The patch titled ldm: corrupted partition table can cause kernel oops has been added to the -mm tree. Its filename is ldm-corrupted-partition-table-can-cause-kernel-oops.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: ldm: corrupted partition table can cause kernel oops From: Timo Warns <Warns@xxxxxxxxxxxx> The kernel automatically evaluates partition tables of storage devices. The code for evaluating LDM partitions (in fs/partitions/ldm.c) contains a bug that causes a kernel oops on certain corrupted LDM partitions. A kernel subsystem seems to crash, because, after the oops, the kernel no longer recognizes newly connected storage devices. The patch changes ldm_parse_vmdb() to Validate the value of vblk_size. Signed-off-by: Timo Warns <warns@xxxxxxxxxxxx> Cc: Eugene Teo <eugeneteo@xxxxxxxxx> Acked-by: Richard Russon <ldm@xxxxxxxxxxx> Cc: Harvey Harrison <harvey.harrison@xxxxxxxxx> Cc: <stable@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/partitions/ldm.c | 5 +++++ 1 file changed, 5 insertions(+) diff -puN fs/partitions/ldm.c~ldm-corrupted-partition-table-can-cause-kernel-oops fs/partitions/ldm.c --- a/fs/partitions/ldm.c~ldm-corrupted-partition-table-can-cause-kernel-oops +++ a/fs/partitions/ldm.c @@ -251,6 +251,11 @@ static bool ldm_parse_vmdb (const u8 *da } vm->vblk_size = get_unaligned_be32(data + 0x08); + if (vm->vblk_size == 0) { + ldm_error ("Illegal VBLK size"); + return false; + } + vm->vblk_offset = get_unaligned_be32(data + 0x0C); vm->last_vblk_seq = get_unaligned_be32(data + 0x04); _ Patches currently in -mm which might be from Warns@xxxxxxxxxxxx are ldm-corrupted-partition-table-can-cause-kernel-oops.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html