diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2022-04-25 08:07:36 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2022-04-25 11:27:42 +0200 |
| commit | 0ede5bfc57b8910f6436a23955422fae109636c2 (patch) | |
| tree | b733de305f3c59d2b5835d815a0ccbbbe6b3fef6 /sys/linux/init_test.go | |
| parent | f3819cab601e2cd12383bf4e307988c3e3732dd4 (diff) | |
dashboard/config/linux: disable MSR writes
Randomly changing MSRs can have unpredictable results.
We tried to protect from writes on descriptions level,
but it does not work well, the fuzzer has figured out:
03:37:28 executing program 3:
syz_open_dev$MSR(&(0x7f0000000040), 0x0, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000180)='fd/3\x00')
pwritev(r0, ...)
Fortunately there is a command line argument that disables all writes.
Use it instead.
Note: older kernels will need:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a7e1f67ed29f
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=02a16aa13574
Diffstat (limited to 'sys/linux/init_test.go')
| -rw-r--r-- | sys/linux/init_test.go | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/sys/linux/init_test.go b/sys/linux/init_test.go index 8c236af5d..8c4c07ba4 100644 --- a/sys/linux/init_test.go +++ b/sys/linux/init_test.go @@ -133,19 +133,6 @@ syz_open_dev$tty1(0xc, 0x4, 0x1) `, }, { - In: `syz_open_dev$MSR(0x0, 0x0, 0x0)`, - }, - { - In: ` -ioctl$X86_IOC_RDMSR_REGS(0xa, 0xc02063a0, 0x0) -ioctl$X86_IOC_RDMSR_REGS(0xa, 0xc02063a1, 0x0) -`, - Out: ` -ioctl$X86_IOC_RDMSR_REGS(0xa, 0xc02063a0, 0x0) -ioctl$X86_IOC_RDMSR_REGS(0xa, 0xc02063a0, 0x0) -`, - }, - { In: `sched_setattr(0x0, &(0x7f00000002c0)={0x0, 0x1, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x0)`, Out: `sched_setattr(0x0, &(0x7f00000002c0)={0x0, 0x0, 0x0, 0x0, 0x3}, 0x0)`, }, |