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Hello, is anyone experiencing this ? I have a sympa process (bulk.pl) which triggers this bug: ------------[ cut here ]------------ WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Hardware name: X8DTU-LN4+ Modules linked in: cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 microcode serio_raw i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support igb ioatdma dca i7core_edac edac_core sg ext4 mbcache jbd2...

Happy new year ! We have a SuperMicro server with a LSI MegaRAID 9260-4i controller. Since Centos 6.6 update (kernel 2.6.32-504), the controller doesn't initialize at boot. Reverting to kernel 2.6.32-431 allows server to boot fine. The server can't boot due to a bug in LSI megaraid module. Boot log ends by a lot of lines: RESET_GEN2: retry=xxx, hostdiag=a4 I tried Centos 6.6

...problem: # uname -rv 2.6.32-504.3.3.el6.x86_64 #1 SMP Wed Dec 17 01:55:02 UTC 2014 # dmesg | grep LSI scsi4 : LSI SAS based MegaRAID driver scsi 4:2:0:0: Direct-Access LSI MR9260-4i 2.13 PQ: 0 ANSI: 5 Copyright (c) 1999-2008 LSI Corporation # dmesg | grep Supermicro DMI: Supermicro X8DTU/X8DTU, BIOS 2.1b 12/30/2011 > The server can't boot due to a bug in LSI megaraid module. Boot log > ends by a lot of lines: > > RESET_GEN2: retry=xxx, hostdiag=a4 > > I tried Centos 6.6 install disk and it also fails to find disks but > Centos 7 install disk boot...

...> This happens on 2.6.36 and 2.6.37 with scst patches, 2.6.37 vanilla and on > 2.6.38-rc5 it just freezes the first time I try to mount. No outuput in dmesg. > > The hardware is Dual Xeon E5620, 12GB ram, Areca 1880 with 3 arrays (testing on > 3TB raid10 and 10TB raid6), SuperMicro X8DTU-F. > > If I left out any important info, please let me know ;). > A btrfs bug, I suspect. > [ 605.109630] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 > [ 605.109928] IP: [<ffffffff81100a7a>] bio_add_page+0xa/0x40 > [ 605.110089] PGD 277d...

...+0x35/0x60 [<c06d42f2>] ? start_secondary+0x182/0x1e0 handlers: [<f872d9b0>] (sdla_isr+0x0/0x310 [wanpipe]) Disabling IRQ #17 dou you have idea what is the problem? irqpoll doesnt help i have tried this supermicro motherboards http://www.supermicro.com/products/motherboard/QPI/5500/X8DTU-F.cfm http://www.supermicro.com/products/motherboard/QPI/5500/X8DTi-F.cfm http://www.supermicro.com/products/motherboard/QPI/5500/X8DTL-iF.cfm do you have someone working sangoma card with Tylersburg(intel 5520/5500) chipset? thanks p.s. sorry for offtopic :( ----------------------------------...