Description of problem: Dell SC1420 server running FC4 crashes frequently (usually under heavy load). This server's primary function is to backup several other systems using Bacula. This server routinely crashes, most often during full backups but the problem occurs under other not yet identified situations. It can usually be reproduced by running stress 0.18.8 (using a variey of command line options) or memtester-4.0.5 (by supplying 2 as it's only arg which is the # of Megabytes to test-- if testing 1 MB there is no problem, anything larger and the server usually crashes rather quickly). The SC1420 has a dual core x86_64 Xeon CPU, 2 GB RAM, (2) 233 GB SATA drives in a JBOD configuration. Although this server is under warranty from Dell they will no longer support this problem because FC4 isn't a supported O/S. They have already swapped out the memory 3 times, motherboard twice and video card once so that would seem to rule out any obvious hardware related problem. Version-Release number of selected component (if applicable): I've tried several kernels including: kernel-2.6.15-1.1830_FC4 kernel-2.6.16-1.2069_FC4 kernel-2.6.16-1.2096_FC4 kernel-smp-2.6.16-1.2069_FC4 kernel-smp-2.6.16-1.2096_FC4 (also earlier kernels that are no longer installed). Currently running: 2.6.16-1.2096_FC4smp #1 SMP Wed Apr 19 16:01:54 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux How reproducible: Often enough and seems to depend on server activity. Steps to Reproduce: 1. Run memtester-4.0.5 w/ 2, ie. "memtester 2" 2. -or- stress 0.18.8 supplying either --vm or --hdd parameters Actual results: Crash #1 using stress 0.18.8 with --vm 4 Apr 22 08:04:10 sdwbackup kernel: Unable to handle kernel paging request at ffffabab31111136 RIP: Apr 22 08:04:10 sdwbackup kernel: <ffffffff80177fae>{get_vma_policy+62} Apr 22 08:04:10 sdwbackup kernel: PGD 0 Apr 22 08:04:10 sdwbackup kernel: Oops: 0002 [1] SMP Apr 22 08:04:10 sdwbackup kernel: last sysfs file: /class/vc/vcsa7/dev Apr 22 08:04:10 sdwbackup kernel: CPU 1 Apr 22 08:04:10 sdwbackup kernel: Modules linked in: parport_pc lp parport autofs4 sunrpc acpi_cpufreq ipv6 dm_mod video button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc i2c_i801 i2c_core e1000 floppy ext3 jbd ata_piix libata sd_mod scsi_mod Apr 22 08:04:10 sdwbackup kernel: Pid: 3144, comm: stress Not tainted 2.6.16-1.2096_FC4smp #1 Apr 22 08:04:10 sdwbackup kernel: RIP: 0010:[<ffffffff80177fae>] <ffffffff80177fae>{get_vma_policy+62} Apr 22 08:04:10 sdwbackup kernel: RSP: 0000:ffff81006a363d78 EFLAGS: 00010246 Apr 22 08:04:10 sdwbackup kernel: RAX: 00002aaaba0da010 RBX: ffff81006e5d6550 RCX: 0000000000000000 Apr 22 08:04:10 sdwbackup kernel: RDX: 00002aaaba0da010 RSI: 0000000000000000 RDI: ffff8100770370c0 Apr 22 08:04:10 sdwbackup kernel: RBP: 0000000000000000 R08: ffff81006a8c2870 R09: 000000316d70c160 Apr 22 08:04:10 sdwbackup kernel: R10: 0000000000000000 R11: 0000000000000246 R12: ffff81006a8c2870 Apr 22 08:04:10 sdwbackup kernel: R13: 00000000000280d2 R14: ffff81006a8c2870 R15: ffff81006887e6d0 Apr 22 08:04:10 sdwbackup kernel: FS: 00002aaaaaabf720(0000) GS:ffff81007fe26ec0(0000) knlGS:0000000000000000 Apr 22 08:04:10 sdwbackup kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 