* Re: zero length sg in scatterwalk_start.
2012-09-10 19:12 ` zero length sg in scatterwalk_start Dave Jones
@ 2012-09-10 21:48 ` Horia Geanta
0 siblings, 0 replies; 2+ messages in thread
From: Horia Geanta @ 2012-09-10 21:48 UTC (permalink / raw)
To: Dave Jones; +Cc: netdev, Fedora Kernel Team, sergei.litvinenko, herbert
On 9/10/2012 10:12 PM, Dave Jones wrote:
> Sergei (Cc'd) just filed this against our 3.6rc4 kernel
>
> It's falling over on the
>
> BUG_ON(!sg->length);
>
> in scatterwalk_start
AFAICT, this is the same issue as the one reported here:
http://lkml.org/lkml/2012/9/9/23
Could you please try the fix proposed:
http://lkml.org/lkml/2012/9/9/97
and hopefully provide your Tested-by ?
Horia
>
> Dave
>
> On Mon, Sep 10, 2012 at 06:41:07PM +0000, bugzilla@redhat.com wrote:
> > https://bugzilla.redhat.com/show_bug.cgi?id=855961
> >
> > Description of problem:
> >
> > Message with diagnostic and openswan stop to work
> >
> > Version-Release number of selected component (if applicable):
> > kernel-3.6.0-0.rc4.git2.1.fc18.i686
> > openswan-2.6.38-3.fc18.i686
> >
> >
> > Steps to Reproduce:
> > 1. Install f18 to KVM
> > 2. install openswan
> > 3. prepare configuration on Host and kvm guest:
> >
> > conn fedora18
> > #----------------------------------
> > left=10.x.x.100
> > leftrsasigkey=0sAQPHXz0 ...
> > #----------------------------------
> > right=10.x.x.18
> > rightrsasigkey=0sAQOi...
> > #----------------------------------
> > type=transport
> > keyingtries=%forever
> > auth=esp
> > ike=aes256-sha1-modp1024
> > esp=aes256-sha1
> > authby=rsasig
> > keyexchange=ike
> > disablearrivalcheck=yes
> > pfs=no
> > compress=no
> > #-----------------------------
> > auto=add
> >
> > 4. run from host: ipsec auto --up fedora18
> >
> > Actual results:
> >
> > Message ... and ipsec service is not accessible any more. Guest do not crash
> > and stil work (accessible by ssh).
> >
> > Expected results:
> > ipsec start and work
> >
> >
> > [ 105.063277] ------------[ cut here ]------------
> > [ 105.063281] kernel BUG at crypto/scatterwalk.c:37!
> > [ 105.063283] invalid opcode: 0000 [#1] SMP
> > [ 105.063286] Modules linked in: authenc rmd160 crypto_null camellia_generic lzo cast6 cast5 deflate zlib_deflate cts gcm ccm serpent_sse2_i586 xts serpent_generic lrw gf128mul glue_helper blowfish_generic blowfish_common twofish_generic twofish_i586 twofish_common xcbc sha512_generic des_generic geode_aes ah6 ah4 esp6 esp4 xfrm4_mode_beet xfrm4_tunnel tunnel4 xfrm4_mode_tunnel xfrm4_mode_transport xfrm6_mode_transport xfrm6_mode_ro xfrm6_mode_beet xfrm6_mode_tunnel ipcomp ipcomp6 xfrm6_tunnel tunnel6 xfrm_ipcomp af_key lockd sunrpc bnep bluetooth rfkill ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ppdev microcode virtio_net i2c_piix4 parport_pc i2c_core parport uinput virtio_blk
> > [ 105.063327] Pid: 995, comm: cryptomgr_test Not tainted 3.6.0-0.rc4.git2.1.fc18.i686 #1 Bochs Bochs
> > [ 105.063329] EIP: 0060:[<c06829e9>] EFLAGS: 00010246 CPU: 0
> > [ 105.063363] EIP is at scatterwalk_start+0x19/0x20
> > [ 105.063365] EAX: f334bbe0 EBX: f286a5d8 ECX: 00000000 EDX: f286a5d8
> > [ 105.063367] ESI: 00000020 EDI: 00000000 EBP: f334bbd0 ESP: f334bbd0
