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| author |   Ard Biesheuvel <ardb@kernel.org> | 2021-10-29 17:45:32 +0100 |
|---|---|---|
| committer |   Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2021-10-30 11:24:36 +0100 |
| commit | fa191b711c32ba107cf8d3474cd860407b7e997a (patch) | |
| tree | 9c3e7f819f8f78e7acaf00cc34c77d147b754a76 /arch/arm/include/asm/checksum.h | |
| parent | Merge tag 'pr-arm32-ti-in-task' of git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux into devel-stable (diff) | |
| download | linux-dev-fa191b711c32ba107cf8d3474cd860407b7e997a.tar.xz linux-dev-fa191b711c32ba107cf8d3474cd860407b7e997a.zip | |
ARM: 9150/1: Fix PID_IN_CONTEXTIDR regression when THREAD_INFO_IN_TASK=y
The code that implements the rarely used PID_IN_CONTEXTIDR feature
dereferences the 'task' field of struct thread_info directly, and this
is no longer possible when THREAD_INFO_IN_TASK=y, as the 'task' field is
omitted from the struct definition in that case. Instead, we should just
cast the thread_info pointer to a task_struct pointer, given that the
former is now the first member of the latter.
So use a helper that abstracts this, and provide implementations for
both cases.
Reported by: Arnd Bergmann <arnd@arndb.de>
Fixes: 18ed1c01a7dd ("ARM: smp: Enable THREAD_INFO_IN_TASK")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/checksum.h')
0 files changed, 0 insertions, 0 deletions