Hi, I cannot reproduce below problem... have enabled all kind of debugging and also lockdep. Can I get a version of the .config file used? --Jesper On Thu, 28 Jan 2016 22:52:55 +0800 kernel test robot <fengguang.wu@xxxxxxxxx> wrote: > Greetings, > > 0day kernel testing robot got the below dmesg and the first bad commit is > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > commit a1fd55538cae9f411059c9b067a3d48c41aa876b > Author: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> > AuthorDate: Thu Jan 28 09:47:16 2016 +1100 > Commit: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> > CommitDate: Thu Jan 28 09:47:16 2016 +1100 > > slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB > > Deduplicate code in SLAB allocator functions slab_alloc() and > slab_alloc_node() by using the slab_pre_alloc_hook() call, which is now > shared between SLUB and SLAB. > > Signed-off-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> > Cc: Christoph Lameter <cl@xxxxxxxxx> > Cc: Pekka Enberg <penberg@xxxxxxxxxx> > Cc: David Rientjes <rientjes@xxxxxxxxxx> > Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> > Cc: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > > +-----------------------------------------------------------------+------------+------------+---------------+ > | | 074b6f53c3 | a1fd55538c | next-20160128 | > +-----------------------------------------------------------------+------------+------------+---------------+ > | boot_successes | 40 | 0 | 0 | > | boot_failures | 52 | 26 | 19 | > | Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 52 | 26 | 14 | > | WARNING:at_kernel/locking/lockdep.c:#trace_hardirqs_on_caller() | 0 | 26 | 19 | > | backtrace:pcpu_mem_zalloc | 0 | 26 | 19 | > | backtrace:percpu_init_late | 0 | 26 | 19 | > | IP-Config:Auto-configuration_of_network_failed | 0 | 0 | 2 | > +-----------------------------------------------------------------+------------+------------+---------------+ > > [ 0.000000] Inode-cache hash table entries: 16384 (order: 5, 131072 bytes) > [ 0.000000] Memory: 194224K/261624K available (10816K kernel code, 5060K rwdata, 6628K rodata, 988K init, 33076K bss, 67400K reserved, 0K cma-reserved) > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:2601 trace_hardirqs_on_caller+0x341/0x380() > [ 0.000000] DEBUG_LOCKS_WARN_ON(unlikely(early_boot_irqs_disabled)) > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.5.0-rc1-00069-ga1fd555 #1 > [ 0.000000] ffffffff82403dd8 ffffffff82403d90 ffffffff813b937d ffffffff82403dc8 > [ 0.000000] ffffffff810eb4d3 ffffffff812617cc 0000000000000001 ffff88000fcc50a8 > [ 0.000000] ffff8800000984c0 00000000024000c0 ffffffff82403e28 ffffffff810eb5c7 > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff813b937d>] dump_stack+0x27/0x3a > [ 0.000000] [<ffffffff810eb4d3>] warn_slowpath_common+0xa3/0x100 > [ 0.000000] [<ffffffff812617cc>] ? cache_alloc_refill+0x7ac/0x910 > [ 0.000000] [<ffffffff810eb5c7>] warn_slowpath_fmt+0x57/0x70 > [ 0.000000] [<ffffffff81143e61>] trace_hardirqs_on_caller+0x341/0x380 > [ 0.000000] [<ffffffff81143ebd>] trace_hardirqs_on+0x1d/0x30 > [ 0.000000] [<ffffffff812617cc>] cache_alloc_refill+0x7ac/0x910 > [ 0.000000] [<ffffffff8121df6a>] ? pcpu_mem_zalloc+0x5a/0xc0 > [ 0.000000] [<ffffffff81261fce>] __kmalloc+0x24e/0x440 > [ 0.000000] [<ffffffff8121df6a>] pcpu_mem_zalloc+0x5a/0xc0 > [ 0.000000] [<ffffffff829213aa>] percpu_init_late+0x4d/0xbb > [ 0.000000] [<ffffffff828f41c9>] start_kernel+0x30b/0x6e1 > [ 0.000000] [<ffffffff828f3120>] ? early_idt_handler_array+0x120/0x120 > [ 0.000000] [<ffffffff828f332f>] x86_64_start_reservations+0x46/0x4f > [ 0.000000] [<ffffffff828f34d4>] x86_64_start_kernel+0x19c/0x1b2 > [ 0.000000] ---[ end trace cb88537fdc8fa200 ]--- > [ 0.000000] Running RCU self tests > > git bisect start 888c8375131656144c1605071eab2eb6ac49abc3 92e963f50fc74041b5e9e744c330dca48e04f08d -- > git bisect good f664e02a71d85691fc33f116bae3eb7f0debd194 # 17:19 17+ 13 Merge remote-tracking branch 'kbuild/for-next' > git bisect good c7173552fb5efc15dd092d3a90b5d6ad0f3d9421 # 17:35 17+ 2 Merge remote-tracking branch 'audit/next' > git