Alexey Dobriyan
1da4d377f9
proc: revalidate misc dentries ...
If module removes proc directory while another process pins it by
chdir'ing to it, then subsequent recreation of proc entry and all
entries down the tree will not be visible to any process until pinning
process unchdir from directory and unpins everything.
Steps to reproduce:
proc_mkdir("aaa", NULL);
proc_create("aaa/bbb", ...);
chdir("/proc/aaa");
remove_proc_entry("aaa/bbb", NULL);
remove_proc_entry("aaa", NULL);
proc_mkdir("aaa", NULL);
# inaccessible because "aaa" dentry still points
# to the original "aaa".
proc_create("aaa/bbb", ...);
Fix is to implement ->d_revalidate and ->d_delete.
Link: http://lkml.kernel.org/r/20180312201938.GA4871@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13 17:10:27 -07:00
proc: replace seq_printf by seq_put_smth to speed up /proc/pid/status
2018-04-11 10:28:33 -07:00
proc: do mmput ASAP for /proc/*/map_files
2018-04-11 10:28:34 -07:00
proc: faster /proc/cmdline
2018-04-11 10:28:34 -07:00
fs/proc/consoles.c: use seq_putc() in show_console_dev()
2018-02-06 18:32:44 -08:00
x86 / CPU: Always show current CPU frequency in /proc/cpuinfo
2017-11-15 19:46:50 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
proc: use %u for pid printing and slightly less stack
2018-02-06 18:32:43 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
proc: revalidate misc dentries
2018-04-13 17:10:27 -07:00
proc: move "struct proc_dir_entry" into kmem cache
2018-04-11 10:28:34 -07:00
proc: use slower rb_first()
2018-04-11 10:28:34 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vfs/proc/kcore, x86/mm/kcore: Fix SMAP fault when dumping vsyscall user page
2018-02-13 09:15:58 +01:00
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
pid: replace pid bitmap implementation with IDR API
2017-11-17 16:10:03 -08:00
proc: : uninline name_to_int()
2017-11-17 16:10:00 -08:00
proc: add seq_put_decimal_ull_width to speed up /proc/pid/smaps
2018-04-11 10:28:33 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
proc: use slower rb_first()
2018-04-11 10:28:34 -07:00
fs/proc/proc_sysctl.c: fix typo in sysctl_check_table_array()
2018-04-11 10:28:38 -07:00
TTY/Serial patches for 4.15-rc1
2017-11-13 21:05:31 -08:00
proc: use slower rb_first()
2018-04-11 10:28:34 -07:00
fs/proc: use __ro_after_init
2018-02-06 18:32:43 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
proc: replace seq_printf on seq_putc to speed up /proc/pid/smaps
2018-04-11 10:28:33 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fs/proc: use __ro_after_init
2018-02-06 18:32:43 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
proc: use do-while in name_to_int()
2017-11-17 16:10:00 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fs/proc/vmcore.c: simpler /proc/vmcore cleanup
2018-02-06 18:32:43 -08:00
1da4d377f9