Re: [patch|resend] block: fix race between request completion and timeout handling

2013-10-15 Thread Jens Axboe
On Tue, Oct 08 2013, Jeff Moyer wrote: > crocode i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support shpchp ioatdma dca > be2net sg ses enclosure ext4 mbcache jbd2 sd_mod crc_t10dif ahci > megaraid_sas(U) dm_mirror dm_region_hash dm_log dm_mod [last unloaded: > scsi_wait_scan] > > Pid: 491, comm: sc

[patch|resend] block: fix race between request completion and timeout handling

2013-10-08 Thread Jeff Moyer
Hi, We have several reports (against a distro kernel) of panics in blk_requeue_request that look like this: kernel BUG at block/blk-core.c:1045! invalid opcode: [#1] SMP last sysfs file: /sys/devices/pci:40/:40:03.0/:55:00.0/infiniband_mad/umad0/port CPU 0 Modules linked in: ipm