* [Bug 94791] New: syscall fanotify_mark overflow. @ 2015-03-12 9:40 bugzilla-daemon 2015-11-24 16:14 ` [Bug 94791] " bugzilla-daemon ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: bugzilla-daemon @ 2015-03-12 9:40 UTC (permalink / raw) To: linux-ext4 https://bugzilla.kernel.org/show_bug.cgi?id=94791 Bug ID: 94791 Summary: syscall fanotify_mark overflow. Product: File System Version: 2.5 Kernel Version: 4.x Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 Assignee: fs_ext4@kernel-bugs.osdl.org Reporter: du.guowei2@zte.com.cn Regression: No file: fanotify_usr.c: syscall function fanotify_mark,below code will overflow on 32-bit system. /* we only use the lower 32 bits as of right now. */ if ( mask & ((__u64)0xffffffff << 32)) return -EINVAL; include/linux/syscalls.h: asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, u64 mask, int fd, const char __usr *pathname); u64 mask ,should convert to unsigned int mask??? -- You are receiving this mail because: You are watching the assignee of the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug 94791] syscall fanotify_mark overflow. 2015-03-12 9:40 [Bug 94791] New: syscall fanotify_mark overflow bugzilla-daemon @ 2015-11-24 16:14 ` bugzilla-daemon 2015-12-01 11:07 ` bugzilla-daemon 2015-12-01 14:08 ` bugzilla-daemon 2 siblings, 0 replies; 4+ messages in thread From: bugzilla-daemon @ 2015-11-24 16:14 UTC (permalink / raw) To: linux-ext4 https://bugzilla.kernel.org/show_bug.cgi?id=94791 Tim Pickersgill <tim.pickersgill@sophos.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tim.pickersgill@sophos.com --- Comment #1 from Tim Pickersgill <tim.pickersgill@sophos.com> --- A __u64 value is an unsigned long long, a 64-bit integer, regardless of system bitness. Not sure how/why this would overflow on a 32-bit system. What symptoms are you seeing? We're using fanotify_mark() on 32-bit systems without seeing any issue here. -- You are receiving this mail because: You are watching the assignee of the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug 94791] syscall fanotify_mark overflow. 2015-03-12 9:40 [Bug 94791] New: syscall fanotify_mark overflow bugzilla-daemon 2015-11-24 16:14 ` [Bug 94791] " bugzilla-daemon @ 2015-12-01 11:07 ` bugzilla-daemon 2015-12-01 14:08 ` bugzilla-daemon 2 siblings, 0 replies; 4+ messages in thread From: bugzilla-daemon @ 2015-12-01 11:07 UTC (permalink / raw) To: linux-ext4 https://bugzilla.kernel.org/show_bug.cgi?id=94791 --- Comment #2 from Tim Pickersgill <tim.pickersgill@sophos.com> --- Not an ext4 issue, I'd suggest that this be reclassified as "Other" and assigned to "fs_other@kernel-bugs.osdl.org" or Eric Paris (eparis@redhat.com) -- You are receiving this mail because: You are watching the assignee of the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug 94791] syscall fanotify_mark overflow. 2015-03-12 9:40 [Bug 94791] New: syscall fanotify_mark overflow bugzilla-daemon 2015-11-24 16:14 ` [Bug 94791] " bugzilla-daemon 2015-12-01 11:07 ` bugzilla-daemon @ 2015-12-01 14:08 ` bugzilla-daemon 2 siblings, 0 replies; 4+ messages in thread From: bugzilla-daemon @ 2015-12-01 14:08 UTC (permalink / raw) To: linux-ext4 https://bugzilla.kernel.org/show_bug.cgi?id=94791 --- Comment #3 from Tim Pickersgill <tim.pickersgill@sophos.com> --- Tinkering with Eric Paris's fanotify-example (http://git.infradead.org/users/eparis/fanotify-example.git), to forcibly set higher bits in the mask passed to fanotify_mark(), the call correctly returns -EINVAL on both 32- and 64-bit kernels. Suggest this bug should be rejected unless a failing example can be provided. -- You are receiving this mail because: You are watching the assignee of the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-12-01 14:09 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-03-12 9:40 [Bug 94791] New: syscall fanotify_mark overflow bugzilla-daemon 2015-11-24 16:14 ` [Bug 94791] " bugzilla-daemon 2015-12-01 11:07 ` bugzilla-daemon 2015-12-01 14:08 ` bugzilla-daemon
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