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There is a possibility that a bio will be accessed after it has been freed on SCSI. It happens if you submit a bio with BIO_SYNC marked and the auto-unplugging kicks the request_fn, SCSI re-enables interrupts in-between so if the request completes between the add_request() in __make_request() and the bio_sync() call, we could be looking at a dead bio. It's a slim race, but it has been triggered in the Real World. So assign bio_sync() to a local variable instead. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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.. | ||
aoe | ||
paride | ||
acsi.c | ||
acsi_slm.c | ||
amiflop.c | ||
as-iosched.c | ||
ataflop.c | ||
cciss.c | ||
cciss.h | ||
cciss_cmd.h | ||
cciss_scsi.c | ||
cciss_scsi.h | ||
cfq-iosched.c | ||
cpqarray.c | ||
cpqarray.h | ||
cryptoloop.c | ||
DAC960.c | ||
DAC960.h | ||
deadline-iosched.c | ||
elevator.c | ||
floppy.c | ||
genhd.c | ||
ida_cmd.h | ||
ida_ioctl.h | ||
ioctl.c | ||
Kconfig | ||
Kconfig.iosched | ||
ll_rw_blk.c | ||
loop.c | ||
Makefile | ||
nbd.c | ||
noop-iosched.c | ||
pktcdvd.c | ||
ps2esdi.c | ||
rd.c | ||
scsi_ioctl.c | ||
smart1,2.h | ||
swim3.c | ||
swim_iop.c | ||
sx8.c | ||
ub.c | ||
umem.c | ||
viodasd.c | ||
xd.c | ||
xd.h | ||
z2ram.c |