[tpm2] Re: tpm2_flushcontext stuck
Juergen Repp <Juergen.Repp at sit.fraunhofer.de>
| Newsgroups | dev.linux.lists.tpm2 |
|---|---|
| Message-ID | <[email protected]> |
I forgot to mention: If /dev/tpm0 was used instead of /dev/tpmrm0 everything worked without problems.
Am 18.12.21 um 00:58 schrieb Han:
>
> On Fri, Dec 17, 2021 at 12:51 PM Roberts, William C <william.c.roberts(a)intel.com <mailto:william.c.roberts(a)intel.com>> wrote:
>
> I wonder if it's related to this bug, but manifesting itself differently:
> - https://github.com/tpm2-software/tpm2-tools/issues/1356 <https://github.com/tpm2-software/tpm2-tools/issues/1356>
>
>
> Not sure. The bug is reported on "tpm2-tools" 3.1.3 with Linux kernel 5.0. I'm using "tpm2-tools" 5.0 now with kernel 5.10.
>
>
> What version of the tpm2-tss libraries are you running? Do commands like tpm2_getrandom work?
>
>
> There are multiple tss libs on my system (see below), but I think it is 3.0.3. Yes commands like `tpm2_getrandom` work, including `tpm2_createprimary`.
>
> $ apt search tpm2 | grep tss
>
> WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
>
> libtss2-dev/stable 3.0.3-2 armhf
> libtss2-esys-3.0.2-0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-fapi1/stable 3.0.3-2 armhf
> libtss2-mu0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-rc0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-sys1/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-tcti-cmd0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-tcti-device0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-tcti-mssim0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-tcti-swtpm0/stable,now 3.0.3-2 armhf [installed,automatic]
> libtss2-tcti-tabrmd-dev/stable 2.3.3-1+b1 armhf
> libtss2-tcti-tabrmd0/stable 2.3.3-1+b1 armhf
> libtss2-tctildr0/stable,now 3.0.3-2 armhf [installed,automatic]
>
>
>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> *From:* Han <keepsimple(a)gmail.com <mailto:keepsimple(a)gmail.com>>
> *Sent:* Friday, December 17, 2021 2:04 PM
> *To:* Roberts, William C <william.c.roberts(a)intel.com <mailto:william.c.roberts(a)intel.com>>
> *Cc:* tpm2(a)lists.01.org <mailto:tpm2(a)lists.01.org> <tpm2(a)lists.01.org <mailto:tpm2(a)lists.01.org>>
> *Subject:* Re: [tpm2] tpm2_flushcontext stuck
>
> It seems stuck in a call of `poll()` at fd 3, which is /dev/tpmrm0 based on the log (see below). The kernel version is 5.10.63. Yes, I am using /dev/tpm0 and /dev/tpmrm0.
>
> $ sudo strace tpm2_flushcontext 0x80000000
>
> <snip>
>
> openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
> fstat64(3, {st_mode=S_IFREG|0644, st_size=72845, ...}) = 0
> mmap2(NULL, 72845, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6f74000
> close(3) = 0
> openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libtss2-tcti-device.so.0", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\08\n\0\0004\0\0\0"..., 512) = 512
> fstat64(3, {st_mode=S_IFREG|0644, st_size=22028, ...}) = 0
> mmap2(NULL, 86236, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb5f22000
> mprotect(0xb5f27000, 61440, PROT_NONE) = 0
> mmap2(0xb5f36000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0xb5f36000
> close(3) = 0
> mprotect(0xb5f36000, 4096, PROT_READ) = 0
> munmap(0xb6f74000, 72845) = 0
> openat(AT_FDCWD, "/dev/tpmrm0", O_RDWR|O_NONBLOCK) = 3
> write(3, "\200\1\0\0\0\f\0\0\1{\0\10", 12) = 12
> poll([{fd=3, events=POLLIN}], 1, 1000) = 1 ([{fd=3, revents=POLLIN}])
> read(3, "\200\1\0\0\0\24\0\0\0\0", 10) = 10
> poll([{fd=3, events=POLLIN}], 1, 1000) = 1 ([{fd=3, revents=POLLIN}])
> read(3, "\0\10Z\314k~c`I\346", 10) = 10
> futex(0xb6e7d35c, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d360, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d364, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d380, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7ac9c, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d280, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7b224, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7ad20, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> brk(0xda2000) = 0xda2000
> futex(0xb6e7d368, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d384, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d3f8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d36c, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> futex(0xb6e7d370, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> write(3, "\200\1\0\0\0\16\0\0\1s\200\0\0\0", 14) = 14
> poll([{fd=3, events=POLLIN}], 1, -1
>
>
>
> On Fri, Dec 17, 2021 at 10:29 AM Roberts, William C <william.c.roberts(a)intel.com <mailto:william.c.roberts(a)intel.com>> wrote:
>
> That's weird, could you strace it and see where it's hanging?
>
> What kernel version is that? I'm assuming your using the /dev/tpm0 or /dev/tpmrm0 device directly since I see the sudo.
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> *From:* Han <keepsimple(a)gmail.com <mailto:keepsimple(a)gmail.com>>
> *Sent:* Wednesday, December 15, 2021 5:56 PM
> *To:* tpm2(a)lists.01.org <mailto:tpm2(a)lists.01.org> <tpm2(a)lists.01.org <mailto:tpm2(a)lists.01.org>>
> *Subject:* [tpm2] tpm2_flushcontext stuck
>
> Hi,
>
> I'm using tpm2-tools 5.0 in Debian 11 Bullseye based Raspberry Pi OS. I'm trying to run tpm2_flushcontext but the command got stuck and it's not showing anything. Is the data in TPM corrupted? How can I check?
>
> $ sudo tpm2_flushcontext 0x80000000
> < no output at all and stuck here >
>
> (note: the handle 0x80000000 was obtained from previous command output when I was running previous version tpm2-tools 3.1.3 on Debian 10 Buster based OS:
>
> |$ sudo tpm2_createprimary -H o -g sha256 -G ecc -C context.out ObjectAttribute: 0x00030072 CreatePrimary Succeed ! Handle: 0x80000000) |
>
>
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