On Thu, Dec 18, 2014 at 3:58 AM, Anthony Wright <anthony@xxxxxxxxxxxxxxx> wrote: > On 18/12/2014 05:28, NeilBrown wrote: >> I suspect md/raid5 is sending down a discard request in some way that the >> scsi/sata layer or driver doesn't like, but without the full oops, I really >> cannot guess what it might be. > We've tried 4 times to reproduce the panic we got originally, but > unforunately with no luck. Below are the outputs from all four crashes > as captured by netconsole, in case they are any help. > > Crash #1 > [63207.177400] BUG: unable to handle kernel paging request at > 0000001e00008000 > > Crash #2 > [ 531.210340] BUG: unable to handle kernel paging request at > 0000000100000000 > [ 531.210514] IP:[ 531.210340] BUG: unable to handle kernel > [<ffffffff8128788e>] __blk_segment_map_sg+0x5e/0x1b0 > paging request[ 531.210632] PGD 20187f067 PUD 0 at 0000000100000000 > > [ 531.210514] IP: [<ffffffff8128788e>] __blk_segment_map_sg+0x5e/0x1b0 > [ 531.210632] PGD 20187f067 PUD 0 > [ 531.210783] Oops: 0000 [#1] SMP > [ 531.210932] Modules linked in: eql netconsole configfs raid456[ > 531.210783] Oops: 0000 [#1] SMP > [ 531.210932] Modules linked in: eql netconsole configfs raid456 > async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq > xt_multiport async_raid6_recov async_memcpy async_pq async_xor xor > async_tx raid6_pq xt_multiport xt_tcpudp iptable_filter ip_tables > x_tables aesni_intel aes_x86_64 glue_helper lrw xt_tcpudp iptable_filter > ip_tables x_tables aesni_intel aes_x86_64 glue_helper lrw gf128mul > ablk_helper cryptd ppdev gf128mul ablk_helper cryptd ppdev > > Crash #3 > [ 268.115094] general protection fault: 0000 [#1] SMP > [ 268.115263] Modules linked in:[ 268.115094] general protection > fault: 0000 [#1] SMP > [ 268.115263] Modules linked in: > > Crash #4 > [ 276.325157] general protection fault: 0000 [#1] SMP > Are you trimming these? Or do they literally end with nothing else reported? In any case you must be trimming what comes before what you've posted and I don't think that's a good idea, often there's something wrong happening well before an oops gets reported. -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
