* Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> wrote: > On Mon, 11 Jan, at 12:59:21AM, Srikar Dronamraju wrote: > > On a x86_64 machine, I see kernel v4.4-rc8 based tip tree hangs on boot. > > However v4.4-rc8 with the same config boots well on the same machine. > > > > git bisect results are as follows > > > > git bisect start > > # bad: [fc4e8fa9f80e0f099838f3a9997019de36d9a4ba] Merge branch 'WIP.x86/mm' > > git bisect bad fc4e8fa9f80e0f099838f3a9997019de36d9a4ba > > # good: [168309855a7d1e16db751e9c647119fe2d2dc878] Linux 4.4-rc8 > > git bisect good 168309855a7d1e16db751e9c647119fe2d2dc878 > > # good: [76e17c25ebc9f6619f9f8fd93f3905b0def8dc6f] Merge branch 'perf/core' > > git bisect good 76e17c25ebc9f6619f9f8fd93f3905b0def8dc6f > > # good: [e8998ce7e8ce42419d0c7bb08c105bd860eb3218] Merge branch 'timers/urgent' > > git bisect good e8998ce7e8ce42419d0c7bb08c105bd860eb3218 > > # good: [af51cdabdbea5355ed388b8b3a7cf9bfc0864b9c] Merge branch 'x86/cpu' > > git bisect good af51cdabdbea5355ed388b8b3a7cf9bfc0864b9c > > # bad: [5852b88267adcc78722fc5d4f45751fb6e261bd2] Merge branch 'x86/urgent' > > git bisect bad 5852b88267adcc78722fc5d4f45751fb6e261bd2 > > # bad: [c236714fd39fb26993af2d5fde9c3bfc32361323] Merge branch 'x86/fpu' > > git bisect bad c236714fd39fb26993af2d5fde9c3bfc32361323 > > # bad: [ff3d0a12fb2dc123e2b46e9524ebf4e08de5c59c] Documentation/x86: Update EFI memory region description > > git bisect bad ff3d0a12fb2dc123e2b46e9524ebf4e08de5c59c > > # bad: [b61a76f8850d2979550abc42d7e09154ebb8d785] x86/efi: Map RAM into the identity page table for mixed mode > > git bisect bad b61a76f8850d2979550abc42d7e09154ebb8d785 > > # bad: [edc3b9129cecd0f0857112136f5b8b1bc1d45918] x86/mm/pat: Ensure cpa->pfn only contains page frame numbers > > git bisect bad edc3b9129cecd0f0857112136f5b8b1bc1d45918 > > # bad: [21cdb6b568435738cc0b303b2b3b82742396310c] x86/mm: Page align the '_end' symbol to avoid pfn conversion bugs > > git bisect bad 21cdb6b568435738cc0b303b2b3b82742396310c > > # first bad commit: [21cdb6b568435738cc0b303b2b3b82742396310c] x86/mm: Page align the '_end' symbol to avoid pfn conversion bugs > > > > Not much info on the console, when the kernel hangs. > > What info is there? > > > Tried reverting Commit 21cdb6b56 "x86/mm: Page align the '_end' > > symbol to avoid pfn conversion bugs" but that doesnt help. > > Odd. Could you try booting the tip/x86/efi branch instead? There's > only a handful of patches on that branch so it should be pretty easy > to narrow down the problematic change. Yes, that would be nice, you can get it via: git checkout v4.4 git pull git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/efi Meanwhile I'm holding off on sending the pending EFI bits to Linus, conditional on the outcome of this regression report. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
