[PATCH v2 1/2] util/getauxval: Ensure setting errno if not found

Sometimes zero is a valid value for getauxval (e.g. AT_EXECFD). Make sure that we can distinguish between a valid zero value and a not found entry by setting errno. Assumes that getauxval from sys/auxv.h sets errno correctly. Signed-off-by: Vivian Wang --- util/getauxval.c | 6 +- 1 file

[PATCH v2 0/2] linux-user: Fix handling when AT_EXECFD is 0

qemu-devel/20240721090817.120888-1-...@dram.page/ Vivian Wang (2): util/getauxval: Ensure setting errno if not found linux-user/main: Check errno when getting AT_EXECFD linux-user/main.c | 3 ++- util/getauxval.c | 6 +- 2 files changed, 7 insertions(+), 2 deletions(-) -- 2.45.1

[PATCH v2 2/2] linux-user/main: Check errno when getting AT_EXECFD

It's possible for AT_EXECFD to end up with a valid value of 0. Check errno when using qemu_getauxval instead of return value to handle this case. Not handling this case leads to a confusing condition where the executable ends up as fd 0, i.e. stdin. Signed-off-by: Vivian Wang Review

Re: [PATCH 1/2] util/getauxval: Ensure setting errno if not found

On 7/22/24 08:18, Xingtao Yao (Fujitsu) wrote: > >> -Original Message- >> From: qemu-devel-bounces+yaoxt.fnst=fujitsu@nongnu.org >> On Behalf Of Vivian >> Wang >> Sent: Sunday, July 21, 2024 5:08 PM >> To: qemu-devel@nongnu.org >> Cc:

[PATCH 2/2] linux-user/main: Check errno when getting AT_EXECFD

It's possible for AT_EXECFD to end up with a valid value of 0. Check errno when using qemu_getauxval instead of return value to handle this case. Not handling this case leads to a confusing condition where the executable ends up as fd 0, i.e. stdin. Signed-off-by: Vivian Wang

[PATCH 1/2] util/getauxval: Ensure setting errno if not found

Sometimes zero is a valid value for getauxval (e.g. AT_EXECFD). Make sure that we can distinguish between a valid zero value and a not found entry by setting errno. Ignore getauxval from sys/auxv.h on glibc < 2.19 because it does not set errno. Signed-off-by: Vivian Wang --- util/getauxva

[PATCH 0/2] linux-user: Fix handling when AT_EXECFD is 0

Found when trying to build coreutils under linux-user as binfmt_misc interpreter with "open-binary" flag. I'm unsure whether the version detection in patch 1 makes sense. Please advise on how to handle situations like this. Resolves: https://gitlab.com/qemu-project/qemu/-/issu

Re: [PATCH v6 00/21] linux-user: Fix siginfo_t contents when jumping to non-readable pages

ch that .align+.org > wasn't actually honored. This new form doesn't require the > test bytes to be aligned in the binary. > > > r~ I've confirmed that this fixes #1155 Tested-by: Vivian Wang > Ilya Leoshkevich (4): > linux-user: Clear translations a

Re: [PATCH v5 0/4] linux-user: Fix siginfo_t contents when jumping to non-readable pages

On 8/17/22 23:05, Ilya Leoshkevich wrote: > Hi, > > I noticed that when we get a SEGV due to jumping to non-readable > memory, sometimes si_addr and program counter in siginfo_t are slightly > off. I tracked this down to the assumption that translators stop before > the end of a page, while in real