Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is git://internal_merge_and_test_tree devel-spot-201509091835 commit 72c9d8043fdc87832802de0b7a7129d6fc4c4c70 Author: Stephen Rothwell <sfr(a)canb.auug.org.au&gt; AuthorDate: Wed Sep 9 13:23:18 2015 +1000 Commit: Stephen Rothwell <sfr(a)canb.auug.org.au&gt; CommitDate: Wed Sep 9 13:23:18 2015 +1000 Add linux-next specific files for 20150909 Signed-off-by: Stephen Rothwell <sfr(a)canb.auug.org.au&gt; Usage: create-matrix -o matrix_file stats_files... options: -o, --output FILE save matrix to FILE -t, --table show as table -n, --no-source don't add field for tracking data source files -h, --help show this message [ 0.836036] PCI: CLS 0 bytes, default 64 [ 0.836951] Unpacking initramfs... [ 0.843985] ------------[ cut here ]------------ [ 0.844422] kernel BUG at include/linux/pagemap.h:149! [ 0.845023] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC [ 0.845519] Modules linked in: [ 0.845819] CPU: 0 PID: 1 Comm: swapper Not tainted 4.2.0-wl-ath-14724-g325c0ef #22 [ 0.846505] task: ffff880000160000 ti: ffff880000154000 task.ti: ffff880000154000 [ 0.847172] RIP: 0010:[<ffffffff87f1f2dc>] [<ffffffff87f1f2dc>] find_get_entry+0x1fc/0x240 [ 0.847933] RSP: 0000:ffff880000157a90 EFLAGS: 00010246 [ 0.848411] RAX: 0000000080000000 RBX: ffffea0000383fc0 RCX: 0000000000000001 [ 0.849046] RDX: 0000000000000001 RSI: ffffffff88a04a20 RDI: 0000000000000246 [ 0.849685] RBP: ffff880000157ac0 R08: 0000000000000000 R09: 00000003f8106000 [ 0.850321] R10: ffffffff88a04a01 R11: 0000000000000001 R12: ffff88000e438260 [ 0.850953] R13: ffff88000e45a008 R14: 0000000000000006 R15: ffffea0000383fc0 [ 0.851592] FS: 0000000000000000(0000) GS:ffffffff88820000(0000) knlGS:0000000000000000 [ 0.852312] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.852823] CR2: 00000000ffffffff CR3: 000000000880e000 CR4: 00000000001406b0 [ 0.853466] Stack: [ 0.853656] ffffffff87f1f0e0 0000000000000eec 000000000000000f 00000000000200d2 [ 0.854373] ffff88000e45a000 0000000000000006 ffff880000157b00 ffffffff87f1ff9d [ 0.855086] ffff880000160000 0000000000000eec 0000000000006114 ffff880000157b90 [ 0.855803] Call Trace: [ 0.856086] [<ffffffff87f1f0e0>] ? find_get_pages_contig+0x2f0/0x2f0 [ 0.856676] [<ffffffff87f1ff9d>] pagecache_get_page+0x2d/0x1d0 [ 0.857205] [<ffffffff87f20169>] grab_cache_page_write_begin+0x29/0x40 [ 0.857800] [<ffffffff87fa0ee8>] simple_write_begin+0x28/0x1c0 [ 0.858335] [<ffffffff87f1ea9e>] generic_perform_write+0xae/0x1b0 [ 0.858890] [<ffffffff87f9314b>] ? file_update_time+0x3b/0xe0 [ 0.859418] [<ffffffff87f21393>] __generic_file_write_iter+0x183/0x1c0 [ 0.860008] [<ffffffff87ea54ad>] ? trace_hardirqs_on+0xd/0x10 [ 0.860538] [<ffffffff87f214b4>] generic_file_write_iter+0xe4/0x1e0 [ 0.861111] [<ffffffff88af6626>] ? bunzip2+0x41f/0x41f [ 0.861588] [<ffffffff87f76b7d>] __vfs_write+0xad/0xe0 [ 0.862057] [<ffffffff87f770f7>] vfs_write+0xa7/0x180 [ 0.862525] [<ffffffff87f95dd5>] ? __fget_light+0x65/0x90 [ 