb656a23e986926d6c07 > # bad: [7bf8df68cba0536479aead32297e47908922582c] Merge tag 'drm-fixes-2020-03-27' of git://anongit.freedesktop.org/drm/drm > git bisect bad 7bf8df68cba0536479aead32297e47908922582c > # good: [fbf66796a0aedbaea248c7ade1459ccd0dd4cb44] Input: move the new KEY_SELECTIVE_SCREENSHOT keycode > git bisect good fbf66796a0aedbaea248c7ade1459ccd0dd4cb44 > # bad: [5117c363eb213d5503f5b7e39c9bfafd46388184] Merge tag 'drm-misc-fixes-2020-03-26' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes > git bisect bad 5117c363eb213d5503f5b7e39c9bfafd46388184 > # bad: [0199172f933342d8b1011aae2054a695c25726f4] drm/amdgpu: fix scatter-gather mapping with user pages > git bisect bad 0199172f933342d8b1011aae2054a695c25726f4 > # bad: [42e67b479eab6d26459b80b4867298232b0435e7] drm/prime: use dma length macro when mapping sg > git bisect bad 42e67b479eab6d26459b80b4867298232b0435e7 > # first bad commit: [42e67b479eab6d26459b80b4867298232b0435e7] drm/prime: use dma length macro when mapping sg > ------------------------------------------------------------------------------- > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
