lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 3 Nov 2020 22:17:47 +0100 From: Paweł Jasiak <pawel@...iak.xyz> To: Jan Kara <jack@...e.cz> Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, x86@...nel.org, Thomas Gleixner <tglx@...utronix.de>, Brian Gerst <brgerst@...il.com>, Andy Lutomirski <luto@...nel.org> Subject: Re: PROBLEM: fanotify_mark EFAULT on x86 I have written small patch that fixes problem for me and doesn't break x86_64. diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 3e01d8f2ab90..cf0b97309975 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -1285,12 +1285,27 @@ static int do_fanotify_mark(int fanotify_fd, unsigned int flags, __u64 mask, return ret; } +#if defined(CONFIG_X86) && !defined(CONFIG_64BIT) +SYSCALL_DEFINE6(fanotify_mark, + int, fanotify_fd, unsigned int, flags, __u32, mask0, + __u32, mask1, int, dfd, const char __user *, pathname) +{ + return do_fanotify_mark(fanotify_fd, flags, +#ifdef __BIG_ENDIAN + ((__u64)mask0 << 32) | mask1, +#else + ((__u64)mask1 << 32) | mask0, +#endif + dfd, pathname); +} +#else SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, __u64, mask, int, dfd, const char __user *, pathname) { return do_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname); } +#endif #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE6(fanotify_mark, -- Paweł Jasiak
Powered by blists - more mailing lists