> > [ 105.063368] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> > [ 105.063372] CR0: 8005003b CR2: 45cb04bc CR3: 00ede000 CR4: 000006d0
> > [ 105.063381] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> > [ 105.063386] DR6: ffff0ff0 DR7: 00000400
> > [ 105.063388] Process cryptomgr_test (pid: 995, ti=f334a000 task=f26e5640 task.ti=f334a000)
> > [ 105.063389] Stack:
> > [ 105.063390] f334bbf4 c0682bfa f334bbe0 f286a640 f286a5d8 f80851a3 f286a5a0 f286a5d8
> > [ 105.063395] f3378a50 f334bc38 f80859db 00000014 00000001 f2bd5000 00000000 87654321
> > [ 105.063400] 00000668 f54cdc80 00000200 00000000 00000000 f286a5d8 00000020 f286a678
> > [ 105.063406] Call Trace:
> > [ 105.063409] [<c0682bfa>] scatterwalk_map_and_copy+0x2a/0xa0
> > [ 105.063413] [<f80851a3>] ? crypto_authenc_ahash+0x63/0x80 [authenc]
> > [ 105.063416] [<f80859db>] crypto_authenc_genicv+0xdb/0x330 [authenc]
> > [ 105.063419] [<f8085dbc>] crypto_authenc_encrypt+0x8c/0xa0 [authenc]
> > [ 105.063422] [<c068a48a>] test_aead+0x5aa/0xd40
> > [ 105.063432] [<c047e685>] ? local_clock+0x65/0x70
> > [ 105.063444] [<c055d239>] ? deactivate_slab+0x419/0x540
> > [ 105.063449] [<c04a7f84>] ? trace_hardirqs_on_caller+0xf4/0x180
> > [ 105.063451] [<c04a801b>] ? trace_hardirqs_on+0xb/0x10
> > [ 105.063455] [<c068113d>] ? __crypto_alloc_tfm+0x3d/0x150
> > [ 105.063457] [<c068113d>] ? __crypto_alloc_tfm+0x3d/0x150
> > [ 105.063460] [<c055e2eb>] ? __kmalloc+0x11b/0x290
> > [ 105.063463] [<c068121f>] ? __crypto_alloc_tfm+0x11f/0x150
> > [ 105.063466] [<c0681bcd>] ? crypto_spawn_tfm+0x3d/0x70
> > [ 105.063468] [<c068f6d2>] ? crypto_cbc_init_tfm+0x22/0x40
> > [ 105.063471] [<c06811de>] ? __crypto_alloc_tfm+0xde/0x150
> > [ 105.063473] [<c0681bcd>] ? crypto_spawn_tfm+0x3d/0x70
> > [ 105.063476] [<c0685022>] ? skcipher_geniv_init+0x22/0x40
> > [ 105.063478] [<c0685edb>] ? async_chainiv_init+0x7b/0x90
> > [ 105.063481] [<c06811de>] ? __crypto_alloc_tfm+0xde/0x150
> > [ 105.063484] [<c068ac68>] alg_test_aead+0x48/0xa0
> > [ 105.063487] [<c068992e>] ? alg_find_test+0x2e/0x60
> > [ 105.063489] [<c0689a06>] alg_test+0xa6/0x270
> > [ 105.063511] [<c09fb836>] ? _raw_spin_unlock_irqrestore+0x36/0x70
> > [ 105.063514] [<c04a7f84>] ? trace_hardirqs_on_caller+0xf4/0x180
> > [ 105.063517] [<c04a801b>] ? trace_hardirqs_on+0xb/0x10
> > [ 105.063519] [<c06886c0>] ? cryptomgr_probe+0xb0/0xb0
> > [ 105.063522] [<c0688701>] cryptomgr_test+0x41/0x50
> > [ 105.063525] [<c046640d>] kthread+0x7d/0x90
> > [ 105.063528] [<c0466390>] ? __init_kthread_worker+0x60/0x60
> > [ 105.063532] [<c0a03502>] kernel_thread_helper+0x6/0x10
> > [ 105.063533] Code: c3 90 31 f6 83 c4 08 89 f0 5b 5e 5f 5d c3 66 90 66 90 55 89 e5 3e 8d 74 26 00 89 10 8b 4a 0c 85 c9 74 08 8b 52 08 5d 89 50 04 c3 <0f> 0b 90 8d 74 26 00 55 89 e5 53 3e 8d 74 26 00 89 c3 8b 00 81
> > [ 105.063565] EIP: [<c06829e9>] scatterwalk_start+0x19/0x20 SS:ESP 0068:f334bbd0
> > [ 105.063570] ---[ end trace 5057a14544445946 ]---
> > [ 105.063573] BUG: sleeping function called from invalid context at kernel/rwsem.c:20
> > [ 105.063574] in_atomic(): 1, irqs_disabled(): 0, pid: 995, name: cryptomgr_test
> > [ 105.063575] INFO: lockdep is turned off.
