===================================================== BUG: KMSAN: uninit-value in scsi_mode_sense+0x1046/0x16d0 drivers/scsi/scsi_lib.c:2239 scsi_mode_sense+0x1046/0x16d0 drivers/scsi/scsi_lib.c:2239 sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3327 sd_open+0x671/0xcd0 drivers/scsi/sd.c:1442 blkdev_get_whole+0xf6/0x770 block/bdev.c:666 blkdev_get_by_dev+0x819/0x15c0 block/bdev.c:813 blkdev_open+0x281/0x520 block/fops.c:501 do_dentry_open+0x1128/0x1bf0 fs/open.c:824 vfs_open+0xaf/0xe0 fs/open.c:959 do_open fs/namei.c:3476 [inline] path_openat+0x503a/0x5be0 fs/namei.c:3609 do_filp_open+0x306/0x760 fs/namei.c:3636 do_sys_openat2+0x263/0x8f0 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x35f/0x3c0 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae Uninit was stored to memory at: memcpy_from_page include/linux/highmem.h:346 [inline] memcpy_from_bvec include/linux/bvec.h:207 [inline] bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403 bio_endio+0xa7f/0xac0 block/bio.c:1516 req_bio_endio block/blk-mq.c:685 [inline] blk_update_request+0xc20/0x1d90 block/blk-mq.c:807 blk_mq_end_request block/blk-mq.c:928 [inline] blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1873 __blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:299 blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:332 __blk_mq_run_hw_queue+0x118/0x2c0 block/blk-mq.c:1968 __blk_mq_delay_run_hw_queue+0x221/0xa20 block/blk-mq.c:2045 blk_mq_run_hw_queue+0x4ad/0x9e0 block/blk-mq.c:2096 blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:451 blk_execute_rq_nowait+0x54c/0x5d0 block/blk-mq.c:1192 blk_execute_rq+0x129/0x470 block/blk-mq.c:1231 __scsi_execute+0x83f/0xe20 drivers/scsi/scsi_lib.c:244 scsi_execute_req include/scsi/scsi_device.h:469 [inline] scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2202 sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3327 sd_open+0x671/0xcd0 drivers/scsi/sd.c:1442 blkdev_get_whole+0xf6/0x770 block/bdev.c:666 blkdev_get_by_dev+0x819/0x15c0 block/bdev.c:813 blkdev_open+0x281/0x520 block/fops.c:501 do_dentry_open+0x1128/0x1bf0 fs/open.c:824 vfs_open+0xaf/0xe0 fs/open.c:959 do_open fs/namei.c:3476 [inline] path_openat+0x503a/0x5be0 fs/namei.c:3609 do_filp_open+0x306/0x760 fs/namei.c:3636 do_sys_openat2+0x263/0x8f0 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x35f/0x3c0 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae Uninit was created at: __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5429 alloc_pages+0xa08/0xd50 bio_copy_kern block/blk-map.c:449 [inline] blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640 __scsi_execute+0x4bd/0xe20 drivers/scsi/scsi_lib.c:229 scsi_execute_req include/scsi/scsi_device.h:469 [inline] scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2202 sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3327 sd_open+0x671/0xcd0 drivers/scsi/sd.c:1442 blkdev_get_whole+0xf6/0x770 block/bdev.c:666 blkdev_get_by_dev+0x819/0x15c0 block/bdev.c:813 blkdev_open+0x281/0x520 block/fops.c:501 do_dentry_open+0x1128/0x1bf0 fs/open.c:824 vfs_open+0xaf/0xe0 fs/open.c:959 do_open fs/namei.c:3476 [inline] path_openat+0x503a/0x5be0 fs/namei.c:3609 do_filp_open+0x306/0x760 fs/namei.c:3636 do_sys_openat2+0x263/0x8f0 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x35f/0x3c0 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae CPU: 0 PID: 3764 Comm: udevd Not tainted 5.17.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================