Known issue, fixed in 5.38, so this version should go stable ASAP. Does not seem as if the smartmontools daemon would be widely used among Gentoo users, otherwise this problem should have hit bugzie a lot earlier. Below the relevant excerpt from the log: ata1.00: ATA-8: SAMSUNG HD501LJ, CR100-10, max UDMA7 ata1.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata1.00: configured for UDMA/133 scsi 0:0:0:0: Direct-Access ATA SAMSUNG HD501LJ CR10 PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 976773168 512-byte hardware sectors (500108 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] 976773168 512-byte hardware sectors (500108 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sda4 sd 0:0:0:0: [sda] Attached SCSI disk scsi1 : sata_uli scsi2 : sata_uli ata2: SATA max UDMA/133 cmd 0xec00 ctl 0xe080 bmdma 0xd880 irq 21 ata3: SATA max UDMA/133 cmd 0xe000 ctl 0xdc00 bmdma 0xd888 irq 21 ata2: SATA link down (SStatus 0 SControl 300) ata3: SATA link down (SStatus 0 SControl 300) ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen ata1.00: cmd 60/20:00:00:00:00/00:00:00:00:00/40 tag 0 ncq 16384 in ata1.00: status: { DRDY } ata1: hard resetting link ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata1.00: qc timeout (cmd 0xec) ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) ata1.00: revalidation failed (errno=-5) ata1: failed to recover some devices, retrying in 5 secs ata1: hard resetting link ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata1.00: qc timeout (cmd 0xec) ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) ata1.00: revalidation failed (errno=-5) ata1: failed to recover some devices, retrying in 5 secs ata1: hard resetting link ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata1.00: qc timeout (cmd 0xec) ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) ata1.00: revalidation failed (errno=-5) ata1.00: disabled ata1: hard resetting link ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata1: EH complete sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 Buffer I/O error on device sda, logical block 1 Buffer I/O error on device sda, logical block 2 Buffer I/O error on device sda, logical block 3 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 Buffer I/O error on device sda, logical block 1 Buffer I/O error on device sda, logical block 2 Buffer I/O error on device sda, logical block 3 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 976773160 Buffer I/O error on device sda, logical block 122096645 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 976773160 Buffer I/O error on device sda, logical block 122096645 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 976773160 Buffer I/O error on device sda, logical block 122096645 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 976773160 Buffer I/O error on device sda, logical block 122096645 sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0
if you want a stable bump, then you should ask for one
x86 stable
I've been using this on ~amd64 and it appears stable
alpha/ia64/sparc stable
ppc stable
amd64 stable
Stable for HPPA. And closing.