path: root/cmds-check.c
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authorFilipe David Borba Manana <>2013-06-26 17:41:36 +0100
committerChris Mason <>2013-07-05 10:01:04 -0400
commit4fbfcaa8beb901050612bc35a0c8bbc1f3b58188 (patch)
tree53b1e3d3f4c0ae5c298587a11101d10d592119fe /cmds-check.c
parent0bae08fdab01078bbc514be10319f87f552c4787 (diff)
Btrfs-progs: fix closing of devices
If a device could not be opened in volumes.c:read_one_dev(), a btrfs_device instance was allocated and added to the list of devices of the fs - however this device instance had its fd, name and label fields not initialized. This is problematic in disk-io.c:close_all_devices() as it tried to sync, fadvise and close the (invalid) fd of the device, and kfree() its name and label, which pointed to random memory locations. Thread 1 (Thread 0x7f0a3d2d1740 (LWP 23585)): #0 __GI___libc_free (mem=0xa5a5a5a5a5a5a5a5) at malloc.c:2970 #1 0x000000000042054b in close_all_devices (fs_info=0x1e92bf0) at disk-io.c:1276 #2 0x0000000000421dcd in close_ctree (root=<optimized out>) at disk-io.c:1336 #3 0x0000000000418cfa in cmd_check (argc=<optimized out>, argv=<optimized out>) at cmds-check.c:4171 #4 0x0000000000403ed4 in main (argc=2, argv=0x7fff9a583d28) at btrfs.c:295 v2: Added Liu Bo's review mention. Reviewed-by: Liu Bo <> Signed-off-by: Filipe David Borba Manana <> Signed-off-by: Chris Mason <>
Diffstat (limited to 'cmds-check.c')
0 files changed, 0 insertions, 0 deletions