22 08:04:10 sdwbackup kernel: CR2: ffffabab31111136 CR3: 000000006e4da000 CR4: 00000000000006e0 Apr 22 08:04:10 sdwbackup kernel: Process stress (pid: 3144, threadinfo ffff81006a362000, task ffff8100770370c0) Apr 22 08:04:10 sdwbackup kernel: Stack: ffff81006a8c2870 ffffffff80178a91 ffff81006e5d6550 ffff81006e5d6550 Apr 22 08:04:10 sdwbackup kernel: 0000000000000000 00003ffffffff000 00002aaaba0da010 ffffffff8016ca46 Apr 22 08:04:10 sdwbackup kernel: ffff81006a363f58 0000000100000000 Apr 22 08:04:10 sdwbackup kernel: Call Trace: <ffffffff80178a91>{alloc_page_vma+33} <ffffffff8016ca46>{__handle_mm_fault+439} Apr 22 08:04:10 sdwbackup kernel: <ffffffff803541d5>{do_page_fault+1029} <ffffffff8012babd>{__wake_up+56} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8012ed18>{default_wake_function+0} <ffffffff80352315>{_spin_unlock_irq+9} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8035105d>{thread_return+171} <ffffffff8010b93d>{error_exit+0} Apr 22 08:04:10 sdwbackup kernel: Apr 22 08:04:10 sdwbackup kernel: Code: c0 74 07 66 83 78 04 00 75 0e 48 c7 c0 60 d1 3d 80 48 85 f6 Apr 22 08:04:10 sdwbackup kernel: RIP <ffffffff80177fae>{get_vma_policy+62} RSP <ffff81006a363d78> Apr 22 08:04:10 sdwbackup kernel: CR2: ffffabab31111136 Apr 22 08:04:10 sdwbackup kernel: <1>Unable to handle kernel paging request at ffffabab2347d846 RIP: Apr 22 08:04:10 sdwbackup kernel: <ffffffff80177fae>{get_vma_policy+62} Apr 22 08:04:10 sdwbackup kernel: PGD 0 Apr 22 08:04:10 sdwbackup kernel: Oops: 0002 [2] SMP Apr 22 08:04:10 sdwbackup kernel: last sysfs file: /class/vc/vcsa7/dev Apr 22 08:04:10 sdwbackup kernel: CPU 0 Apr 22 08:04:10 sdwbackup kernel: Modules linked in: parport_pc lp parport autofs4 sunrpc acpi_cpufreq ipv6 dm_mod video button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc i2c_i801 i2c_core e1000 floppy ext3 jbd ata_piix libata sd_mod scsi_mod Apr 22 08:04:10 sdwbackup kernel: Pid: 2100, comm: nifd Not tainted 2.6.16-1.2096_FC4smp #1 Apr 22 08:04:10 sdwbackup kernel: RIP: 0010:[<ffffffff80177fae>] <ffffffff80177fae>{get_vma_policy+62} Apr 22 08:04:10 sdwbackup kernel: RSP: 0018:ffff8100781a5c08 EFLAGS: 00010246 Apr 22 08:04:10 sdwbackup kernel: RAX: 00002aaaaaaac000 RBX: ffff81007cfc9550 RCX: 0000000000000000 Apr 22 08:04:10 sdwbackup kernel: RDX: 00002aaaaaaac000 RSI: 0000000000000000 RDI: ffff8100789d17e0 Apr 22 08:04:10 sdwbackup kernel: RBP: 0000000000000000 R08: ffff81007d017420 R09: 2020202020202065 Apr 22 08:04:10 sdwbackup kernel: R10: 2020202020202020 R11: 207c2d7265746e49 R12: ffff81007d017420 Apr 22 08:04:10 sdwbackup kernel: R13: 00000000000280d2 R14: ffff81007d017420 R15: ffff810078999560 Apr 22 08:04:10 sdwbackup kernel: FS: 00002aaaaaabf7e0(0000) GS:ffffffff8051e000(0000) knlGS:0000000000000000 Apr 22 08:04:10 sdwbackup kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 22 08:04:10 sdwbackup kernel: CR2: ffffabab2347d846 CR3: 0000000078991000 CR4: 00000000000006e0 Apr 22 08:04:10 sdwbackup kernel: Process nifd (pid: 2100, threadinfo ffff8100781a4000, task ffff8100789d17e0) Apr 22 08:04:10 sdwbackup kernel: Stack: ffff81007d017420 ffffffff80178a91 ffff81007cfc9550 ffff81007cfc9550 Apr 22 08:04:10 sdwbackup kernel: 0000000000000000 00003ffffffff000 