> > [ 105.063577] Pid: 995, comm: cryptomgr_test Tainted: G D 3.6.0-0.rc4.git2.1.fc18.i686 #1
> > [ 105.063578] Call Trace:
> > [ 105.063581] [<c0475227>] __might_sleep+0x167/0x210
> > [ 105.063584] [<c09f9230>] down_read+0x20/0x8b
> > [ 105.063587] [<c046e6ef>] ? __validate_process_creds+0x6f/0xd0
> > [ 105.063590] [<c0457f6e>] exit_signals+0x1e/0x110
> > [ 105.063595] [<c0446cef>] do_exit+0x9f/0xa10
> > [ 105.063597] [<c0443b11>] ? kmsg_dump+0x21/0x210
> > [ 105.063600] [<c0443c80>] ? kmsg_dump+0x190/0x210
> > [ 105.063602] [<c0443c94>] ? kmsg_dump+0x1a4/0x210
> > [ 105.063605] [<c0443b11>] ? kmsg_dump+0x21/0x210
> > [ 105.063607] [<c09fc92a>] oops_end+0x8a/0xd0
> > [ 105.063611] [<c04061d4>] die+0x54/0x80
> > [ 105.063613] [<c09fc366>] do_trap+0x96/0xd0
> > [ 105.063616] [<c0403b70>] ? do_bounds+0x90/0x90
> > [ 105.063618] [<c0403c16>] do_invalid_op+0xa6/0xb0
> > [ 105.063620] [<c06829e9>] ? scatterwalk_start+0x19/0x20
> > [ 105.063623] [<c068c1ed>] ? hmac_final+0x8d/0xa0
> > [ 105.063625] [<c0687d67>] ? crypto_shash_final+0x27/0xa0
> > [ 105.063628] [<c0688173>] ? shash_ahash_finup+0x73/0x80
> > [ 105.063637] [<c06c8dc8>] ? trace_hardirqs_off_thunk+0xc/0x14
> > [ 105.063640] [<c09fc0f8>] error_code+0x6c/0x74
> > [ 105.063643] [<c06800d8>] ? devcgroup_seq_read+0x2a8/0x2f0
> > [ 105.063645] [<c06829e9>] ? scatterwalk_start+0x19/0x20
> > [ 105.063648] [<c0682bfa>] scatterwalk_map_and_copy+0x2a/0xa0
> > [ 105.063651] [<f80851a3>] ? crypto_authenc_ahash+0x63/0x80 [authenc]
> > [ 105.063653] [<f80859db>] crypto_authenc_genicv+0xdb/0x330 [authenc]
> > [ 105.063656] [<f8085dbc>] crypto_authenc_encrypt+0x8c/0xa0 [authenc]
> > [ 105.063659] [<c068a48a>] test_aead+0x5aa/0xd40
> > [ 105.063661] [<c047e685>] ? local_clock+0x65/0x70
> > [ 105.063664] [<c055d239>] ? deactivate_slab+0x419/0x540
> > [ 105.063667] [<c04a7f84>] ? trace_hardirqs_on_caller+0xf4/0x180
> > [ 105.063670] [<c04a801b>] ? trace_hardirqs_on+0xb/0x10
> > [ 105.063672] [<c068113d>] ? __crypto_alloc_tfm+0x3d/0x150
> > [ 105.063675] [<c068113d>] ? __crypto_alloc_tfm+0x3d/0x150
> > [ 105.063678] [<c055e2eb>] ? __kmalloc+0x11b/0x290
> > [ 105.063681] [<c068121f>] ? __crypto_alloc_tfm+0x11f/0x150
> > [ 105.063683] [<c0681bcd>] ? crypto_spawn_tfm+0x3d/0x70
> > [ 105.063685] [<c068f6d2>] ? crypto_cbc_init_tfm+0x22/0x40
> > [ 105.063688] [<c06811de>] ? __crypto_alloc_tfm+0xde/0x150
> > [ 105.063690] [<c0681bcd>] ? crypto_spawn_tfm+0x3d/0x70
> > [ 105.063693] [<c0685022>] ? skcipher_geniv_init+0x22/0x40
> > [ 105.063695] [<c0685edb>] ? async_chainiv_init+0x7b/0x90
> > [ 105.063698] [<c06811de>] ? __crypto_alloc_tfm+0xde/0x150
> > [ 105.063701] [<c068ac68>] alg_test_aead+0x48/0xa0
> > [ 105.063703] [<c068992e>] ? alg_find_test+0x2e/0x60
> > [ 105.063706] [<c0689a06>] alg_test+0xa6/0x270
> > [ 105.063709] [<c09fb836>] ? _raw_spin_unlock_irqrestore+0x36/0x70
> > [ 105.063711] [<c04a7f84>] ? trace_hardirqs_on_caller+0xf4/0x180
> > [ 105.063713] [<c04a801b>] ? trace_hardirqs_on+0xb/0x10
> > [ 105.063716] [<c06886c0>] ? cryptomgr_probe+0xb0/0xb0
> > [ 105.063718] [<c0688701>] cryptomgr_test+0x41/0x50
> > [ 105.063721] [<c046640d>] kthread+0x7d/0x90
> > [ 105.063724] [<c0466390>] ? __init_kthread_worker+0x60/0x60
> > [ 105.063726] [<c0a03502>] kernel_thread_helper+0x6/0x10
> > [ 105.063728] note: cryptomgr_test[995] exited with preempt_count 1
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