Hi Herbert, Tadeusz,
With the current cryptodev-2.6 tree (ex the patches to AEAD from the last 2 days), I get the following oops that is triggered by simply calling
crypto_alloc_aead("rfc4106(gcm(aes))", 0, 0);
Contrary, when calling
crypto_alloc_aead("rfc4106(gcm(aes-generic))", 0, 0);
all works fine.
[ 57.461418] BUG: unable to handle kernel NULL pointer dereference at 0000000000000044
[ 57.461423] IP: [<ffffffff812b4e23>] crypto_create_tfm+0x13/0xc0
[ 57.461428] PGD 0
[ 57.461430] Oops: 0000 [#1] SMP
[ 57.461432] Modules linked in: gcm kcapi_cavs(OE) nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack cfg80211 ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_mangle iptable_security iptable_raw crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 glue_helper ablk_helper microcode joydev virtio_balloon pcspkr serio_raw acpi_cpufreq i2c_piix4 qxl virtio_net virtio_blk drm_kms_helper ttm drm virtio_pci virtio_ring virtio
[ 57.461457] CPU: 1 PID: 1975 Comm: cryptomgr_test Tainted: G OE 4.0.0+ #219
[ 57.461459] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153950- 04/01/2014
[ 57.461460] task: ffff88007b40a200 ti: ffff88007b6f0000 task.ti: ffff88007b6f0000
[ 57.461461] RIP: 0010:[<ffffffff812b4e23>] [<ffffffff812b4e23>] crypto_create_tfm+0x13/0xc0
[ 57.461465] RSP: 0018:ffff88007b6f3b08 EFLAGS: 00010287
[ 57.461466] RAX: ffffffffa0131a00 RBX: ffffffffa0131a00 RCX: 0000000000000003
[ 57.461467] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffffa0131a00
[ 57.461468] RBP: ffff88007b6f3b28 R08: 00000000000191e0 R09: ffff88007b08acc0
[ 57.461470] R10: ffff88007b08acc0 R11: 0000000000000000 R12: ffff88007a5a3338
[ 57.461471] R13: ffffffffa0131a00 R14: 0000000000000000 R15: ffffffff8182fe80
[ 57.461472] FS: 0000000000000000(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000
[ 57.461473] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 57.461475] CR2: 0000000000000044 CR3: 0000000001c08000 CR4: 00000000000407e0
[ 57.461478] Stack:
[ 57.461480] ffffffffa0131a00 ffff88007a5a3338 ffff88007a5a3200 0000000000000000
[ 57.461482] ffff88007b6f3b58 ffffffff812b5da4 ffff88007b6f3b58 ffffffff812b4e3a
[ 57.461484] ffff88007b08acf8 ffff88007b08acc0 ffff88007b6f3b78 ffffffff812c8361
[ 57.461486] Call Trace:
[ 57.461492] [<ffffffff812b5da4>] crypto_spawn_tfm2+0x34/0x60
[ 57.461494] [<ffffffff812b4e3a>] ? crypto_create_tfm+0x2a/0xc0
[ 57.461497] [<ffffffff812c8361>] cryptd_aead_init_tfm+0x21/0x50
[ 57.461499] [<ffffffff812b4e90>] crypto_create_tfm+0x80/0xc0
[ 57.461501] [<ffffffff812b4f4b>] crypto_alloc_tfm+0x7b/0x130
[ 57.461503] [<ffffffff8130bc44>] ? snprintf+0x34/0x40
[ 57.461506] [<ffffffff812b7b89>] crypto_alloc_aead+0x19/0x20
[ 57.461508] [<ffffffff812c7c0e>] cryptd_alloc_aead+0x5e/0xb0
[ 57.461512] [<ffffffff81193b99>] ? __kmalloc+0x259/0x2a0
[ 57.461517] [<ffffffffa0114233>] rfc4106_init+0x33/0x80 [aesni_intel]
[ 57.461521] [<ffffffff812b4e90>] crypto_create_tfm+0x80/0xc0
[ 57.461523] [<ffffffff812b5da4>] crypto_spawn_tfm2+0x34/0x60
[ 57.461526] [<ffffffff81193b99>] ? __kmalloc+0x259/0x2a0
[ 57.461528] [<ffffffff812b78a1>] aead_geniv_init+0x21/0x40
[ 57.461530] [<ffffffff812bb3cb>] seqiv_aead_init+0x1b/0x20
[ 57.461532] [<ffffffff812b4e90>] crypto_create_tfm+0x80/0xc0
[ 57.461544] [<ffffffff812b4f4b>] crypto_alloc_tfm+0x7b/0x130
[ 57.461546] [<ffffffff812b7b89>] crypto_alloc_aead+0x19/0x20
