Hi Stephan, Could you give me more info on how I could reproduce this issue on my end? Also was this issue there all along? Which is the first kernel version where you see this? Thanks, Megha On Mon, 2016-09-26 at 19:32 +0200, Stephan Mueller wrote: > Am Freitag, 26. August 2016, 03:15:06 CEST schrieb Stephan Mueller: > > Hi Megha, > > > Hi, > > > > I tried to execute tests with sha1_mb. > > Have you had a chance to look into this one? > > > > The execution simply stalls when invoking a digest operation -- i.e. the > > digest operation does not finish. After some time after invoking the hashing > > operation, the following log appears (note, the kccavs_* functions are my > > test code; that test code works perfectly well with all other hash > > implementations): > > > > [ 140.426026] INFO: rcu_sched detected stalls on CPUs/tasks: > > [ 140.426719] 2-...: (1 GPs behind) idle=9c3/140000000000000/0 > > softirq=2680/2707 fqs=14762 > > [ 140.427024] (detected by 0, t=60002 jiffies, g=655, c=654, q=35) > > [ 140.427024] Task dump for CPU 2: > > [ 140.427024] cavs_driver R running task 0 945 862 > > 0x00000008 > > [ 140.427024] ffffffff9b78d965 ffffa527b8bfa640 ffffa527bb505940 > > ffffa52775c20c50 > > [ 140.427024] ffffa527bc300000 ffffa527b93d2a80 ffffa527bb857e00 > > ffffa527bc2ffd78 > > [ 140.427024] ffffa527b93d2ac8 ffffa527bc2ffcc0 ffffffff9b78dfc8 > > ffffa527bc2ffd70 > > [ 140.427024] Call Trace: > > [ 140.427024] [<ffffffff9b78d965>] ? __schedule+0x245/0x690 > > [ 140.427024] [<ffffffff9b78dfc8>] ? preempt_schedule_common+0x18/0x30 > > [ 140.427024] [<ffffffff9b791a68>] ? _raw_spin_lock_irq+0x28/0x30 > > [ 140.427024] [<ffffffff9b78ed98>] ? wait_for_completion_interruptible > > +0x28/0x180 > > [ 140.427024] [<ffffffffc028541c>] ? sha1_mb_async_digest+0x6c/0x70 > > [sha1_mb] > > [ 140.427024] [<ffffffff9b3b1129>] ? crypto_ahash_op+0x29/0x70 > > [ 140.427024] [<ffffffffc0270148>] ? kccavs_test_ahash+0x198/0x2b0 > > [kcapi_cavs] > > [ 140.427024] [<ffffffffc026e20a>] ? kccavs_data_read+0xda/0x160 > > [kcapi_cavs] > > [ 140.427024] [<ffffffff9b370964>] ? full_proxy_read+0x54/0x90 > > [ 140.427024] [<ffffffff9b208088>] ? __vfs_read+0x28/0x110 > > [ 140.427024] [<ffffffff9b38a2c0>] ? security_file_permission+0xa0/0xc0 > > [ 140.427024] [<ffffffff9b20850e>] ? rw_verify_area+0x4e/0xb0 > > [ 140.427024] [<ffffffff9b208606>] ? vfs_read+0x96/0x130 > > [ 140.427024] [<ffffffff9b2099f6>] ? SyS_read+0x46/0xa0 > > [ 140.427024] [<ffffffff9b791cb6>] ? entry_SYSCALL_64_fastpath+0x1e/0xa8 > > > > > > > > Ciao > > Stephan > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-crypto" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > Ciao > Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
