Ivan Delalande 6bb4132116 proc/sysctl: don't return ENOMEM on lookup when a table is unregistering ... commit ea5751ccd6 upstream. proc_sys_lookup can fail with ENOMEM instead of ENOENT when the corresponding sysctl table is being unregistered. In our case we see this upon opening /proc/sys/net/*/conf files while network interfaces are being deleted, which confuses our configuration daemon. The problem was successfully reproduced and this fix tested on v4.9.122 and v4.20-rc6. v2: return ERR_PTRs in all cases when proc_sys_make_inode fails instead of mixing them with NULL. Thanks Al Viro for the feedback. Fixes: ace0c791e6 ("proc/sysctl: Don't grab i_lock under sysctl_lock.") Cc: stable@vger.kernel.org Signed-off-by: Ivan Delalande <colona@arista.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-12-29 13:37:59 +01:00
..
array.c	proc: use "unsigned int" for sigqueue length	2018-06-07 17:34:38 -07:00
base.c	proc: restrict kernel stack dumps to root	2018-10-05 16:32:05 -07:00
cmdline.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
consoles.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
cpuinfo.c	x86 / CPU: Always show current CPU frequency in /proc/cpuinfo	2017-11-15 19:46:50 +01:00
devices.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
fd.c	proc: use "unsigned int" in proc_fill_cache()	2018-06-07 17:34:38 -07:00
fd.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
generic.c	proc: smaller readlock section in readdir("/proc")	2018-08-22 10:52:45 -07:00
inode.c	proc: fixup PDE allocation bloat	2018-08-22 10:52:45 -07:00
internal.h	proc: spread "const" a bit	2018-08-22 10:52:46 -07:00
interrupts.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
Kconfig	proc/kcore: add vmcoreinfo note to /proc/kcore	2018-08-22 10:52:46 -07:00
kcore.c	fs/proc/kcore.c: fix invalid memory access in multi-page read optimization	2018-09-20 22:01:11 +02:00
kmsg.c	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
loadavg.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
Makefile	proc: : uninline name_to_int()	2017-11-17 16:10:00 -08:00
meminfo.c	/proc/meminfo: add percpu populated pages count	2018-08-22 10:52:45 -07:00
namespaces.c	procfs: switch instantiate_t to d_splice_alias()	2018-05-26 14:20:50 -04:00
nommu.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
page.c	mm: mark pages in use for page tables	2018-06-07 17:34:37 -07:00
proc_net.c	proc: Add a way to make network proc files writable	2018-05-18 11:46:15 +01:00
proc_sysctl.c	proc/sysctl: don't return ENOMEM on lookup when a table is unregistering	2018-12-29 13:37:59 +01:00
proc_tty.c	tty: replace ->proc_fops with ->proc_show	2018-05-16 07:24:30 +02:00
root.c	proc: Make inline name size calculation automatic	2018-06-15 00:48:57 -04:00
self.c	proc: introduce a proc_pid_ns helper	2018-05-16 07:23:35 +02:00
softirqs.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
stat.c	proc: use "unsigned int" in /proc/stat hook	2018-08-22 10:52:46 -07:00
task_mmu.c	mm: /proc/pid/smaps_rollup: fix NULL pointer deref in smaps_pte_range()	2018-11-13 11:08:46 -08:00
task_nommu.c	mm: /proc/pid/*maps remove is_pid and related wrappers	2018-08-22 10:52:44 -07:00
thread_self.c	proc: introduce a proc_pid_ns helper	2018-05-16 07:23:35 +02:00
uptime.c	fs/proc/uptime.c: use ktime_get_boottime_ts64	2018-08-22 10:52:45 -07:00
util.c	proc: use do-while in name_to_int()	2017-11-17 16:10:00 -08:00
version.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
vmcore.c	fs/proc/vmcore.c: hide vmcoredd_mmap_dumps() for nommu builds	2018-08-23 18:48:43 -07:00