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authorJosh Poimboeuf <jpoimboe@redhat.com>2017-03-01 00:05:04 -0600
committerIngo Molnar <mingo@kernel.org>2017-03-01 14:20:18 +0100
commit55149d06534ae2a7ba5f7a078353deb89b3fe891 (patch)
tree790133e15f28b26db448d1157b4953e881ef2fa0 /scripts
parent2d6be4abf514fc26c83d239c7f31da1f95e4a31d (diff)
downloadlinux-55149d06534ae2a7ba5f7a078353deb89b3fe891.tar.bz2
objtool, compiler.h: Fix __unreachable section relocation size
Linus reported the following commit broke module loading on his laptop: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends") It showed errors like the following: module: overflow in relocation type 10 val ffffffffc02afc81 module: 'nvme' likely not compiled with -mcmodel=kernel The problem is that the __unreachable section addresses are stored using the '.long' asm directive, which isn't big enough for .text section kernel addresses. Use relative addresses instead: ".long %c0b - .\t\n" Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends") Link: http://lkml.kernel.org/r/20170301060504.oltm3iws6fmubnom@treble Signed-off-by: Ingo Molnar <mingo@kernel.org>
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