00002aaaaaaac000 ffffffff8016ca46 Apr 22 08:04:10 sdwbackup kernel: 0000000000000000 00000001801999d1 Apr 22 08:04:10 sdwbackup kernel: Call Trace: <ffffffff80178a91>{alloc_page_vma+33} <ffffffff8016ca46>{__handle_mm_fault+439} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8019264a>{__link_path_walk+3503} <ffffffff803541d5>{do_page_fault+1029} Apr 22 08:04:10 sdwbackup kernel: <ffffffff80210b5c>{vsnprintf+1487} <ffffffff801a282f>{seq_printf+102} Apr 22 08:04:10 sdwbackup kernel: <ffffffff80163346>{__alloc_pages+112} <ffffffff8010b93d>{error_exit+0} Apr 22 08:04:10 sdwbackup kernel: <ffffffff80211a5f>{copy_user_generic+63} <ffffffff801a2dcb>{seq_read+589} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8018335d>{vfs_read+206} <ffffffff80183e08>{sys_read+69} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8010ab71>{tracesys+209} Apr 22 08:04:10 sdwbackup kernel: Apr 22 08:04:10 sdwbackup kernel: Code: c0 74 07 66 83 78 04 00 75 0e 48 c7 c0 60 d1 3d 80 48 85 f6 Apr 22 08:04:10 sdwbackup kernel: RIP <ffffffff80177fae>{get_vma_policy+62} RSP <ffff8100781a5c08> Apr 22 08:04:10 sdwbackup kernel: CR2: ffffabab2347d846 Apr 22 08:04:10 sdwbackup kernel: <1>Unable to handle kernel paging request at ffffabab2c687896 RIP: Apr 22 08:04:10 sdwbackup kernel: <ffffffff80177fae>{get_vma_policy+62} Apr 22 08:04:10 sdwbackup kernel: PGD 0 Apr 22 08:04:10 sdwbackup kernel: Oops: 0002 [3] SMP Apr 22 08:04:10 sdwbackup kernel: last sysfs file: /class/vc/vcsa7/dev Apr 22 08:04:10 sdwbackup kernel: CPU 0 Apr 22 08:04:10 sdwbackup kernel: Modules linked in: parport_pc lp parport autofs4 sunrpc acpi_cpufreq ipv6 dm_mod video button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc i2c_i801 i2c_core e1000 floppy ext3 jbd ata_piix libata sd_mod scsi_mod Apr 22 08:04:10 sdwbackup kernel: Pid: 3147, comm: stress Not tainted 2.6.16-1.2096_FC4smp #1 Apr 22 08:04:10 sdwbackup kernel: RIP: 0010:[<ffffffff80177fae>] <ffffffff80177fae>{get_vma_policy+62} Apr 22 08:04:10 sdwbackup kernel: RSP: 0000:ffff81006a313d78 EFLAGS: 00010246 Apr 22 08:04:10 sdwbackup kernel: RAX: 00002aaab55c7010 RBX: ffff81006a31b550 RCX: 0000000000000000 Apr 22 08:04:10 sdwbackup kernel: RDX: 00002aaab55c7010 RSI: 0000000000000000 RDI: ffff8100770c0820 Apr 22 08:04:10 sdwbackup kernel: RBP: 0000000000000000 R08: ffff81006b209ee8 R09: 000000316d70c160 Apr 22 08:04:10 sdwbackup kernel: R10: 0000000000000000 R11: 0000000000000246 R12: ffff81006b209ee8 Apr 22 08:04:10 sdwbackup kernel: R13: 00000000000280d2 R14: ffff81006b209ee8 R15: ffff810037a1ae38 Apr 22 08:04:10 sdwbackup kernel: FS: 00002aaaaaabf720(0000) GS:ffffffff8051e000(0000) knlGS:0000000000000000 Apr 22 08:04:10 sdwbackup kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 22 08:04:10 sdwbackup kernel: CR2: ffffabab2c687896 CR3: 000000006a33c000 CR4: 00000000000006e0 Apr 22 08:04:10 sdwbackup kernel: Process stress (pid: 3147, threadinfo ffff81006a312000, task ffff8100770c0820) Apr 22 08:04:10 sdwbackup kernel: Stack: ffff81006b209ee8 ffffffff80178a91 ffff81006a31b550 ffff81006a31b550 Apr 22 08:04:10 sdwbackup kernel: 0000000000000000 00003ffffffff000 00002aaab55c7010 ffffffff8016ca46 Apr 22 08:04:10 sdwbackup kernel: ffff81006a313f58 0000000100000000 Apr 22 08:04:10 sdwbackup kernel: Call Trace: <ffffffff80178a91>{alloc_page_vma+33} <ffffffff8016ca46>{__handle_mm_fault+439} Apr 22 08:04:10 sdwbackup kernel: <ffffffff803541d5>{do_page_fault+1029} <ffffffff8012babd>{__wake_up+56} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8012ed18>{default_wake_function+0} <ffffffff80352315>{_spin_unlock_irq+9} Apr 22 08:04:10 sdwbackup kernel: <ffffffff80350fb2>{thread_return+0} <ffffffff80351010>{thread_return+94} Apr 22 08:04:10 sdwbackup kernel: <ffffffff8010b93d>{error_exit+0} Apr 22 08:04:10 sdwbackup kernel: Apr 22 08:04:10 sdwbackup kernel: Code: c0 74 07 66 83 78 04 00 75 0e 48 c7 c0 60 d1 3d 80 48 85 f6 Apr 22 08:04:10 sdwbackup kernel: RIP <ffffffff80177fae>{get_vma_policy+62} RSP <ffff81006a313d78> Apr 22 08:04:11 sdwbackup kernel: CR2: ffffabab2c687896 Apr 22 08:44:49 sdwbackup kernel: <0>BUG: spinlock bad magic on CPU#1, gnome-terminal/3577 (Not tainted) Apr 22 08:44:49 sdwbackup kernel: Unable to handle kernel paging request at 000000010000011b RIP: Apr 22 08:44:49 sdwbackup kernel: <ffffffff80213339>{spin_bug+138} Apr 22 08:44:49 sdwbackup kernel: PGD 3009b067 PUD 0 Apr 22 08:44:49 sdwbackup kernel: Oops: 0000 [4] SMP Apr 22 08:44:49 sdwbackup kernel: last sysfs file: /class/vc/vcs7/dev Apr 22 08:44:49 sdwbackup kernel: CPU 1 Apr 22 08:44:49 sdwbackup kernel: Modules linked in: parport_pc lp parport autofs4 sunrpc acpi_cpufreq ipv6 dm_mod video button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc i2c_i801 i2c_core e1000 floppy ext3 jbd ata_piix libata sd_mod scsi_mod Apr 22 08:44:49 sdwbackup kernel: Pid: 3577, comm: gnome-terminal Not tainted 2.6.16-1.2096_FC4smp #1 Apr 22 08:44:49 sdwbackup kernel: RIP: 0010:[<ffffffff80213339>] <ffffffff80213339>{spin_bug+138} Apr 22 08:44:49 sdwbackup kernel: RSP: 0018:ffff810045ebfec8 EFLAGS: 00010206 Apr 22 08:44:49 sdwbackup kernel: RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff803d62f8 Apr 22 08:44:49 sdwbackup kernel: RDX: 0000000000000001 RSI: 0000000000000292 RDI: ffffffff803d62e0 Apr 22 08:44:49 sdwbackup kernel: RBP: ffff8100704e1a70 R08: 0000000000000002 R09: 0000000000000000 Apr 22 08:44:49 sdwbackup kernel: R10: 000000003b9aca00 R11: ffff81007ee81b80 R12: ffffffff803865cc Apr 22 08:44:49 sdwbackup kernel: R13: ffff81003f366be0 R14: 0000000000000c18 R15: 0000000000000000 Apr 22 08:44:49 sdwbackup kernel: FS: 00002aaaaaad53a0(0000) GS:ffff81007fe26ec0(0000) knlGS:0000000000000000 Apr 22 08:44:49 sdwbackup kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Apr 22 08:44:49 sdwbackup kernel: CR2: 000000010000011b CR3: 00000000551df000 CR4: 00000000000006e0 Apr 22 08:44:49 sdwbackup kernel: Process gnome-terminal (pid: 3577, threadinfo ffff810045ebe000, task ffff8100555077e0) Apr 22 08:44:49 sdwbackup kernel: Stack: ffff8100704e1a70 ffff8100704e1a78 0000000000000002 ffffffff80213655 Apr 22 08:44:49 sdwbackup kernel: ffff8100704e1a70 ffffffff801bb733 ffff8100704e1a70 0000000000000c18 Apr 22 08:44:49 sdwbackup kernel: 0000000000000002 ffffffff80183593 Apr 22 08:44:49 sdwbackup kernel: Call Trace: <ffffffff80213655>{_raw_spin_lock+25} <ffffffff801bb733>{dnotify_parent+32} Apr 22 08:44:49 sdwbackup kernel: <ffffffff80183593>{vfs_write+287} <ffffffff80183e79>{sys_write+69} Apr 22 08:44:49 sdwbackup kernel: <ffffffff8010ab71>{tracesys+209} Apr 22 08:44:49 sdwbackup kernel: Apr 22 08:44:49 sdwbackup kernel: Code: 44 8b 83 1c 01 00 00 48 8d 8b 00 03 00 00 8b 55 04 41 89 c1 Apr 22 08:44:49 sdwbackup kernel: RIP <ffffffff80213339>{spin_bug+138} RSP <ffff810045ebfec8> Apr 22 08:44:49 sdwbackup kernel: CR2: 000000010000011b Apr 22 08:47:04 sdwbackup kernel: <0>BUG: spinlock lockup on CPU#1, X/3369, ffff81007b3aa7b8 (Not tainted) Apr 22 08:47:04 sdwbackup kernel: Apr 22 08:47:04 sdwbackup kernel: Call Trace: <ffffffff80213738>{_raw_spin_lock+252} <ffffffff801bb733>{dnotify_parent+32} Apr 22 08:47:04 sdwbackup kernel: <ffffffff801833ae>{vfs_read+287} <ffffffff80183e08>{sys_read+69} Apr 22 08:47:04 sdwbackup kernel: <ffffffff8010ab71>{tracesys+209} Crash #2 using stress 0.18.8 with --hdd 2: Apr 22 17:06:06 sdwbackup kernel: gam_server[3368]: segfault at 0000000000000010 rip 00000031707229b1 rsp 00007fffffa09c50 error 4 Apr 22 17:07:09 sdwbackup kernel: gam_server[3457]: segfault at 0000000000000010 rip 00000031707229b1 rsp 00007fffffe360b0 error 4 Apr 22 17:08:16 sdwbackup kernel: Unable to handle kernel paging request at 00007fffffc33678 RIP: Apr 22 17:08:16 sdwbackup kernel: [<00007fffffc33678>] Apr 22 17:08:16 sdwbackup kernel: PGD 6b00a067 PUD 6aae4067 PMD 6aae6067 PTE 800000006aae7067 Apr 22 17:08:16 sdwbackup kernel: Oops: 0011 [1] SMP Apr 22 17:08:16 sdwbackup kernel: last sysfs file: /class/vc/vcs7/dev Apr 22 17:08:16 sdwbackup kernel: CPU 0 Apr 22 17:08:16 sdwbackup kernel: Modules linked in: parport_pc lp parport autofs4 sunrpc acpi_cpufreq ipv6 dm_mod video button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc i2c_i801 i2c_core e1000 floppy ext3 jbd ata_piix libata sd_mod scsi_mod Apr 22 17:08:16 sdwbackup kernel: Pid: 3468, comm: gam_server Not tainted 2.6.16-1.2096_FC4smp #1 Apr 22 17:08:16 sdwbackup kernel: RIP: 0010:[<00007fffffc33678>] [<00007fffffc33678>] Apr 22 17:08:16 sdwbackup kernel: RSP: 0018:ffff81006ae61e50 EFLAGS: 00010246 Apr 22 17:08:16 sdwbackup kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 Apr 22 17:08:16 sdwbackup kernel: RDX: 0000000000020003 RSI: ffff81006ae61e78 RDI: 00007fffffc337b0 Apr 22 17:08:16 sdwbackup kernel: RBP: ffff81006ae61f58 R08: 0000000000000000 R09: 0000000000000000 Apr 22 17:08:16 sdwbackup kernel: R10: 0000000000020003 R11: ffffffff80349ae1 R12: ffff810075e47678 Apr 22 17:08:16 sdwbackup kernel: R13: 0000000000000000 R14: 0000000000000000 R15: ffff81006ae61e78 Apr 22 17:08:16 sdwbackup kernel: FS: 00002aaaaaabf720(0000) GS:ffffffff8051e000(0000) knlGS:0000000000000000 Apr 22 17:08:16 sdwbackup kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 22 17:08:16 sdwbackup kernel: CR2: 00007fffffc33678 CR3: 000000006de52000 CR4: 00000000000006e0 Apr 22 17:08:16 sdwbackup kernel: Process gam_server (pid: 3468, threadinfo ffff81006ae60000, task ffff810075e47080) Apr 22 17:08:16 sdwbackup kernel: Stack: ffffffff8010a341 0000000000000282 0000000000000022 0000002200000296 Apr 22 17:08:16 sdwbackup kernel: ffff810075e47080 0000000000000022 ffffffff00020003 0000000000000441 Apr 22 17:08:16 sdwbackup kernel: ffff81000000000b 00000000000fffff Apr 22 17:08:16 sdwbackup kernel: Call Trace: <ffffffff8010a341>{do_signal+619} <ffffffff80182fd6>{do_sync_write+199} Apr 22 17:08:16 sdwbackup kernel: <ffffffff8010ac7a>{int_signal+18} Apr 22 17:08:16 sdwbackup kernel: Apr 22 17:08:16 sdwbackup kernel: Code: Bad RIP value. Apr 22 17:08:16 sdwbackup kernel: RIP [<00007fffffc33678>] RSP <ffff81006ae61e50> Apr 22 17:08:16 sdwbackup kernel: CR2: 00007fffffc33678 Crash #3 using memtester-4.0.5 with "2": Apr 22 20:39:03 sdwbackup kernel: Unable to handle kernel paging request at ffff91007fac3e30 RIP: Apr 22 20:39:03 sdwbackup kernel: <ffffffff801bb737>{dnotify_parent+36} Apr 22 20:39:03 sdwbackup kernel: PGD 0 Apr 22 20:39:03 sdwbackup kernel: Oops: 0000 [1] SMP Apr 22 20:39:03 sdwbackup kernel: last sysfs file: /class/vc/vcsa5/dev Apr 22 20:39:03 sdwbackup kernel: CPU 0 Apr 22 20:39:03 sdwbackup kernel: Modules linked in: ipv6 parport_pc lp parport autofs4 sunrpc acpi_cpufreq dm_mod video button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc i2c_i801 i2c_core e1000 floppy ext3 jbd ata_piix libata sd_mod scsi_mod Apr 22 20:39:03 sdwbackup kernel: Pid: 3202, comm: memtester Not tainted 2.6.16-1.2096_FC4smp #1 Apr 22 20:39:03 sdwbackup kernel: RIP: 0010:[<ffffffff801bb737>] <ffffffff801bb737>{dnotify_parent+36} Apr 22 20:39:03 sdwbackup kernel: RSP: 0018:ffff810022e39ef8 EFLAGS: 00010202 Apr 22 20:39:03 sdwbackup kernel: RAX: ffff81007dc7e7e0 RBX: ffff91007fac3e10 RCX: 0000000000000000 Apr 22 20:39:03 sdwbackup kernel: RDX: 00000000ffffffff RSI: 0000000000000002 RDI: ffff81007fd31a78 Apr 22 20:39:03 sdwbackup kernel: RBP: ffff81007fd31a78 R08: 0000000000000000 R09: ffff8100000bb566 Apr 22 20:39:03 sdwbackup kernel: R10: 000000000000001f R11: ffffffff802225ad R12: 0000000000000002 Apr 22 20:39:03 sdwbackup kernel: R13: ffff81007ef43130 R14: 0000000000000016 R15: 0000000000000003 Apr 22 20:39:03 sdwbackup kernel: FS: 00002aaaaaabf1a0(0000) GS:ffffffff8051e000(0000) knlGS:0000000000000000 Apr 22 20:39:03 sdwbackup kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 22 20:39:03 sdwbackup kernel: CR2: ffff91007fac3e30 CR3: 0000000068370000 CR4: 00000000000006e0 Apr 22 20:39:03 sdwbackup kernel: Process memtester (pid: 3202, threadinfo ffff810022e38000, task ffff81007dc7e7e0) Apr 22 20:39:03 sdwbackup kernel: Stack: ffff81007fd31a70 0000000000000016 0000000000000002 ffffffff80183593 Apr 22 20:39:03 sdwbackup kernel: ffff8100765d20c0 0000000000000016 fffffffffffffff7 00002aaaaaaac000 Apr 22 20:39:03 sdwbackup kernel: 00002aaaaaac0000 ffffffff80183e79 Apr 22 20:39:03 sdwbackup kernel: Call Trace: <ffffffff80183593>{vfs_write+287} <ffffffff80183e79>{sys_write+69} Apr 22 20:39:03 sdwbackup kernel: <ffffffff8010ab71>{tracesys+209} Apr 22 20:39:03 sdwbackup kernel: Apr 22 20:39:03 sdwbackup kernel: Code: 48 8b 43 20 4c 85 a0 70 02 00 00 74 33 8b 03 85 c0 75 0a 0f Apr 22 20:39:03 sdwbackup kernel: RIP <ffffffff801bb737>{dnotify_parent+36} RSP <ffff810022e39ef8> Apr 22 20:39:03 sdwbackup kernel: CR2: ffff91007fac3e30 Expected results: No server crashes Additional info: I've been able to crash the server in single user, multi user and X11 run modes.
This problem is likely an issue w/ the L2 cache on the CPU. Dell is sending a replacement server for this one so hopefully that will resolve this issue.