I've got this warning yesterday while writing to a samba share on ARM. The samba process was deadlocked, I rebooted the device and issued e2fsck and it seems it didn't damage anything from the FS structure. Looking at flush_pending_writes I see it talks about bitmaps, however I know this RAID1 hasn't any bitmap set. [841839.034022] Unable to handle kernel paging request at virtual address c6f32204 [841839.042408] pgd = c097c000 [841839.046051] [c6f32204] *pgd=06e0041e(bad) [841839.053346] Internal error: Oops: 1 [#1] PREEMPT [841839.058082] Modules linked in: ipv6 mv_cesa raid1 md_mod [841839.063563] CPU: 0 Not tainted (3.0-ARCH #1) [841839.068299] PC is at generic_make_request+0x394/0x538 [841839.073462] LR is at generic_make_request+0x350/0x538 [841839.078634] pc : [<c020f740>] lr : [<c020f6fc>] psr: 20000013 [841839.078639] sp : c6ca7e30 ip : c6f32104 fp : 00000000 [841839.090351] r10: 74706db0 r9 : 00000010 r8 : c72fb2c0 [841839.095688] r7 : 00706db0 r6 : c6ca6000 r5 : 00000000 r4 : c6f32204 [841839.102333] r3 : 00000000 r2 : 00000010 r1 : 00000000 r0 : 74706db0 [841839.108978] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [841839.116415] Control: 0005397f Table: 0097c000 DAC: 00000017 [841839.122276] Process md127_raid1 (pid: 951, stack limit = 0xc6ca6270) [841839.128746] Stack: (0xc6ca7e30 to 0xc6ca8000) [841839.133212] 7e20: 00000007 c795e400 741065b0 00000000 [841839.141526] 7e40: 74706db0 00000000 10324438 00000000 00000000 00800010 c72fb2c0 00800012 [841839.149835] 7e60: 0ff23c38 00000000 00000000 c020df7c c6ca7e90 c72fb2c0 00000061 60000013 [841839.158145] 7e80: 00000000 00000000 00000000 00000000 c6ca7e90 c6f32204 c6f32e04 00000000 [841839.166457] 7ea0: c6d41368 7fffffff 00000000 c006457c 00000000 bf021780 c6d41360 c6ca6000 [841839.174767] 7ec0: c6c31a80 bf0219ec 00000102 c03c8fcc 60000093 c6ca6000 c05bd6b4 c004d118 [841839.183077] 7ee0: c78f28c0 c72eb400 00000001 00000000 c6ca6000 0000000b 00000000 c6ca6000 [841839.191387] 7f00: 00000001 c6c31a80 c6ca6000 c6c31a98 00000000 c004d598 00000000 bf00383c [841839.199697] 7f20: 7fffffff c6ca7fa8 c6d41368 7fffffff 00000000 c006457c 00000000 c03c8fcc [841839.208009] 7f40: c6d41360 c6ca6000 c6ca7fa8 c6d41368 7fffffff 00000000 91827364 c17221b0 [841839.216318] 7f60: c7b031b0 c6ca7f64 c6ca7f64 00000001 60000013 c6d41360 c6ca6000 c6ca7fa8 [841839.224627] 7f80: c6d41368 7fffffff 00000000 c006457c 00000000 bf003884 c6cb1e20 00000000 [841839.232939] 7fa0: c72046c0 c006457c c6ca7fa8 c6ca7fa8 c6d41360 c6cb1e10 c6d41360 bf003774 [841839.241247] 7fc0: 00000013 00000000 00000000 c0063e04 00000000 00000000 c6d41360 00000000 [841839.249558] 7fe0: c6ca7fe0 c6ca7fe0 c6cb1e10 c0063d88 c0033234 c0033234 00000000 00000000 [841839.257889] [<c020f740>] (generic_make_request+0x394/0x538) from [<bf021780>] (flush_pending_writes+0x8c/0xd0 [raid1]) [841839.268746] [<bf021780>] (flush_pending_writes+0x8c/0xd0 [raid1]) from [<bf0219ec>] (raid1d+0x54/0xe38 [raid1]) [841839.279026] [<bf0219ec>] (raid1d+0x54/0xe38 [raid1]) from [<bf003884>] (md_thread+0x110/0x12c [md_mod]) [841839.288599] [<bf003884>] (md_thread+0x110/0x12c [md_mod]) from [<c0063e04>] (kthread+0x7c/0x84) [841839.297449] [<c0063e04>] (kthread+0x7c/0x84) from [<c0033234>] (kernel_thread_exit+0x0/0x8) [841839.305934] Code: e3a03000 e1cda1d0 e15b0003 015a0002 (e1c400d0) [841839.313651] ---[ end trace 56f85a7cd71a670b ]--- [841839.319251] ------------[ cut here ]------------ [841839.324593] WARNING: at kernel/exit.c:910 do_exit+0x80/0x780() [841839.332182] Modules linked in: ipv6 mv_cesa raid1 md_mod [841839.338967] [<c00370d0>] (unwind_backtrace+0x0/0xe0) from [<c0046a1c>] (warn_slowpath_common+0x4c/0x64) [841839.349470] [<c0046a1c>] (warn_slowpath_common+0x4c/0x64) from [<c0046a4c>] (warn_slowpath_null+0x18/0x1c) [841839.360104] [<c0046a4c>] (warn_slowpath_null+0x18/0x1c) from [<c004a06c>] (do_exit+0x80/0x780) [841839.370185] [<c004a06c>] (do_exit+0x80/0x780) from [<c00356f4>] (die+0x1d4/0x200) [841839.378469] [<c00356f4>] (die+0x1d4/0x200) from [<c03c4f60>] (__do_kernel_fault.part.3+0x54/0x74) [841839.388681] [<c03c4f60>] (__do_kernel_fault.part.3+0x54/0x74) from [<c0038110>] (do_bad_area+0x70/0x78) [841839.399061] [<c0038110>] (do_bad_area+0x70/0x78) from [<c003a374>] (do_alignment+0x5bc/0x748) [841839.409862] [<c003a374>] (do_alignment+0x5bc/0x748) from [<c0032248>] (do_DataAbort+0x34/0x98) [841839.419464] [<c0032248>] (do_DataAbort+0x34/0x98) from [<c03ca7ec>] (__dabt_svc+0x4c/0x60) [841839.429003] Exception stack(0xc6ca7de8 to 0xc6ca7e30) [841839.434896] 7de0: 74706db0 00000000 00000010 00000000 c6f32204 00000000 [841839.443900] 7e00: c6ca6000 00706db0 c72fb2c0 00000010 74706db0 00000000 c6f32104 c6ca7e30 [841839.453995] 7e20: c020f6fc c020f740 20000013 ffffffff [841839.465333] [<c03ca7ec>] (__dabt_svc+0x4c/0x60) from [<c020f740>] (generic_make_request+0x394/0x538) [841839.497471] [<c020f740>] (generic_make_request+0x394/0x538) from [<bf021780>] (flush_pending_writes+0x8c/0xd0 [raid1]) [841839.515583] [<bf021780>] (flush_pending_writes+0x8c/0xd0 [raid1]) from [<bf0219ec>] (raid1d+0x54/0xe38 [raid1]) [841839.527865] [<bf0219ec>] (raid1d+0x54/0xe38 [raid1]) from [<bf003884>] (md_thread+0x110/0x12c [md_mod]) [841839.539566] [<bf003884>] (md_thread+0x110/0x12c [md_mod]) from [<c0063e04>] (kthread+0x7c/0x84) [841839.549013] [<c0063e04>] (kthread+0x7c/0x84) from [<c0033234>] (kernel_thread_exit+0x0/0x8) [841839.559184] ---[ end trace 56f85a7cd71a670c ]--- -- 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
