diff options
| author | Alexander Potapenko <glider@google.com> | 2023-05-09 11:29:45 +0200 |
|---|---|---|
| committer | Alexander Potapenko <ramosian.glider@gmail.com> | 2023-05-09 12:45:33 +0200 |
| commit | 30aa2a7ee322e62aaed06c29bf8a57b802dca8c2 (patch) | |
| tree | 539e5390008083b575b92907a20c94f691491ac7 /dashboard/config/linux/bits | |
| parent | 8d2f31fec94a28399e75d783d1d6231711da649f (diff) | |
dashboard/config/linux: disable CONFIG_STACKPROTECTOR for KMSAN
Linux v6.4-rc1 built with Clang versions <= 16 with stack protector
enabled panic with the following stack trace:
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: start_kernel+0xd8a/0xd90
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.3.0-rc1-00042-g9ea7e6b62c2b-dirty #106
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88
dump_stack_lvl+0x1bc/0x250 lib/dump_stack.c:106
dump_stack+0x1e/0x20 lib/dump_stack.c:113
panic+0x4cd/0xc10 kernel/panic.c:340
__stack_chk_fail+0x18/0x20 kernel/panic.c:759
start_kernel+0xd8a/0xd90 init/main.c:?
x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:556
x86_64_start_kernel+0x118/0x120 arch/x86/kernel/head64.c:537
secondary_startup_64_no_verify+0xcf/0xdb arch/x86/kernel/head_64.S:358
</TASK>
https://github.com/ClangBuiltLinux/linux/issues/1815 describes the
problem, which is fixed on the Clang side
(https://reviews.llvm.org/D147975), but before the fix reaches syzbot
we'll have to keep the stack protector disabled.
Diffstat (limited to 'dashboard/config/linux/bits')
| -rw-r--r-- | dashboard/config/linux/bits/kmsan.yml | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/dashboard/config/linux/bits/kmsan.yml b/dashboard/config/linux/bits/kmsan.yml index 1e1ae12eb..96822f002 100644 --- a/dashboard/config/linux/bits/kmsan.yml +++ b/dashboard/config/linux/bits/kmsan.yml @@ -5,7 +5,7 @@ compiler: /usr/bin/clang kernel: repo: https://github.com/google/kmsan.git - tag: kmsan-v6.2-rc7 + tag: kmsan-v6.4-rc1 config: - KMSAN @@ -26,6 +26,10 @@ config: - HARDENED_USERCOPY: [n, weak] - HARDENED_USERCOPY_FALLBACK: [n, weak] + # Stack protector is broken in Clang before version 17. + # See https://github.com/ClangBuiltLinux/linux/issues/1815 for details. + - STACKPROTECTOR: n + # KMSAN doesn't support ORC unwinder (https://github.com/google/kmsan/issues/48). - UNWINDER_FRAME_POINTER |