https://github.com/torvalds/linux
Revision 9d42d48a342aee208c1154696196497fdc556bbf authored by Catalin Marinas on 23 February 2015, 15:13:40 UTC, committed by Catalin Marinas on 27 February 2015, 18:05:56 UTC
The native (64-bit) sigval_t union contains sival_int (32-bit) and sival_ptr (64-bit). When a compat application invokes a syscall that takes a sigval_t value (as part of a larger structure, e.g. compat_sys_mq_notify, compat_sys_timer_create), the compat_sigval_t union is converted to the native sigval_t with sival_int overlapping with either the least or the most significant half of sival_ptr, depending on endianness. When the corresponding signal is delivered to a compat application, on big endian the current (compat_uptr_t)sival_ptr cast always returns 0 since sival_int corresponds to the top part of sival_ptr. This patch fixes copy_siginfo_to_user32() so that sival_int is copied to the compat_siginfo_t structure. Cc: <stable@vger.kernel.org> Reported-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com> Tested-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
1 parent a1e50a8
Tip revision: 9d42d48a342aee208c1154696196497fdc556bbf authored by Catalin Marinas on 23 February 2015, 15:13:40 UTC
arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian
arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian
Tip revision: 9d42d48
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drivers | ||
firmware | ||
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include | ||
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kernel | ||
lib | ||
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net | ||
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COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 94.0 KB |
Kbuild | -rw-r--r-- | 2.1 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 298.0 KB |
Makefile | -rw-r--r-- | 53.3 KB |
README | -rw-r--r-- | 18.3 KB |
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