Ma Wupeng bc8f5921cd ipc: fix memleak if msg_init_ns failed in create_ipc_ns ... Percpu memory allocation may failed during create_ipc_ns however this fail is not handled properly since ipc sysctls and mq sysctls is not released properly. Fix this by release these two resource when failure. Here is the kmemleak stack when percpu failed: unreferenced object 0xffff88819de2a600 (size 512): comm "shmem_2nstest", pid 120711, jiffies 4300542254 hex dump (first 32 bytes): 60 aa 9d 84 ff ff ff ff fc 18 48 b2 84 88 ff ff `.........H..... 04 00 00 00 a4 01 00 00 20 e4 56 81 ff ff ff ff ........ .V..... backtrace (crc be7cba35): [<ffffffff81b43f83>] __kmalloc_node_track_caller_noprof+0x333/0x420 [<ffffffff81a52e56>] kmemdup_noprof+0x26/0x50 [<ffffffff821b2f37>] setup_mq_sysctls+0x57/0x1d0 [<ffffffff821b29cc>] copy_ipcs+0x29c/0x3b0 [<ffffffff815d6a10>] create_new_namespaces+0x1d0/0x920 [<ffffffff815d7449>] copy_namespaces+0x2e9/0x3e0 [<ffffffff815458f3>] copy_process+0x29f3/0x7ff0 [<ffffffff8154b080>] kernel_clone+0xc0/0x650 [<ffffffff8154b6b1>] __do_sys_clone+0xa1/0xe0 [<ffffffff843df8ff>] do_syscall_64+0xbf/0x1c0 [<ffffffff846000b0>] entry_SYSCALL_64_after_hwframe+0x4b/0x53 Link: https://lkml.kernel.org/r/20241023093129.3074301-1-mawupeng1@huawei.com Fixes: 72d1e61108 ("ipc/msg: mitigate the lock contention with percpu counter") Signed-off-by: Ma Wupeng <mawupeng1@huawei.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2024-11-05 17:12:33 -08:00
..
compat.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ipc_sysctl.c	sysctl: treewide: constify the ctl_table argument of proc_handlers	2024-07-24 20:59:29 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mq_sysctl.c	Mainly singleton patches, documented in their respective changelogs.	2024-05-19 14:02:03 -07:00
mqueue.c	introduce fd_file(), convert all accessors to it.	2024-08-12 22:00:43 -04:00
msg.c	ipc/msg: replace one-element array with flexible array member	2024-11-05 17:12:28 -08:00
msgutil.c	ipc, msg: Use dedicated slab buckets for alloc_msg()	2024-07-03 12:24:20 +02:00
namespace.c	ipc: fix memleak if msg_init_ns failed in create_ipc_ns	2024-11-05 17:12:33 -08:00
sem.c	ipc/sem: use flexible array in 'struct sem_undo'	2023-08-18 10:18:51 -07:00
shm.c	ipc/shm, mm: drop do_vma_munmap()	2024-09-03 21:15:52 -07:00
syscall.c	y2038: remove CONFIG_64BIT_TIME	2019-11-15 14:38:27 +01:00
util.c	ipc/util.c: cleanup and improve sysvipc_find_ipc()	2022-09-11 21:55:05 -07:00
util.h	sched.h: move pid helpers to pid.h	2023-12-20 19:26:31 -05:00