On Wed, 3 May 2000, Alexander Viro wrote:
>All clean on vanilla pre7-pre3 (with #error removed, indeed). Time to
I'll try also with vanilla once I'll return on that. It was vanilla plus
classzone patch.
>compare .configs?
CONFIG_EXPERIMENTAL=y
CONFIG_ALPHA_DP264=y
CONFIG_ISA=y
CONFIG_PCI=y
CONFIG_ALPHA_EV6=y
CONFIG_ALPHA_TSUNAMI=y
CONFIG_ALPHA_SRM=y
CONFIG_SMP=y
CONFIG_PCI_NAMES=y
CONFIG_NET=y
CONFIG_SYSVIPC=y
CONFIG_SYSCTL=y
CONFIG_KCORE_ELF=y
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_ELF=y
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LVM=y
CONFIG_LVM_PROC_FS=y
CONFIG_BLK_DEV_RAM=y
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_NETFILTER=y
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_ROUTE_NAT=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_ALIAS=y
CONFIG_SYN_COOKIES=y
CONFIG_SKB_LARGE=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_SD_EXTRA_DEVS=40
CONFIG_BLK_DEV_SR=y
CONFIG_SR_EXTRA_DEVS=2
CONFIG_SCSI_DEBUG_QUEUES=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_SYM53C8XX=y
CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS=16
CONFIG_SCSI_NCR53C8XX_MAX_TAGS=64
CONFIG_SCSI_NCR53C8XX_SYNC=40
CONFIG_SCSI_NCR53C8XX_PQS_PDS=y
CONFIG_NETDEVICES=y
CONFIG_NET_ETHERNET=y
CONFIG_NET_PCI=y
CONFIG_TULIP=y
CONFIG_NE2K_PCI=y
CONFIG_PPP=y
CONFIG_PPP_SYNC_TTY=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_SERIAL_CONSOLE=y
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_MOUSE=y
CONFIG_PSMOUSE=y
CONFIG_RTC=y
CONFIG_AUTOFS4_FS=y
CONFIG_FAT_FS=y
CONFIG_VFAT_FS=y
CONFIG_RAMFS=y
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_MINIX_FS=y
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_EXT2_FS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFSD=y
CONFIG_NFSD_V3=y
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_SMB_FS=y
CONFIG_OSF_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_VGA_CONSOLE=y
CONFIG_MATHEMU=y
CONFIG_MAGIC_SYSRQ=y
>Not here. Tested with a bunch of sockets, pipes and whatnot opened by a
>lot of processes.
I tried again:
andrea@laser:~ > fuser -s /
Segmentation fault
May 3 21:35:25 laser kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000004
May 3 21:35:25 laser kernel: printing eip:
May 3 21:35:25 laser kernel: c0156d09
May 3 21:35:25 laser kernel: *pde = 00000000
May 3 21:35:25 laser kernel: Oops: 0000
May 3 21:35:25 laser kernel: CPU: 0
May 3 21:35:25 laser kernel: EIP: 0010:[__d_path+161/252]
May 3 21:35:25 laser kernel: EFLAGS: 00010287
May 3 21:35:25 laser kernel: eax: c366ffff ebx: 00000fff ecx: c366fffe edx: c723ce40
May 3 21:35:25 laser kernel: esi: c366ffff edi: 00000000 ebp: c71ac4e0 esp: c6d8fefc
May 3 21:35:25 laser kernel: ds: 0018 es: 0018 ss: 0018
May 3 21:35:25 laser kernel: Process fuser (pid: 375, stackpage=c6d8f000)
May 3 21:35:25 laser kernel: Stack: 00000001 c7f4b4a0 00000002 c71ac4e0 c366ffff c01675bc c723ce40 00000000
May 3 21:35:25 laser kernel: c7ff40e0 c7f64900 c366f000 00001000 c71b2000 c71b24fc c71b24dc c6ddd560
May 3 21:35:25 laser kernel: c7f4b4dc c7f4b4bc 0366f000 c6d8e000 00000001 00000000 0000007b 00000000
May 3 21:35:25 laser kernel: Call Trace: [proc_pid_read_maps+548/1132] [pid_maps_read+189/264] [sys_read+276/316] [system_call+52/56]
May 3 21:35:25 laser kernel: Code: 3b 57 04 74 07 8b 6a 0c 39 ea 75 13 8b 74 24 1c 8b 46 08 39
I'm wondering how can it be my VM patch since unless I don't touch /proc
all is rock solid.
I'll try again with vanilla ASAP.
The config I used on the above IA32 machine is:
CONFIG_X86=y
CONFIG_ISA=y
CONFIG_UID16=y
CONFIG_EXPERIMENTAL=y
CONFIG_M686=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_L1_CACHE_BYTES=32
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_PGE=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_NOHIGHMEM=y
CONFIG_MTRR=y
CONFIG_SMP=y
CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KMOD=y
CONFIG_NET=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_PCI=y
CONFIG_PCI_GOBIOS=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_NAMES=y
CONFIG_SYSVIPC=y
CONFIG_SYSCTL=y
CONFIG_KCORE_ELF=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_ELF=y
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_PC_FIFO=y
CONFIG_PARPORT_1284=y
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_LVM=m
CONFIG_LVM_PROC_FS=y
CONFIG_BLK_DEV_RAM=m
CONFIG_PACKET=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_NAT=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_ALIAS=y
CONFIG_SYN_COOKIES=y
CONFIG_SKB_LARGE=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_PCI_EXPERIMENTAL=y
CONFIG_IDEDMA_AUTO=y
CONFIG_SCSI=m
CONFIG_BLK_DEV_SD=m
CONFIG_SD_EXTRA_DEVS=40
CONFIG_SCSI_DEBUG_QUEUES=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_PPA=m
CONFIG_NETDEVICES=y
CONFIG_NET_ETHERNET=y
CONFIG_NET_PCI=y
CONFIG_TULIP=y
CONFIG_PPP=y
CONFIG_PPP_ASYNC=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_SERIAL_CONSOLE=y
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_PRINTER=m
CONFIG_I2C=m
CONFIG_I2C_ALGOBIT=m
CONFIG_MOUSE=y
CONFIG_PSMOUSE=y
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_BT848=m
CONFIG_AUTOFS4_FS=y
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_RAMFS=y
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_EXT2_FS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFSD=m
CONFIG_NFSD_V3=y
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_SMB_FS=m
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_ISO8859_1=m
CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FB_VESA=y
CONFIG_VIDEO_SELECT=y
CONFIG_FBCON_CFB8=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_CFB24=y
CONFIG_FBCON_CFB32=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_SOUND=m
CONFIG_SOUND_OSS=m
CONFIG_SOUND_DMAP=y
CONFIG_SOUND_SB=m
CONFIG_SOUND_YM3812=m
CONFIG_MAGIC_SYSRQ=y
On IA32 I get oops in __d_path, on alpha I get the unaligned trap in the
other place. To trigger it on alpha `ps xa` is enough. On IA32 `fuser -s
/` is enough.
Andrea
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