bisect good bd605d2e3cc724606fa7c0fd3d5d90276f07e979 # 17:47 17+ 2 Merge remote-tracking branch 'extcon/extcon-next' > git bisect good 108776431802ced1ca8ba38a9765ef81c48513de # 18:06 17+ 5 Merge remote-tracking branch 'llvmlinux/for-next' > git bisect good 56f1389517d2470a8abdb661c97d6ef640ca8cf3 # 18:30 17+ 3 Merge remote-tracking branch 'coresight/next' > git bisect bad 3cb196d8ee7f94b78c3d609bb91f5b175b3841d8 # 19:17 0- 8 Merge branch 'akpm-current/current' > git bisect good 49d5623e2407b26b532ca24f49d778b5b6fedb22 # 19:48 22+ 0 Merge remote-tracking branch 'rtc/rtc-next' > git bisect bad 8ccfb34d7450299714a9a590a764934397a818c6 # 20:06 0- 22 mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read > git bisect good d9dc8f2de4f863bef9a303b2cbae0bbd1c9dfceb # 20:32 22+ 22 ocfs2: add feature document for online file check > git bisect bad ebea6ceb9754b02bcab987af96c64782c665aa91 # 20:56 0- 18 mm/slab: remove object status buffer for DEBUG_SLAB_LEAK > git bisect bad 24d88722c03b13ef63b3b631f81454a63ac26cc4 # 21:06 0- 22 mm: kmemcheck skip object if slab allocation failed > git bisect good 1fc2d06fe0cfca10e571e2e444a4a37693495502 # 21:26 22+ 22 ocfs2/dlm: move lock to the tail of grant queue while doing in-place convert > git bisect good 3355ee84b3d96c7c30923d0bba228b0b7aa380d2 # 21:33 21+ 8 slub: cleanup code for kmem cgroup support to kmem_cache_free_bulk > git bisect good 074b6f53c320a81e975c0b5dd79daa5e78a711ba # 21:39 22+ 24 mm: fault-inject take over bootstrap kmem_cache check > git bisect bad a1fd55538cae9f411059c9b067a3d48c41aa876b # 21:49 0- 26 slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB > # first bad commit: [a1fd55538cae9f411059c9b067a3d48c41aa876b] slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB > git bisect good 074b6f53c320a81e975c0b5dd79daa5e78a711ba # 21:53 66+ 52 mm: fault-inject take over bootstrap kmem_cache check > # extra tests with DEBUG_INFO > git bisect bad a1fd55538cae9f411059c9b067a3d48c41aa876b # 22:00 0- 36 slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB > # extra tests on HEAD of linux-next/master > git bisect bad 888c8375131656144c1605071eab2eb6ac49abc3 # 22:00 0- 19 Add linux-next specific files for 20160128 > # extra tests on tree/branch linux-next/master > git bisect bad 888c8375131656144c1605071eab2eb6ac49abc3 # 22:00 0- 19 Add linux-next specific files for 20160128 > # extra tests with first bad commit reverted > git bisect good fea4cd9180f321dd12ec9a7932a9bfb32bfaf4c4 # 22:32 66+ 30 Revert "slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB" > # extra tests on tree/branch linus/master > git bisect good 03c21cb775a313f1ff19be59c5d02df3e3526471 # 22:52 65+ 67 Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost > # extra tests on tree/branch linux-next/master > git bisect bad 888c8375131656144c1605071eab2eb6ac49abc3 # 22:52 0- 19 Add linux-next specific files for 20160128 > > > This script may reproduce the error. > > ---------------------------------------------------------------------------- > #!/bin/bash > > kernel=$1 > initrd=yocto-minimal-x86_64.cgz > > wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd > > kvm=( > qemu-system-x86_64 > -enable-kvm > -cpu Haswell,+smep,+smap > -kernel $kernel > -initrd $initrd > -m 256 > -smp 1 > -device e1000,netdev=net0 > -netdev user,id=net0 > -boot order=nc > -no-reboot > -watchdog i6300esb > -rtc base=localtime > -serial stdio > -display none > -monitor null > ) > > append=( > hung_task_panic=1 > earlyprintk=ttyS0,115200 > systemd.log_level=err > debug > apic=debug > sysrq_always_enabled > rcupdate.rcu_cpu_stall_timeout=100 > panic=-1 > softlockup_panic=1 > nmi_watchdog=panic > oops=panic > load_ramdisk=2 > prompt_ramdisk=0 > console=ttyS0,115200 > console=tty0 > vga=normal > root=/dev/ram0 > rw > drbd.minor_count=8 > ) > > "${kvm[@]}" --append "${append[*]}" > ---------------------------------------------------------------------------- > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/lkp Intel Corporation -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. 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