Hi Anish, FYI, here is another bisect result for commit 759a0cc5a3e1bc2cc48fa3c0b91bdcad8b8f87d6 Author: Anish Bhatt AuthorDate: Thu Jul 17 00:18:18 2014 -0700 Commit: David S. Miller CommitDate: Thu Jul 17 16:06:03 2014 -0700 cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api Signed-off-by: Anish Bhatt Signed-off-by: Karen Xie Signed-off-by: Manoj Malviya Signed-off-by: David S. Miller =================================================== PARENT COMMIT NOT CLEAN. LOOK OUT FOR WRONG BISECT! =================================================== Attached dmesg for the parent commit, too, to help confirm whether it is a noise error. +-----------------------------------------------------------------------------+------------+------------+------------------+ | | fc8d0590d9 | 759a0cc5a3 | v3.16-rc5_071821 | +-----------------------------------------------------------------------------+------------+------------+------------------+ | boot_successes | 495 | 11 | 0 | | boot_failures | 825 | 319 | 11 | | BUG:kernel_boot_hang | 798 | 114 | 1 | | general_protection_fault | 13 | 2 | | | RIP:__lock_acquire | 13 | 2 | | | Kernel_panic-not_syncing:Attempted_to_kill_init_exitcode= | 13 | 2 | | | backtrace:free_reserved_area | 13 | 2 | | | backtrace:free_init_pages | 13 | 2 | | | backtrace:populate_rootfs | 13 | 2 | | | backtrace:kernel_init_freeable | 13 | 2 | | | BUG:kernel_boot_crashed | 14 | | | | BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/mutex.c | 0 | 203 | 10 | | backtrace:do_vfs_ioctl | 0 | 203 | 10 | | backtrace:SyS_ioctl | 0 | 203 | 10 | +-----------------------------------------------------------------------------+------------+------------+------------------+ /etc/init.d/rc: /etc/rcS.d/S37populate-volatile.sh: line 172: can't open /proc/cmdline: no such file grep: /proc/filesystems: No such file or directory Configuring network interfaces... [ 7.138372] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:586 [ 7.140148] in_atomic(): 0, irqs_disabled(): 0, pid: 261, name: ifconfig [ 7.141280] 3 locks held by ifconfig/261: [ 7.141947] #0: (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x12/0x14 [ 7.143427] #1: (rcu_read_lock){......}, at: [] rcu_lock_acquire+0x0/0x23 [ 7.144976] #2: (rcu_read_lock){......}, at: [] rcu_read_lock+0x0/0x69 [ 7.146558] Preemption disabled at:[] smp_apic_timer_interrupt+0x21/0x3c [ 7.147977] [ 7.148266] CPU: 0 PID: 261 Comm: ifconfig Not tainted 3.16.0-rc5-01126-g759a0cc #8 [ 7.149535] 0000000000000000 ffff880010927a48 ffffffff87ad0d0c ffff880010910550 [ 7.150862] ffff880010927a78 ffffffff868a15f3 ffffffff886cd160 0000000000000000 [ 7.152216] ffff88001375a000 ffff880010910550 ffff880010927af8 ffffffff87ae6dbb [ 7.153533] Call Trace: [ 7.153969] [] dump_stack+0x4e/0x7a [ 7.154841] [] __might_sleep+0x1f2/0x1fb [ 7.155792] [] mutex_lock_nested+0x37/0x414 [ 7.156784] [] ? __lock_acquire+0x3a8/0xde4 [ 7.157764] [] cxgbi_device_find_by_netdev+0x5e/0xfd [ 7.158866] [] cxgbi_inet6addr_handler+0x3c/0x99 [ 7.159915] [] notifier_call_chain+0x94/0xc0 [ 7.160912] [] __atomic_notifier_call_chain+0x7c/0xe2 [ 7.162031] [] atomic_notifier_call_chain+0xf/0x11 [ 7.163110] [] inet6addr_notifier_call_chain+0x16/0x18 [ 7.164241] [] ipv6_add_addr+0x105/0x404 [ 7.165174] [] add_addr+0x2c/0x6e [ 7.165980] [] addrconf_notify+0x3b0/0x6ec [ 7.166951] [] ? __lock_is_held+0x38/0x50 [ 7.167904] [] notifier_call_chain+0x94/0xc0 [ 7.168898] [] raw_notifier_call_chain+0xf/0x11 [ 7.169938] [] call_netdevice_notifiers_info+0x4d/0x54 [ 7.171068] [] call_netdevice_notifiers+0xe/0x10 [ 7.172114] [] __dev_notify_flags+0x4f/0x7d [ 7.173091] [] dev_change_flags+0x48/0x53 [ 7.174040] [] devinet_ioctl+0x289/0x5b9 [ 7.174950] [] inet_ioctl+0x8c/0xa6 [ 7.175822] [] sock_ioctl+0x1a7/0x1c9 [ 7.176731] [] do_vfs_ioctl+0x3a7/0x470 [ 7.177652] [] ? rcu_read_lock_held+0x36/0x38 [ 7.178658] [] ? __fcheck_files.isra.8+0x4b/0x57 [ 7.179712] [] SyS_ioctl+0x4b/0x76 [ 7.180561] [] system_call_fastpath+0x16/0x1b ifup: can't open '/var/run/ifstate': No such file or directory done. hwclock: can't open '/dev/misc/rtc': No such file or directory git bisect start 9931f57b978a5b5ff5934ece85cf8bf7db5d2f67 1795cd9b3a91d4b5473c97f491d63892442212ab -- git bisect bad 64f2bc8ec801297316bf7189c640e5da60c5b77b # 01:06 0- 341 Merge 'renesas/devel' into devel-hourly-2014071821 git bisect bad 3f322c0abf13c5644ff308cd5f72c08e398878e6 # 01:09 31- 263 Merge 'pm/pm-sleep' into devel-hourly-2014071821 git bisect bad 9326a554df9c49570ff4c69ed8b28f9bff72b9ad # 01:13 11- 26 Merge 'usb/usb-linus' into devel-hourly-2014071821 git bisect good 5bc464435ec4aca3288a75c503280cedc875f72d # 01:54 330+ 192 Merge 'microblaze/next' into devel-hourly-2014071821 git bisect good 366124999766417afff537a44e74c695aede3f04 # 02:10 330+ 110 Merge 'pm/acpi-video' into devel-hourly-2014071821 git bisect bad 67ba0ca140433b242d9cb0920cf0572856b3dd38 # 02:18 1- 105 Merge 'can/master' into devel-hourly-2014071821 git bisect good 90fb5679e568b11b89e02b87f7f4fe00c7589ce0 # 02:38 330+ 85 Merge branch 'sctp_command_queue' git bisect good 95d01a669bd35d0e8eb28dd8a946876c00a9a61a # 02:54 330+ 115 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem git bisect good b6603fe574af289dbe9eb9fb4c540bca04f5a053 # 03:07 330+ 194 Merge tag 'for-linus-20140716' of git://git.infradead.org/linux-mtd git bisect good f54424412b6b2f64cae4d7c39d981ca14ce0052c # 03:27 330+ 173 bonding: permit enslaving interfaces without set_mac support git bisect good 2dc41cff7545d55c6294525c811594576f8e119c # 03:40 330+ 185 udp: Use hash2 for long hash1 chains in __udp*_lib_mcast_deliver. git bisect bad 759a0cc5a3e1bc2cc48fa3c0b91bdcad8b8f87d6 # 03:53 0- 4 cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api git bisect good 4bbe3f5c7174e989989c04d41e6640ac0b944dac # 04:08 330+ 154 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next git bisect good 92abf75033d2677a684c623d60f093b130c4b38f # 04:30 330+ 147 bonding: update bonding.txt for Layer2 hash factors git bisect good a3e3b2857d35988819bc396c012c53898b8223e6 # 04:46 330+ 222 cxgb4: Export symbols required by cxgb4i for ipv6 support and required defines git bisect good fc8d0590d9142d01e4ccea3aa57c894bd6e53662 # 04:59 330+ 173 libcxgbi: Add ipv6 api to driver # first bad commit: [759a0cc5a3e1bc2cc48fa3c0b91bdcad8b8f87d6] cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api git bisect good fc8d0590d9142d01e4ccea3aa57c894bd6e53662 # 05:14 990+ 825 libcxgbi: Add ipv6 api to driver git bisect bad 9931f57b978a5b5ff5934ece85cf8bf7db5d2f67 # 05:14 0- 11 0day head guard for 'devel-hourly-2014071821' git bisect good f83971912231fe5390d2357442b6c25bb8076d9b # 05:56 990+ 300 Merge tag 'gfs2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes This script may reproduce the error. ---------------------------------------------------------------------------- #!/bin/bash kernel=$1 initrd=yocto-minimal-x86_64.cgz wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/blob/master/initrd/$initrd kvm=( qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap -kernel $kernel -initrd $initrd -m 320 -smp 1 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -serial stdio -display none -monitor null ) append=( hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw drbd.minor_count=8 ) "${kvm[@]}" --append "${append[*]}" ---------------------------------------------------------------------------- Thanks, Fengguang