0.863019] [<ffffffff88af6626>] ? bunzip2+0x41f/0x41f [ 0.863497] [<ffffffff87f779d9>] SyS_write+0x49/0xb0 [ 0.863952] [<ffffffff88ad1913>] xwrite+0x2a/0x5f [ 0.864390] [<ffffffff88ad1972>] do_copy+0x2a/0xb8 [ 0.864829] [<ffffffff88ad1701>] write_buffer+0x23/0x34 [ 0.865314] [<ffffffff88ad173d>] flush_buffer+0x2b/0x85 [ 0.865794] [<ffffffff88ad1712>] ? write_buffer+0x34/0x34 [ 0.866292] [<ffffffff88af68bd>] gunzip+0x28d/0x335 [ 0.866737] [<ffffffff88ad20dd>] ? maybe_link+0x105/0x105 [ 0.867288] [<ffffffff88ad1eb5>] unpack_to_rootfs+0x149/0x26c [ 0.867809] [<ffffffff88ad1663>] ? initrd_load+0x3f/0x3f [ 0.868296] [<ffffffff88ad213d>] populate_rootfs+0x60/0x114 [ 0.868799] [<ffffffff87e002b8>] do_one_initcall+0x98/0x1e0 [ 0.869312] [<ffffffff87e8cc00>] ? parse_args+0x1c0/0x410 [ 0.869807] [<ffffffff87e83d82>] ? __usermodehelper_set_disable_depth+0x42/0x50 [ 0.870471] [<ffffffff88ad10d0>] kernel_init_freeable+0x1d8/0x25b [ 0.871027] [<ffffffff883a7020>] ? rest_init+0x130/0x130 [ 0.871516] [<ffffffff883a702e>] kernel_init+0xe/0xe0 [ 0.871976] [<ffffffff883b4bdf>] ret_from_fork+0x3f/0x70 [ 0.872466] [<ffffffff883a7020>] ? rest_init+0x130/0x130 [ 0.872948] Code: f8 b9 00 01 e8 f6 4c f8 ff e9 2a ff ff ff 83 e3 01 0f 85 71 fe ff ff e8 83 98 f9 ff 85 c0 0f 84 14 ff ff ff e9 02 ff ff ff 0f 0b <0f> 0b 48 8b 43 30 48 8b 13 80 e6 80 48 0f 44 c3 e9 be fe ff ff [ 0.875499] RIP [<ffffffff87f1f2dc>] find_get_entry+0x1fc/0x240 [ 0.876047] RSP <ffff880000157a90> [ 0.876377] ---[ end trace f219e36411159934 ]--- [ 0.876799] Kernel panic - not syncing: Fatal exception git bisect start 325c0efb5f89af4e5e3d0575ea1b042375dedf6b 64291f7db5bd8150a74ad2036f1037e6a0428df2 -- git bisect bad b570ee62511a07540aac9c8953dabee4f5e491f5 # 23:28 0- 12 Merge 'iommu/master' into devel-spot-201509091835 git bisect bad 7d4e51e4b65c3ca7b64634a1629453329b02d448 # 23:29 0- 12 Merge 'renesas-drivers/topic/gen3-integration-v8' into devel-spot-201509091835 git bisect good e5af4c798148137d0b22bf5ccc1e92523ec46f6d # 23:32 22+ 1 Merge 'platform-drivers-x86/testing' into devel-spot-201509091835 git bisect good 75520c559502b803aaa6c2906e40fdb61e2497ef # 23:39 22+ 0 Merge 'dynticks/sched/core' into devel-spot-201509091835 git bisect good 296e6185a1ec3cd3ccbba9477919a727b595e9e9 # 23:47 21+ 0 Merge 'renesas-drivers/topic/r8a7795-scif-v1' into devel-spot-201509091835 git bisect bad e53433a47052636a7625da8d08bb231d49b16be5 # 23:52 0- 11 Merge 'rcu/dev.2015.09.01a' into devel-spot-201509091835 git bisect good b25a776a7fbeb80c5cec9e17d6e8cc5ea2e9873a # 00:03 22+ 0 Merge 'renesas-drivers/topic/rcar-dmac-residue-v1' into devel-spot-201509091835 # extra tests on tree/branch linus/master git bisect good 26d2177e977c912863ac04f6c1a967e793ca3a56 # 02:06 22+ 0 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma # extra tests on tree/branch linux-next/master git bisect good 72c9d8043fdc87832802de0b7a7129d6fc4c4c70 # 02:12 22+ 0 Add linux-next specific files for 20150909 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