Messages in this thread Patch in this message | | | Date | Mon, 29 Oct 2012 20:45:38 +0000 | From | Tvrtko Ursulin <> | Subject | Re: [dm-crypt] cryptsetup not working under 3.6 - RT patch set seem to break it |
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On 29/10/12 20:14, Tvrtko Ursulin wrote: > On 29/10/12 19:47, Milan Broz wrote: >> On 10/29/2012 08:31 PM, Tvrtko Ursulin wrote: >>> Just tried 3.6.4 and it is still broken. Is there anything else I could >>> try to debug this? >> >> See response from response from Ondra on dmcrypt list - your kernel >> config >> is perhaps broken. > > I don't think that reached me - perhaps I was not copied. > > Weird yes, I mean no one can spot anything bad with my config... > >> Please use fresh checkout, run make oldconfig and try again. >> (Many people use 3.6 already and there is no other report.) > > ... and I just used it today to configure a fresh 3.6.4 (plus -rt10 > patches) without a problem. > > Unless RT patchset is the culprit. Hm.. that would be unexpected, but I > guess it is worth a shot. I'll let you know what happens without -rt.
Ha, this is exciting, vanilla 3.6.4 works, with -rt10 patch it does not.
Copying in linux-rt-users.
To recap, 3.6 RT seems to break dm-crypt. Try it like this:
cryptsetup --debug --key-file=- luksOpen /some/luks/formatted/file any-label
And kernel will fail like this:
Kernel says this: device-mapper: table: 252:1: crypt: Error allocating crypto tfm device-mapper: ioctl: error adding target to table
I think crypto modules are not getting auto loaded for some reason, but even if I load them manually before hand and still breaks in the same way.
Maybe someone will have a "ah yes" moment? Here is the diff between working (vanilla 3.6.4) and non-working (3.6.4-rt10) configs:
--- 1 2012-10-29 20:37:49.472306922 +0000 +++ 2 2012-10-29 20:37:52.319732779 +0000 @@ -892,7 +892,6 @@ # CONFIG_DEBUG_SECTION_MISMATCH is not set # CONFIG_DEBUG_SET_MODULE_RONX is not set # CONFIG_DEBUG_SG is not set -# CONFIG_DEBUG_SHIRQ is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_STACKOVERFLOW is not set # CONFIG_DEBUG_STACK_USAGE is not set @@ -1810,7 +1809,7 @@ CONFIG_MTRR_SANITIZER=y CONFIG_MTRR=y # CONFIG_MULTICORE_RAID456 is not set -CONFIG_MUTEX_SPIN_ON_OWNER=y +# CONFIG_MUTEX_SPIN_ON_OWNER is not set # CONFIG_MWAVE is not set CONFIG_NAMESPACES=y CONFIG_NATIONAL_PHY=y @@ -1842,7 +1841,6 @@ CONFIG_NET_CLS_TCINDEX=m CONFIG_NET_CLS_U32=m CONFIG_NET_CLS=y -# CONFIG_NETCONSOLE is not set CONFIG_NET_CORE=y CONFIG_NETDEVICES=y # CONFIG_NET_DSA is not set @@ -2260,9 +2258,13 @@ CONFIG_PPP=y # CONFIG_PPS is not set CONFIG_PREEMPT_COUNT=y +# CONFIG_PREEMPT__LL is not set # CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_NOTIFIERS=y CONFIG_PREEMPT_RCU=y +CONFIG_PREEMPT_RT_BASE=y +# CONFIG_PREEMPT_RTB is not set +CONFIG_PREEMPT_RT_FULL=y # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREVENT_FIRMWARE_BUILD=y @@ -2368,11 +2370,10 @@ CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_LIB=y -# CONFIG_RT_GROUP_SCHED is not set CONFIG_RT_MUTEXES=y # CONFIG_RT_MUTEX_TESTER is not set -# CONFIG_RWSEM_GENERIC_SPINLOCK is not set -CONFIG_RWSEM_XCHGADD_ALGORITHM=y +CONFIG_RWSEM_GENERIC_SPINLOCK=y +# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set # CONFIG_SAMPLES is not set # CONFIG_SATA_ACARD_AHCI is not set CONFIG_SATA_AHCI=m @@ -2851,7 +2852,6 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y # CONFIG_TRACE_SINK is not set CONFIG_TRACING_SUPPORT=y -# CONFIG_TRANSPARENT_HUGEPAGE is not set CONFIG_TREE_PREEMPT_RCU=y # CONFIG_TREE_RCU_TRACE is not set CONFIG_TUN=y @@ -2867,7 +2867,6 @@ CONFIG_UID16=y # CONFIG_UIO is not set # CONFIG_ULTRIX_PARTITION is not set -CONFIG_UNINLINE_SPIN_UNLOCK=y CONFIG_UNIX98_PTYS=y CONFIG_UNIX_DIAG=y # CONFIG_UNIXWARE_DISKLABEL is not set No crypto related differences.
Tvrtko
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