Messages in this thread | | | Date | Mon, 21 Apr 2014 19:06:03 -0600 | From | Jens Axboe <> | Subject | Re: [blk] WARNING: CPU: 0 PID: 300 at kernel/softirq.c:156 _local_bh_enable_ip() |
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On 2014-04-20 14:30, Jet Chen wrote: > Hi Zhiguo, > > I got the below dmesg and the first bad commit is > > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > commit 2c575026fae6e63771bd2a4c1d407214a8096a89 > Author: Hong Zhiguo <zhiguohong@tencent.com> > AuthorDate: Wed Nov 20 10:35:05 2013 -0700 > Commit: Jens Axboe <axboe@kernel.dk> > CommitDate: Wed Nov 20 15:33:04 2013 -0700 > > Update of blkg_stat and blkg_rwstat may happen in bh context. > While u64_stats_fetch_retry is only preempt_disable on 32bit > UP system. This is not enough to avoid preemption by bh and > may read strange 64 bit value. > Signed-off-by: Hong Zhiguo <zhiguohong@tencent.com> > Acked-by: Tejun Heo <tj@kernel.org> > Cc: stable@kernel.org > Signed-off-by: Jens Axboe <axboe@kernel.dk> > > > > +-----------------------------------------------------------+------------+------------+ > | | 82023bb7f7 | 2c575026fa | > +-----------------------------------------------------------+------------+------------+ > | boot_successes | 47 | 0 | > | boot_failures | 13 | 20 | > | BUG:kernel_boot_hang | 13 | 5 | > | inconsistent_IN-SOFTIRQ-W-SOFTIRQ-ON-W_usage | 0 | 15 | > | backtrace:smpboot_thread_fn | 0 | 15 | > | backtrace:vfs_read | 0 | 9 | > | backtrace:SyS_read | 0 | 9 | > | WARNING:CPU:PID:at_kernel/softirq.c:_local_bh_enable_ip() | 0 | 7 | > | BUG:spinlock_lockup_suspected_on_CPU | 0 | 1 | > | backtrace:do_mount | 0 | 6 | > | backtrace:SyS_mount | 0 | 6 | > | backtrace:async_run_entry_fn | 0 | 0 | > +-----------------------------------------------------------+------------+------------+ > > [ 12.318816] WARNING: CPU: 0 PID: 300 at kernel/softirq.c:156 _local_bh_enable_ip+0x34/0x97()
Does this still happen with 3.15-rc2?
-- Jens Axboe
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