Hello, On Fri, Oct 27, 2017 at 01:19:01AM -0700, syzbot wrote: > WARNING: CPU: 1 PID: 2909 at drivers/ata/libata-core.c:5391 > ata_qc_issue+0x519/0xea0 drivers/ata/libata-core.c:5390 ... > sg_common_write.isra.17+0xf80/0x1c10 drivers/scsi/sg.c:806 > sg_write+0x7a0/0xc90 drivers/scsi/sg.c:677 > __vfs_write+0xef/0x970 fs/read_write.c:468 > vfs_write+0x189/0x510 fs/read_write.c:518 > SYSC_write fs/read_write.c:565 [inline] > SyS_write+0xef/0x220 fs/read_write.c:557 It's issuing an invalid command (data command w/o any data) via SG and libata triggered a warning before failing the command. The warning is still somewhat meaningful in that if we ever hit that during normal kernel operation, it shows the caller who's screwing up. idk, we can shut it up (nothing is really wrong in this case) or make it a bit smarter (filter out invalid sg commands earlier). Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