[ 57.461548] [<ffffffff812c2019>] alg_test_aead+0x29/0xc0
[ 57.461550] [<ffffffff812be658>] alg_test+0x198/0x3a0
[ 57.461553] [<ffffffff81682a30>] ? __schedule+0x280/0x910
[ 57.461555] [<ffffffff812bd070>] ? crypto_unregister_pcomp+0x20/0x20
[ 57.461556] [<ffffffff812bd0b5>] cryptomgr_test+0x45/0x50
[ 57.461559] [<ffffffff81070b8b>] kthread+0xdb/0x100
[ 57.461561] [<ffffffff81070ab0>] ? kthread_create_on_node+0x170/0x170
[ 57.461564] [<ffffffff81687092>] ret_from_fork+0x42/0x70
[ 57.461565] [<ffffffff81070ab0>] ? kthread_create_on_node+0x170/0x170
[ 57.461566] Code: d2 48 8b 4d c0 48 8b 45 c8 eb aa 48 63 c3 e9 7c ff ff ff 0f 1f 44 00 00 66 66 66 66 90 55 48 89 e5 41 56 41 55 41 54 53 49 89 fd <8b> 5e 44 49 89 f6 ff 56 08 be d0 80 00 00 8d 7c 03 50 e8 06 eb
[ 57.461588] RIP [<ffffffff812b4e23>] crypto_create_tfm+0x13/0xc0
[ 57.461591] RSP <ffff88007b6f3b08>
[ 57.461591] CR2: 0000000000000044
[ 57.461594] ---[ end trace 14501b7db9b27df8 ]---
[ 58.980163] ------------[ cut here ]------------
[ 58.980171] WARNING: CPU: 1 PID: 1944 at crypto/algapi.c:339 crypto_wait_for_test+0x71/0x90()
[ 58.980172] Modules linked in: gcm kcapi_cavs(OE) nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack cfg80211 ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_mangle iptable_security iptable_raw crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 glue_helper ablk_helper microcode joydev virtio_balloon pcspkr serio_raw acpi_cpufreq i2c_piix4 qxl virtio_net virtio_blk drm_kms_helper ttm drm virtio_pci virtio_ring virtio
[ 58.980200] CPU: 1 PID: 1944 Comm: perl Tainted: G D OE 4.0.0+ #219
[ 58.980202] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153950- 04/01/2014
[ 58.980203] ffffffff81a2afaa ffff88007c19fb28 ffffffff81681194 0000000000000007
[ 58.980205] 0000000000000000 ffff88007c19fb68 ffffffff810551aa dead000000100100
[ 58.980207] ffff880036630200 0000000000000000 ffffffff81c7ebc0 ffff880036630200
[ 58.980209] Call Trace:
[ 58.980213] [<ffffffff81681194>] dump_stack+0x45/0x57
[ 58.980216] [<ffffffff810551aa>] warn_slowpath_common+0x8a/0xc0
[ 58.980218] [<ffffffff8105529a>] warn_slowpath_null+0x1a/0x20
[ 58.980220] [<ffffffff812b6861>] crypto_wait_for_test+0x71/0x90
[ 58.980222] [<ffffffff812b6acb>] crypto_register_instance+0xbb/0x100
[ 58.980225] [<ffffffff812b7a46>] crypto_nivaead_default+0x166/0x1a0
[ 58.980227] [<ffffffff812b7b1a>] crypto_lookup_aead+0x9a/0xf0
[ 58.980229] [<ffffffff812b4f33>] crypto_alloc_tfm+0x63/0x130
[ 58.980231] [<ffffffff812b7b89>] crypto_alloc_aead+0x19/0x20
[ 58.980234] [<ffffffffa02873ec>] kccavs_test_aead+0x4c/0x350 [kcapi_cavs]
[ 58.980236] [<ffffffff810a3f09>] ? vprintk_default+0x29/0x50
[ 58.980238] [<ffffffff8167fe46>] ? printk+0x46/0x48
[ 58.980240] [<ffffffffa0286f17>] kccavs_data_read+0xf7/0x130 [kcapi_cavs]
[ 58.980242] [<ffffffff811a9928>] __vfs_read+0x28/0xc0
[ 58.980245] [<ffffffff81294324>] ? security_file_permission+0x84/0xa0
[ 58.980246] [<ffffffff811a9ff3>] ? rw_verify_area+0x53/0x100
[ 58.980248] [<ffffffff811aa12a>] vfs_read+0x8a/0x140
[ 58.980250] [<ffffffff811aab56>] SyS_read+0x46/0xb0
[ 58.980252] [<ffffffff81686cae>] system_call_fastpath+0x12/0x71
[ 58.980254] ---[ end trace 14501b7db9b27df9 ]---
[ 58.980258] could not allocate aead handle for rfc4106(gcm(aes)) -4
--
Ciao
Stephan
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