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001a88687a
We assumed only bios with bi_idx == 0 would end up in drbd_make_request(). That is wrong. At least device mapper, in __clone_and_map(), may submit clones only covering a partial bio, but sharing the original bvec, by adjusting bi_idx and relevant other bio members of the clone. We used __bio_for_each_segment() in various places, even though that is documented as * drivers should not use the __ version unless they _really_ want to * run through the entire bio and not just pending pieces Impact: we would send the full bio bvec, even for the clone with bi_idx > 0, which will cause data corruption on the peer (because we submit wrong data at the clone offset), and will cause a DRBD protocol error, disconnect/reconnect and resync (thus fixing the corruption), because the next package header would be expected right in the middle of the sent data, causing DRBD magic mismatch. Fix: drop the assert, and use bio_for_each_segment() instead of the __ version. Conflicts: drbd/drbd_tracing.c Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> |
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| .. | ||
| aoe | ||
| drbd | ||
| mtip32xx | ||
| paride | ||
| xen-blkback | ||
| amiflop.c | ||
| ataflop.c | ||
| brd.c | ||
| cciss_cmd.h | ||
| cciss_scsi.c | ||
| cciss_scsi.h | ||
| cciss.c | ||
| cciss.h | ||
| cpqarray.c | ||
| cpqarray.h | ||
| cryptoloop.c | ||
| DAC960.c | ||
| DAC960.h | ||
| floppy.c | ||
| hd.c | ||
| ida_cmd.h | ||
| ida_ioctl.h | ||
| Kconfig | ||
| loop.c | ||
| Makefile | ||
| mg_disk.c | ||
| nbd.c | ||
| nvme.c | ||
| osdblk.c | ||
| pktcdvd.c | ||
| ps3disk.c | ||
| ps3vram.c | ||
| rbd_types.h | ||
| rbd.c | ||
| smart1,2.h | ||
| sunvdc.c | ||
| swim3.c | ||
| swim_asm.S | ||
| swim.c | ||
| sx8.c | ||
| ub.c | ||
| umem.c | ||
| umem.h | ||
| virtio_blk.c | ||
| xd.c | ||
| xd.h | ||
| xen-blkfront.c | ||
| xsysace.c | ||
| z2ram.c | ||