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| author | Dmitry V. Levin <ldv@altlinux.org> | 2017-08-05 23:00:50 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-08-06 11:48:27 -0700 |
| commit | fbb77611e95d3d5b2af86a59754a3130877cb667 (patch) | |
| tree | 026bc121b112736776c5de03463ce52fa4424280 /fs | |
| parent | 0fdd951c9bef93637d5af036851e7a5632fbd6c3 (diff) | |
| download | linux-fbb77611e95d3d5b2af86a59754a3130877cb667.tar.gz | |
Fix compat_sys_sigpending breakage
The latest change of compat_sys_sigpending in commit 8f13621abced
("sigpending(): move compat to native") has broken it in two ways.
First, it tries to write 4 bytes more than userspace expects:
sizeof(old_sigset_t) == sizeof(long) == 8 instead of
sizeof(compat_old_sigset_t) == sizeof(u32) == 4.
Second, on big endian architectures these bytes are being written in the
wrong order.
This bug was found by strace test suite.
Reported-by: Anatoly Pugachev <matorola@gmail.com>
Inspired-by: Eugene Syromyatnikov <evgsyr@gmail.com>
Fixes: 8f13621abced ("sigpending(): move compat to native")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions