Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753490Ab0H1ShU (ORCPT ); Sat, 28 Aug 2010 14:37:20 -0400 Received: from mx3-phx2.redhat.com ([209.132.183.24]:56725 "EHLO mx01.colomx.prod.int.phx2.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753143Ab0H1ShT (ORCPT ); Sat, 28 Aug 2010 14:37:19 -0400 Date: Sat, 28 Aug 2010 14:36:28 -0400 (EDT) From: caiqian@redhat.com To: torvalds@linux-foundation.org, tj@kernel.org Cc: kexec , linux-next@vger.kernel.org, linux-kernel Message-ID: <765617978.1475661283020588077.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> In-Reply-To: <229468156.1475641283020469212.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> Subject: Re: kdump regression compared to v2.6.35 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.5.5.71] X-Mailer: Zimbra 5.0.21_GA_3150.RHEL4_64 (ZimbraWebClient - FF3.0 (Linux)/5.0.21_GA_3150.RHEL4_64) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 17669 Lines: 363 Never mind. I figured out the bad commit, commit 3b7433b8a8a83c87972065b1852b7dcae691e464 Merge: 4a386c3 6ee0578 Author: Linus Torvalds Date: Sat Aug 7 12:42:58 2010 -0700 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (55 commits) workqueue: mark init_workqueues() as early_initcall() workqueue: explain for_each_*cwq_cpu() iterators fscache: fix build on !CONFIG_SYSCTL slow-work: kill it gfs2: use workqueue instead of slow-work drm: use workqueue instead of slow-work cifs: use workqueue instead of slow-work fscache: drop references to slow-work fscache: convert operation to use workqueue instead of slow-work fscache: convert object to use workqueue instead of slow-work workqueue: fix how cpu number is stored in work->data workqueue: fix mayday_mask handling on UP workqueue: fix build problem on !CONFIG_SMP workqueue: fix locking in retry path of maybe_create_worker() async: use workqueue for worker pool workqueue: remove WQ_SINGLE_CPU and use WQ_UNBOUND instead workqueue: implement unbound workqueue workqueue: prepare for WQ_UNBOUND implementation libata: take advantage of cmwq and remove concurrency limitations workqueue: fix worker management invocation without pending works ... Fixed up conflicts in fs/cifs/* as per Tejun. Other trivial conflicts in include/linux/workqueue.h, kernel/trace/Kconfig and kernel/workqueue.c ----- caiqian@redhat.com wrote: > Hmm, after bisect the mainline, it pointed to a wrong commit earlier > than v2.6.35, since we knew that v2.6.35 was working fine and > v2.6.36-rc1 was broken. Here was the log starting from HEAD (bad) and > v2.6.35 (good). > > I noticed that we got this too, > # git bisect good > Bisecting: a merge base must be tested > [21aa9af03d06cb1d19a3738e5cf12acff984e69b] sched: add hooks for > workqueue > > # git bisect log > git bisect start > # good: [ab69bcd66fb4be64edfc767365cb9eb084961246] Merge > git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 > git bisect good ab69bcd66fb4be64edfc767365cb9eb084961246 > # good: [1cfd2bda8c486ae0e7a8005354758ebb68172bca] Merge branch > 'linux-next' of > git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 > git bisect good 1cfd2bda8c486ae0e7a8005354758ebb68172bca > # bad: [faa38b5e0e092914764cdba9f83d31a3f794d182] Merge branch > 'for-linus' of > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 > git bisect bad faa38b5e0e092914764cdba9f83d31a3f794d182 > # bad: [5df6b8e65ad0f2eaee202ff002ac00d1ac605315] Merge branch > 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 > git bisect bad 5df6b8e65ad0f2eaee202ff002ac00d1ac605315 > # bad: [1fc7995d19139d6f99203b43c161968f3f554a15] Merge > git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 > git bisect bad 1fc7995d19139d6f99203b43c161968f3f554a15 > # good: [e8779776afbd5f2d5315cf48c4257ca7e9b250fb] Merge branch > 'x86-mce-for-linus' of > git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip > git bisect good e8779776afbd5f2d5315cf48c4257ca7e9b250fb > # bad: [f34217977d717385a3e9fd7018ac39fade3964c0] workqueue: implement > unbound workqueue > git bisect bad f34217977d717385a3e9fd7018ac39fade3964c0 > # good: [7e27d6e778cd87b6f2415515d7127eba53fe5d02] Linux 2.6.35-rc3 > git bisect good 7e27d6e778cd87b6f2415515d7127eba53fe5d02 > # good: [21aa9af03d06cb1d19a3738e5cf12acff984e69b] sched: add hooks > for workqueue > git bisect good 21aa9af03d06cb1d19a3738e5cf12acff984e69b > # good: [c8e55f360210c1bc49bea5d62bc3939b7ee13483] workqueue: > implement worker states > git bisect good c8e55f360210c1bc49bea5d62bc3939b7ee13483 > # good: [d320c03830b17af64e4547075003b1eeb274bc6c] workqueue: > s/__create_workqueue()/alloc_workqueue()/, and add system workqueues > git bisect good d320c03830b17af64e4547075003b1eeb274bc6c > # good: [4ce48b37bfedc2bc11e61eae76784887e88b922c] workqueue: fix race > condition in flush_workqueue() > git bisect good 4ce48b37bfedc2bc11e61eae76784887e88b922c > # good: [d313dd85ad846bc768d58e9ceb28588f917f4c9a] workqueue: fix > worker management invocation without pending works > git bisect good d313dd85ad846bc768d58e9ceb28588f917f4c9a > # good: [bdbc5dd7de5d07d6c9d3536e598956165a031d4c] workqueue: prepare > for WQ_UNBOUND implementation > git bisect good bdbc5dd7de5d07d6c9d3536e598956165a031d4c > > Any suggestion how to track it down? > > ----- "CAI Qian" wrote: > > > Just a head-up, the kdump kernel is stuck here. Bisect indicated > that > > cc41f5cede3c63836d1c0958204630b07f5b5ee7 was also good. > > > > Kernel command line: ro root=/dev/mapper/vg_intels3e3601-lv_root > > rd_LVM_LV=vg_intels3e3601/lv_root rd_LVM_LV=vg_intels3e3601/lv_swap > > rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 > > SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us > > console=ttyS0,115200 irqpoll maxcpus=1 reset_devices > > cgroup_disable=memory memmap=exactmap memmap=640K@0K > > memmap=130412K@49792K elfcorehdr=180204K memmap=128K$896K > > memmap=2124K#1978520K memmap=4280K#1980644K memmap=464K$1984924K > > memmap=156K#1985388K memmap=84K$1985544K memmap=92K#1985628K > > memmap=8K$1985720K memmap=124K#1985728K memmap=136K$1985852K > > memmap=192K#1985988K memmap=260K$1986180K memmap=2816K#1986440K > > memmap=176K$1989256K memmap=3028K#1989432K memmap=2048K#1992460K > > memmap=2072K#1994508K memmap=8K$1996580K memmap=324K#1996588K > > memmap=428K$1996912K memmap=31584K#1997340K memmap=960K$2028924K > > memmap=1248K#2029884K memmap=288K#2031132K memmap=192K#2031420K > > memmap=327684K$2031612K memmap=16384K$4128768K memmap=16K$4174960K > > memmap=16384K$4177920K > > Misrouted IRQ fixup and polling support enabled > > This may significantly impact system performance > > Disabling memory control group subsystem > > PID hash table entries: 512 (order: 0, 4096 bytes) > > Checking aperture... > > No AGP bridge found > > Queued invalidation will be enabled to support x2apic and > > Intr-remapping. > > Subtract (141 early reservations) > > #1 [0004000000 - 00052b1548] TEXT DATA BSS > > #2 [000ab63000 - 000afef000] RAMDISK > > #3 [00052b2000 - 00052b2220] BRK > > #4 [000009b000 - 00000fdd20] BIOS reserved > > #5 [00000fdd30 - 0000100000] BIOS reserved > > #6 [00000fdd20 - 00000fdd30] MP-table mpf > > #7 [0000000012 - 000000f012] MP-table mpc > > #8 [0000010000 - 0000012000] TRAMPOLINE > > #9 [0000012000 - 0000016000] ACPI WAKEUP > > #10 [0000016000 - 0000017000] PGTABLE > > #11 [0000017000 - 000001703c] ACPI SLIT > > #12 [000000f040 - 000000f4c0] MEMNODEMAP > > #13 [00030a0000 - 00030c7000] NODE_DATA > > #14 [00030c7000 - 00030c8000] BOOTMEM > > #15 [00034c8000 - 00034c8030] BOOTMEM > > #16 [00038c9000 - 00038ca000] BOOTMEM > > #17 [00038ca000 - 00038cb000] BOOTMEM > > #18 [0003a00000 - 0003e00000] MEMMAP 0 > > #19 [00030c8000 - 00030e0000] BOOTMEM > > #20 [00030e0000 - 00030f8000] BOOTMEM > > #21 [00030f8000 - 00030f9000] BOOTMEM > > #22 [00030f9000 - 00030f9041] BOOTMEM > > #23 [00030f9080 - 00030f9149] BOOTMEM > > #24 [00030f9180 - 00030f9768] BOOTMEM > > #25 [00030f9780 - 00030f97e8] BOOTMEM > > #26 [00030f9800 - 00030f9868] BOOTMEM > > #27 [00030f9880 - 00030f98e8] BOOTMEM > > #28 [00030f9900 - 00030f9968] BOOTMEM > > #29 [00030f9980 - 00030f99e8] BOOTMEM > > #30 [00030f9a00 - 00030f9a68] BOOTMEM > > #31 [00030f9a80 - 00030f9ae8] BOOTMEM > > #32 [00030f9b00 - 00030f9b68] BOOTMEM > > #33 [00030f9b80 - 00030f9be8] BOOTMEM > > #34 [00030f9c00 - 00030f9c68] BOOTMEM > > #35 [00030f9c80 - 00030f9ce8] BOOTMEM > > #36 [00030f9d00 - 00030f9d68] BOOTMEM > > #37 [00030f9d80 - 00030f9de8] BOOTMEM > > #38 [00030f9e00 - 00030f9e68] BOOTMEM > > #39 [00030f9e80 - 00030f9ee8] BOOTMEM > > #40 [00030f9f00 - 00030f9f68] BOOTMEM > > #41 [00030f9f80 - 00030f9fe8] BOOTMEM > > #42 [00030fa000 - 00030fa068] BOOTMEM > > #43 [00030fa080 - 00030fa0e8] BOOTMEM > > #44 [00030fa100 - 00030fa168] BOOTMEM > > #45 [00030fa180 - 00030fa1e8] BOOTMEM > > #46 [00030fa200 - 00030fa268] BOOTMEM > > #47 [00030fa280 - 00030fa2e8] BOOTMEM > > #48 [00030fa300 - 00030fa368] BOOTMEM > > #49 [00030fa380 - 00030fa3e8] BOOTMEM > > #50 [00030fa400 - 00030fa468] BOOTMEM > > #51 [00030fa480 - 00030fa4e8] BOOTMEM > > #52 [00030fa500 - 00030fa568] BOOTMEM > > #53 [00030fa580 - 00030fa5e8] BOOTMEM > > #54 [00030fa600 - 00030fa668] BOOTMEM > > #55 [00030fa680 - 00030fa6e8] BOOTMEM > > #56 [00030fa700 - 00030fa768] BOOTMEM > > #57 [00030fa780 - 00030fa7e8] BOOTMEM > > #58 [00030fa800 - 00030fa820] BOOTMEM > > #59 [00030fa840 - 00030fac0e] BOOTMEM > > #60 [00030fac40 - 00030fb00e] BOOTMEM > > #61 [0005400000 - 000541e000] BOOTMEM > > #62 [0005420000 - 000543e000] BOOTMEM > > #63 [0005440000 - 000545e000] BOOTMEM > > #64 [0005460000 - 000547e000] BOOTMEM > > #65 [0005480000 - 000549e000] BOOTMEM > > #66 [00054a0000 - 00054be000] BOOTMEM > > #67 [00054c0000 - 00054de000] BOOTMEM > > #68 [00054e0000 - 00054fe000] BOOTMEM > > #69 [0005500000 - 000551e000] BOOTMEM > > #70 [0005520000 - 000553e000] BOOTMEM > > #71 [0005540000 - 000555e000] BOOTMEM > > #72 [0005560000 - 000557e000] BOOTMEM > > #73 [0005580000 - 000559e000] BOOTMEM > > #74 [00055a0000 - 00055be000] BOOTMEM > > #75 [00055c0000 - 00055de000] BOOTMEM > > #76 [00055e0000 - 00055fe000] BOOTMEM > > #77 [0005600000 - 000561e000] BOOTMEM > > #78 [0005620000 - 000563e000] BOOTMEM > > #79 [0005640000 - 000565e000] BOOTMEM > > #80 [0005660000 - 000567e000] BOOTMEM > > #81 [0005680000 - 000569e000] BOOTMEM > > #82 [00056a0000 - 00056be000] BOOTMEM > > #83 [00056c0000 - 00056de000] BOOTMEM > > #84 [00056e0000 - 00056fe000] BOOTMEM > > #85 [0005700000 - 000571e000] BOOTMEM > > #86 [0005720000 - 000573e000] BOOTMEM > > #87 [0005740000 - 000575e000] BOOTMEM > > #88 [0005760000 - 000577e000] BOOTMEM > > #89 [0005780000 - 000579e000] BOOTMEM > > #90 [00057a0000 - 00057be000] BOOTMEM > > #91 [00057c0000 - 00057de000] BOOTMEM > > #92 [00057e0000 - 00057fe000] BOOTMEM > > #93 [0005800000 - 000581e000] BOOTMEM > > #94 [0005820000 - 000583e000] BOOTMEM > > #95 [0005840000 - 000585e000] BOOTMEM > > #96 [0005860000 - 000587e000] BOOTMEM > > #97 [0005880000 - 000589e000] BOOTMEM > > #98 [00058a0000 - 00058be000] BOOTMEM > > #99 [00058c0000 - 00058de000] BOOTMEM > > #100 [00058e0000 - 00058fe000] BOOTMEM > > #101 [0005900000 - 000591e000] BOOTMEM > > #102 [0005920000 - 000593e000] BOOTMEM > > #103 [0005940000 - 000595e000] BOOTMEM > > #104 [0005960000 - 000597e000] BOOTMEM > > #105 [0005980000 - 000599e000] BOOTMEM > > #106 [00059a0000 - 00059be000] BOOTMEM > > #107 [00059c0000 - 00059de000] BOOTMEM > > #108 [00059e0000 - 00059fe000] BOOTMEM > > #109 [0005a00000 - 0005a1e000] BOOTMEM > > #110 [0005a20000 - 0005a3e000] BOOTMEM > > #111 [0005a40000 - 0005a5e000] BOOTMEM > > #112 [0005a60000 - 0005a7e000] BOOTMEM > > #113 [0005a80000 - 0005a9e000] BOOTMEM > > #114 [0005aa0000 - 0005abe000] BOOTMEM > > #115 [0005ac0000 - 0005ade000] BOOTMEM > > #116 [0005ae0000 - 0005afe000] BOOTMEM > > #117 [0005b00000 - 0005b1e000] BOOTMEM > > #118 [0005b20000 - 0005b3e000] BOOTMEM > > #119 [0005b40000 - 0005b5e000] BOOTMEM > > #120 [0005b60000 - 0005b7e000] BOOTMEM > > #121 [0005b80000 - 0005b9e000] BOOTMEM > > #122 [0005ba0000 - 0005bbe000] BOOTMEM > > #123 [0005bc0000 - 0005bde000] BOOTMEM > > #124 [0005be0000 - 0005bfe000] BOOTMEM > > #125 [00030fd040 - 00030fd048] BOOTMEM > > #126 [00030fd080 - 00030fd088] BOOTMEM > > #127 [00030fd0c0 - 00030fd1c0] BOOTMEM > > #128 [00030fd1c0 - 00030fd3c0] BOOTMEM > > #129 [00030fd3c0 - 00030fd4d0] BOOTMEM > > #130 [00030fd500 - 00030fd548] BOOTMEM > > #131 [00030fd580 - 00030fd5c8] BOOTMEM > > #132 [00030fb040 - 00030fb240] BOOTMEM > > #133 [00030fb240 - 00030fb440] BOOTMEM > > #134 [00030fb440 - 00030fb640] BOOTMEM > > #135 [00030fb640 - 00030fb840] BOOTMEM > > #136 [00030fb840 - 00030fba40] BOOTMEM > > #137 [00030fba40 - 00030fbc40] BOOTMEM > > #138 [00030fbc40 - 00030fbe40] BOOTMEM > > #139 [00030fbe40 - 00030fc040] BOOTMEM > > #140 [00030fc040 - 00030fd040] BOOTMEM > > Memory: 94968k/180204k available (4766k kernel code, 49156k absent, > > 36080k reserved, 7642k data, 1448k init) > > Hierarchical RCU implementation. > > RCU-based detection of stalled CPUs is disabled. > > Verbose stalled-CPUs detection is disabled. > > NR_IRQS:262400 nr_irqs:2008 > > Extended CMOS year: 2000 > > Spurious LAPIC timer interrupt on cpu 0 > > Console: colour VGA+ 80x25 > > console [ttyS0] enabled > > Fast TSC calibration using PIT > > Detected 1994.798 MHz processor. > > Calibrating delay loop (skipped), value calculated using timer > > frequency.. 3989.59 BogoMIPS (lpj=1994798) > > pid_max: default: 65536 minimum: 512 > > Security Framework initialized > > SELinux: Initializing. > > Dentry cache hash table entries: 16384 (order: 5, 131072 bytes) > > Inode-cache hash table entries: 8192 (order: 4, 65536 bytes) > > Mount-cache hash table entries: 256 > > Initializing cgroup subsys ns > > Initializing cgroup subsys cpuacct > > Initializing cgroup subsys memory > > Initializing cgroup subsys devices > > Initializing cgroup subsys freezer > > Initializing cgroup subsys net_cls > > Initializing cgroup subsys blkio > > CPU: Physical Processor ID: 3 > > CPU: Processor Core ID: 0 > > mce: CPU supports 22 MCE banks > > using mwait in idle threads. > > Performance Events: PEBS fmt1+, Nehalem events, Intel PMU driver. > > ... version: 3 > > ... bit width: 48 > > ... generic registers: 4 > > ... value mask: 0000ffffffffffff > > ... max period: 000000007fffffff > > ... fixed-purpose events: 3 > > ... event mask: 000000070000000f > > SMP alternatives: switching to UP code > > ACPI: Core revision 20100702 > > ftrace: converting mcount calls to 0f 1f 44 00 00 > > ftrace: allocating 18514 entries in 73 pages > > DMAR: Host address width 48 > > DMAR: DRHD base: 0x000000fd800000 flags: 0x0 > > IOMMU 0: reg_base_addr fd800000 ver 1:0 cap c90780106f0462 ecap > f020fe > > DMAR: DRHD base: 0x000000fd000000 flags: 0x1 > > IOMMU 1: reg_base_addr fd000000 ver 1:0 cap c90780106f0462 ecap > f020fe > > DMAR: RMRR base: 0x0000007be29000 end: 0x0000007be2bfff > > DMAR: RMRR base: 0x0000007be16000 end: 0x0000007be16fff > > DMAR: RMRR base: 0x0000007be13000 end: 0x0000007be13fff > > DMAR: RMRR base: 0x0000007be10000 end: 0x0000007be10fff > > DMAR: RMRR base: 0x0000007be0d000 end: 0x0000007be0dfff > > DMAR: RMRR base: 0x0000007be0a000 end: 0x0000007be0afff > > DMAR: RMRR base: 0x0000007be07000 end: 0x0000007be07fff > > DMAR: RMRR base: 0x0000007be04000 end: 0x0000007be04fff > > DMAR: RMRR base: 0x0000007be01000 end: 0x0000007be01fff > > DMAR: ATSR flags: 0x0 > > DMAR: ATSR flags: 0x0 > > DMAR: RHSA base: 0x000000fd000000 proximity domain: 0x0 > > DMAR: RHSA base: 0x000000fd800000 proximity domain: 0x2 > > IOAPIC id 10 under DRHD base 0xfd800000 IOMMU 0 > > IOAPIC id 8 under DRHD base 0xfd000000 IOMMU 1 > > IOAPIC id 9 under DRHD base 0xfd000000 IOMMU 1 > > Enabled Interrupt-remapping > > Setting APIC routing to cluster x2apic > > ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 > > CPU0: Intel(R) Xeon(R) CPU X7550 @ 2.00GHz stepping 06 > > Brought up 1 CPUs > > Total of 1 processors activated (3989.59 BogoMIPS). > > devtmpfs: initialized > > regulator: core version 0.5 > > NET: Registered protocol family 16 > > ACPI FADT declares the system doesn't support PCIe ASPM, so disable > it > > ACPI: bus type pci registered > > PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem > > 0x80000000-0x8fffffff] (base 0x80000000) > > PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] reserved in E820 > > PCI: Using configuration type 1 for base access > > bio: create slab at 0 > > _______________________________________________ > kexec mailing list > kexec@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/