Revision 156cacb1d0d36b0d0582d9e798e58e0044f516b3 authored by Al Viro on 21 September 2012, 12:19:02 UTC, committed by Al Viro on 23 September 2012, 00:48:18 UTC
normally we deal with lock_mount()/umount races by checking that mountpoint to be is still in our namespace after lock_mount() has been done. However, do_add_mount() skips that check when called with MNT_SHRINKABLE in flags (i.e. from finish_automount()). The reason is that ->mnt_ns may be a temporary namespace created exactly to contain automounts a-la NFS4 referral handling. It's not the namespace of the caller, though, so check_mnt() would fail here. We still need to check that ->mnt_ns is non-NULL in that case, though. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 230 bytes |
| cache-page.c | -rw-r--r-- | 1.9 KB |
| dma-alloc.c | -rw-r--r-- | 4.5 KB |
| elf-fdpic.c | -rw-r--r-- | 3.4 KB |
| extable.c | -rw-r--r-- | 2.4 KB |
| fault.c | -rw-r--r-- | 8.0 KB |
| highmem.c | -rw-r--r-- | 2.0 KB |
| init.c | -rw-r--r-- | 5.8 KB |
| kmap.c | -rw-r--r-- | 1.3 KB |
| mmu-context.c | -rw-r--r-- | 5.2 KB |
| pgalloc.c | -rw-r--r-- | 3.9 KB |
| tlb-flush.S | -rw-r--r-- | 4.3 KB |
| tlb-miss.S | -rw-r--r-- | 18.5 KB |
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