Hi all, 4.4-rc8 does not fix the problem for me. Anything beyond 4.1.0 remains unable to boot this computer. Unfortunately, because the error occurs during early early SCSI initialization, I do not have easy access to the log - no disk, no network. It happens during SATA initialization: "scsi_runtime_resume". So my back trace looks different than Alex in https://bugs.debian.org/cgi-bin/bugreport.cgi?msg=42;filename=scsi-null-pointer-dereference.log;bug=801925;att=1 but like the one Paul is seeing: https://bugs.debian.org/cgi-bin/bugreport.cgi?msg=15;filename=20151020_006.jpg;bug=801925;att=3 I will try to do a photo next time, too. Here is some dmesg output from a successful boot on 4.1.0: Note there are some ACPI Errors there (but probably not related). --- ahci 0000:00:1f.2: version 3.0 ahci 0000:00:1f.2: SSS flag set, parallel bus scan disabled ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 3 Gbps 0x1 impl SATA mode ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo pio slum part ems apst scsi host0: ahci scsi host1: ahci scsi host2: ahci scsi host3: ahci scsi host4: ahci scsi host5: ahci ata1: SATA max UDMA/133 abar m2048@0xc0728000 port 0xc0728100 irq 30 ata2: DUMMY ata3: DUMMY ata4: DUMMY ata5: DUMMY ata6: DUMMY usb 3-1: new high-speed USB device number 2 using ehci-pci usb 4-1: new high-speed USB device number 2 using ehci-pci ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359) ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff8802458b1608), AE_NOT_FOUND (20150410/psparse-536) ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359) ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff8802458b15e0), AE_NOT_FOUND (20150410/psparse-536) ata1.00: ATA-8: TOSHIBA THNSNS256GMCP, TA2ABBF0, max UDMA/133 ata1.00: 500118192 sectors, multi 16: LBA48 NCQ (depth 31/32), AA ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359) ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff8802458b1608), AE_NOT_FOUND (20150410/psparse-536) ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359) ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff8802458b15e0), AE_NOT_FOUND (20150410/psparse-536) ata1.00: configured for UDMA/133 scsi 0:0:0:0: Direct-Access ATA TOSHIBA THNSNS25 BBF0 PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 500118192 512-byte logical blocks: (256 GB/238 GiB) 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 < sda5 sda6 > sd 0:0:0:0: [sda] Attached SCSI disk PM: Starting manual resume from disk PM: Hibernation image partition 8:6 present PM: Looking for hibernation image. PM: Image not found (code -22) PM: Hibernation image not present or could not be loaded. --- On Sat, Jan 9, 2016 at 5:36 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Sat, 9 Jan 2016, Paul Menzel wrote: > >> Version: 4.4~rc8-1~exp1 >> >> Dear Alan, >> >> >> Thank you for your help! >> >> There were some follow-ups to the bug report [1], but I think you and I >> were not in CC. > > I wasn't. > >> > http://marc.info/?l=linux-scsi&m=144185206825609&w=2 >> > http://marc.info/?l=linux-scsi&m=144185208525611&w=2 > >> I can only say, that I am still unable to boot my system with Linux >> 4.4-rc8 [2]. Are these patches included there? > > They are. I don't see how they could cause a NULL pointer dereference > in sd_resume(), though. If you revert them, does the problem go away? > > Also, can you add some debugging statements to sd_resume() so we can > see where the NULL pointer comes from? > > Alan Stern > -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
