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| author | Peter Wang <peter.wang@mediatek.com> | 2022-03-07 19:17:52 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-03-08 22:52:09 -0500 |
| commit | 2bd3b6b75946db2ace06e145d53988e10ed7e99a (patch) | |
| tree | 266f499d309c14ed839180a60339acef75b35675 /drivers/scsi/ufs/ufshcd.c | |
| parent | 296559d41e0f8e7c8f198dd3946e288255088cef (diff) | |
| download | linux-stable-2bd3b6b75946db2ace06e145d53988e10ed7e99a.tar.gz linux-stable-2bd3b6b75946db2ace06e145d53988e10ed7e99a.tar.bz2 linux-stable-2bd3b6b75946db2ace06e145d53988e10ed7e99a.zip | |
scsi: ufs: core: scsi_get_lba() error fix
When ufs initializes without scmd->device->sector_size set, scsi_get_lba()
will get a wrong shift number and trigger an ubsan error. The shift
exponent 4294967286 is too large for the 64-bit type 'sector_t' (aka
'unsigned long long').
Call scsi_get_lba() only when opcode is READ_10/WRITE_10/UNMAP.
Link: https://lore.kernel.org/r/20220307111752.10465-1-peter.wang@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 59c5135dcf94..0899d5b8cdad 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -365,7 +365,7 @@ static void ufshcd_add_uic_command_trace(struct ufs_hba *hba, static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag, enum ufs_trace_str_t str_t) { - u64 lba; + u64 lba = 0; u8 opcode = 0, group_id = 0; u32 intr, doorbell; struct ufshcd_lrb *lrbp = &hba->lrb[tag]; @@ -382,7 +382,6 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag, return; opcode = cmd->cmnd[0]; - lba = scsi_get_lba(cmd); if (opcode == READ_10 || opcode == WRITE_10) { /* @@ -390,6 +389,7 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag, */ transfer_len = be32_to_cpu(lrbp->ucd_req_ptr->sc.exp_data_transfer_len); + lba = scsi_get_lba(cmd); if (opcode == WRITE_10) group_id = lrbp->cmd->cmnd[6]; } else if (opcode == UNMAP) { @@ -397,6 +397,7 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag, * The number of Bytes to be unmapped beginning with the lba. */ transfer_len = blk_rq_bytes(rq); + lba = scsi_get_lba(cmd); } intr = ufshcd_readl(hba, REG_INTERRUPT_STATUS); |