Revision 757fed1d0898b893d7daa84183947c70f27632f3 authored by Wang Hai on 28 January 2021, 11:32:50 UTC, committed by Linus Torvalds on 28 January 2021, 17:05:44 UTC
This reverts commit dde3c6b72a16c2db826f54b2d49bdea26c3534a2. syzbot report a double-free bug. The following case can cause this bug. - mm/slab_common.c: create_cache(): if the __kmem_cache_create() fails, it does: out_free_cache: kmem_cache_free(kmem_cache, s); - but __kmem_cache_create() - at least for slub() - will have done sysfs_slab_add(s) -> sysfs_create_group() .. fails .. -> kobject_del(&s->kobj); .. which frees s ... We can't remove the kmem_cache_free() in create_cache(), because other error cases of __kmem_cache_create() do not free this. So, revert the commit dde3c6b72a16 ("mm/slub: fix a memory leak in sysfs_slab_add()") to fix this. Reported-by: syzbot+d0bd96b4696c1ef67991@syzkaller.appspotmail.com Fixes: dde3c6b72a16 ("mm/slub: fix a memory leak in sysfs_slab_add()") Acked-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Wang Hai <wanghai38@huawei.com> Cc: <stable@vger.kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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File | Mode | Size |
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hci | ||
nci | ||
Kconfig | -rw-r--r-- | 845 bytes |
Makefile | -rw-r--r-- | 374 bytes |
af_nfc.c | -rw-r--r-- | 1.8 KB |
core.c | -rw-r--r-- | 24.5 KB |
digital.h | -rw-r--r-- | 5.2 KB |
digital_core.c | -rw-r--r-- | 20.0 KB |
digital_dep.c | -rw-r--r-- | 34.2 KB |
digital_technology.c | -rw-r--r-- | 26.4 KB |
llcp.h | -rw-r--r-- | 6.7 KB |
llcp_commands.c | -rw-r--r-- | 16.2 KB |
llcp_core.c | -rw-r--r-- | 34.0 KB |
llcp_sock.c | -rw-r--r-- | 22.0 KB |
netlink.c | -rw-r--r-- | 39.4 KB |
nfc.h | -rw-r--r-- | 4.4 KB |
rawsock.c | -rw-r--r-- | 8.9 KB |
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