Hello, last month, i sent this report to megaraidlinux@xxxxxxx, but unfortunately i get no response. Today we have tried kernel 2.6.27.4, which still segfaults with cat /proc/megaraid/hba0/raiddrives-0-9 Regards, - Thomas Osterried On 2008-10-01 15:01:51 +0200, Thomas Osterried <thomas@xxxxxxxxxxxxxxxxxxx> wrote in <20081001130151.GN10788@xxxxxxxxxxxxxxxxxxx>: > Hello, > > with kernel 2.6.26.5 we get a segfault (userspace) and kernel oops > while trying to access megaraid's /proc data. > Our previous kernel 2.6.24.2 did not has shown this error. > > cat /proc/megaraid/hba0/config - is ok > cat /proc/megaraid/hba0/stat - is ok > cat /proc/megaraid/hba0/rebuild-rate - leads to "Segementation fault" > cat /proc/megaraid/hba0/raiddrives-0-9 - leads to "Segementation fault" > > The error is reproduceable after each new boot. > > Controller: > > 03:03.1 I2O: Intel Corporation 80960RP [i960RP Microprocessor] (rev 02) (prog-if > 01) > Subsystem: Hewlett-Packard Company MegaRAID, Integrated HP NetRAID > Flags: bus master, fast Back2Back, medium devsel, latency 64, IRQ 21 > Memory at f6000000 (32-bit, prefetchable) [size=32M] > [virtual] Expansion ROM at 88030000 [disabled] [size=32K] > Capabilities: <access denied> > > Kernel Config: > # CONFIG_MEGARAID_NEWGEN is not set > CONFIG_MEGARAID_LEGACY=y > # CONFIG_MEGARAID_SAS is not set > > > root@db0fhn:~# uname -a > Linux db0fhn 2.6.26.5-dg8ngn #1 SMP Mon Sep 29 01:53:21 CEST 2008 i686 GNU/Linux > root@db0fhn:~# > > kernel complains (dmesg): > > BUG: unable to handle kernel NULL pointer dereference at 00000000 > IP: [<c0208360>] mega_internal_command+0x79/0x12a > *pde = 00000000 > Oops: 0002 [#1] SMP > Modules linked in: ppp_deflate zlib_deflate zlib_inflate bsd_comp ppp_async ppp_generic slhc tun bitrev crc32 mkiss ax25 crc16 iptable_nat nf_nat nf_conntrack_ipv4 xt_state nf_conntrack ipt_REJECT iptable_filter iptable_mangle xt_MARK ipv6 ipip tunnel4 ide_cd_mod cdrom aic7xxx scsi_transport_spi parport_serial parport_pc parport i2c_piix4 netconsole genrtc > > Pid: 8156, comm: cat Not tainted (2.6.26.5-dg8ngn #1) > EIP: 0060:[<c0208360>] EFLAGS: 00010246 CPU: 1 > EIP is at mega_internal_command+0x79/0x12a > EAX: 00000000 EBX: f7f559d4 ECX: 00000000 EDX: f72a6000 > ESI: f62e5000 EDI: f7f55b04 EBP: f7f55a58 ESP: f6301ec8 > DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 > Process cat (pid: 8156, ti=f6300000 task=f6306f50 task.ti=f6300000) > Stack: 00000000 f6301ef2 f7f554dc f7f55b04 f72a6000 f7f554dc f62e5000 f6301f04 > f5064000 c0208454 0004484c 00000000 50000000 0000362e 00000000 f71e4800 > f71e484c c020a06c 362e5000 c020a010 f7f5b3e0 f5064000 00000400 c018b1fc > Call Trace: > [<c0208454>] mega_adapinq+0x43/0x50 > [<c020a06c>] proc_rebuild_rate+0x5c/0x117 > [<c020a010>] proc_rebuild_rate+0x0/0x117 > [<c018b1fc>] proc_file_read+0xd6/0x1ff > [<c018b126>] proc_file_read+0x0/0x1ff > [<c01878ef>] proc_reg_read+0x60/0x73 > [<c018788f>] proc_reg_read+0x0/0x73 > [<c015e4bc>] vfs_read+0x81/0xf4 > [<c015e8af>] sys_read+0x3c/0x63 > [<c01037f6>] syscall_call+0x7/0xb > ======================= > Code: c0 ba d0 80 00 00 e8 13 30 f5 ff 8b 54 24 08 89 44 24 10 89 82 7c 05 00 00 8b 42 40 8b 54 24 10 89 02 8b 45 34 89 9d a0 00 00 00 <c6> 00 e1 83 4b 04 01 89 6b 5c 8b 7c 24 08 8b 74 24 04 81 c7 08 > EIP: [<c0208360>] mega_internal_command+0x79/0x12a SS:ESP 0068:f6301ec8 > ---[ end trace c8150e49c4aef69e ]--- > > Another Test after reboot: > > root@db0fhn:~# cat /proc/megaraid/hba0/raiddrives-0-9 > Segmentation fault > > BUG: unable to handle kernel NULL pointer dereference at 00000000 > IP: [<c0208360>] mega_internal_command+0x79/0x12a > *pde = 00000000 > Oops: 0002 [#1] SMP > Modules linked in: ppp_deflate zlib_deflate zlib_inflate bsd_comp ppp_async ppp_generic slhc tun bitrev crc32 mkiss ax25 crc16 iptable_nat nf_nat nf_conntrack_ipv4 xt_state nf_conntrack ipt_REJECT iptable_filter iptable_mangle xt_MARK ipv6 ipip tunnel4 ide_cd_mod cdrom aic7xxx scsi_transport_spi parport_serial parport_pc parport i2c_piix4 netconsole genrtc > > Pid: 6871, comm: cat Not tainted (2.6.26.5-dg8ngn #1) > EIP: 0060:[<c0208360>] EFLAGS: 00010246 CPU: 0 > EIP is at mega_internal_command+0x79/0x12a > EAX: 00000000 EBX: f7f559d4 ECX: 00000000 EDX: f71f3800 > ESI: f7ce0414 EDI: f7f55b04 EBP: f7f55a58 ESP: f6663e8c > DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 > Process cat (pid: 6871, ti=f6662000 task=f66c4f30 task.ti=f6662000) > Stack: 00000000 f6663eb6 f7f554dc f7f55b04 f71f3800 f7f554dc f7ce0414 f6663ec8 > f7217800 c0208454 0004784c 00000000 50000000 0000366a 00000000 f6393000 > f7217c14 c0208a19 00000000 f7f554dc 00000000 c0147617 c035a6a0 f66a5000 > Call Trace: > [<c0208454>] mega_adapinq+0x43/0x50 > [<c0208a19>] proc_rdrv+0x60/0x46b > [<c0147617>] __alloc_pages_internal+0xc1/0x356 > [<c0208e8a>] proc_rdrv_10+0x0/0x1f > [<c018b1fc>] proc_file_read+0xd6/0x1ff > [<c018b126>] proc_file_read+0x0/0x1ff > [<c01878ef>] proc_reg_read+0x60/0x73 > [<c018788f>] proc_reg_read+0x0/0x73 > [<c015e4bc>] vfs_read+0x81/0xf4 > [<c015e8af>] sys_read+0x3c/0x63 > [<c01037f6>] syscall_call+0x7/0xb > ======================= > Code: c0 ba d0 80 00 00 e8 13 30 f5 ff 8b 54 24 08 89 44 24 10 89 82 7c 05 00 00 8b 42 40 8b 54 24 10 89 02 8b 45 34 89 9d a0 00 00 00 <c6> 00 e1 83 4b 04 01 89 6b 5c 8b 7c 24 08 8b 74 24 04 81 c7 08 > EIP: [<c0208360>] mega_internal_command+0x79/0x12a SS:ESP 0068:f6663e8c > ---[ end trace 8e4e31f4cfef4759 ]--- > > > Kindly regards, > > - Thomas Osterried -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
