Messages in this thread | | | Subject | Linux 2.2.19 release notes | Date | Wed, 4 Apr 2001 01:15:55 +0100 (BST) | From | Alan Cox <> |
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The master copy of this file is at http://www.linux.org.uk. Check there for updates and errata
Linux 2.2.19 Release Notes
Platforms:Alpha, M68K, PowerPC, S/390, Sparc, X86
Introduction Linux 2.2.19 is the latest update to the Linux kernel tree. The out of the box tree supports the Alpha, PPC, S/390, Sparc and X86 platforms. MIPS and ARM are mostly merged but you should obtain the platform specific tree.
Compilers This code is intended to build with gcc 2.7.2 and egcs 1.1.2. gcc 2.95.2 and Red Hat gcc 2.96-79 are believed to build the tree correctly. As yet we have no detailed information on gcc 2.95.3 but it seems to build the tree correctly.
Binary Compatibility Linux 2.2.19 should on the whole be fully binary compatible with old modules. In general you should not assume binary compatibility between kernel object modules in Linux.
Security Notes
Linux 2.2.19 contains significant security fixes as a result of third party testing and auditing. We are very grateful to those who contributed work and reports to this effort, in particular to OpenWall and to Chris Evans.
Architecture Updates
Alpha
+ Remove a bogus printk in the OSF syscall error path. + Fix ASN reuse races on Alpha SMP + Fix read_unlock races on Alpha SMP + Show registers across CPU's on SMP Alpha oops + Fix bottom half races on Alpha SMP + Use our own IRQ routing table for Ruffian boards + Remove bogus printk from Alpha exception tables
ARM The ARM tree has been partially synchronized with the ARM working tree for 2.2
+ Fix ptrace races on ARM + Miscellaneous ARM updates + Fix NFS alignment problems with ARM
i386
+ Fix CyrixIII panic on boot in some cases + Walk the top 8K not the top 4K of the stack on error dumps + Fix further CMOS locking + Correct microcode driver feature checking + Use E820 memory sizing + Handle E820 problems when run with IBM thinkpad + Speed up irq/fault paths by avoiding xchg() + Tighten up K6 bug check + The DMI check for APM could end up running after APM started + Updated A20 handler to 2.4 code. Fixes hangs on some obscure kit. + Watch for timers being reset to 18Hz by firmware bugs
PowerPC
+ Fix power off during IDE pmac init + Update atyfb128 and serial for pmac + Add workarounds for firmware bugs on early iMac + Fix oops on resume on some pmac machines + Fix problems in the Macintosh HID driver and input driver + Fix the pci syscall on the PowerMac machines
S/390
+ General fix ups for S/390 problems + Add keventd to S/390 for drivers + Update DASD driver + Add support for over 4K of partitions in procfs + Update S/390 to support new official ELF id + Update hwc, ctc and iucv + Fix a problem in the FPU emulator
Sparc
+ Add support for quad sbus sunhme + Update NFS compatibility syscalls + Add watchdog driver support + Update sparc64 syscall tables + Fix NETCTL_GETFD on sparc64
Security Updates
binfmt_misc binfmt_misc touched user pages directly and could be exploited.
CPIA driver An off by one buffer check in the CPIA driver allowed users to scribble into kernel memory
CPUID and MSR drivers Unloading and reloading these could cause a crash due to missing unregister calls. Normally not exploitable but if set to autoload and unload they could be abused.
Classifier Fix a possible hang in the classifier code.
get/setsockopt Mishandling of sign bits in setsockopt and getsockopt allowed local DoS and other attacks.
Ptrace/exec race Ptrace and exec as well as ptrace/suid races existed that could give a local user privileges.
Sockfilter Boundary cases in sockfilter could be abused. It is not clear if these are actually exploitable
strnlen_user Several problems with the implementation have been cured.
SYS5 shared memory A code path existed where the shm code would scribble on very recently freed memory. It is not clear that this was actually exploitable.
sysctl Mishandling of sign bits in sysctl allowed local users to scribble on kernel memory.
Tighten packet length checks The masquerading code checks were a little lax in some cases. None of these are believed actually exploitable however.
User access asm bug on x86 Certain obscure constant copies came out copying the wrong number of bytes. No known exploit or actual problem case is known but it potentially existed.
UDP Deadlock A local user could deadlock the kernel due to bugs in UDP port allocation.
Core Updates
Core Dump Write out core dumps as sparse files
Dcache aging Do aging on the dcache to improve behaviour under load
Hash functions Improve the inode and dcache hash functions
Misc device layer Reuse of the same minor number is now errored
Page cache coherency A problem existed on machines with ambiguous user/kernel addresses (the S/390) that could cause the page and buffer cache to lose coherency
Page fault Ensure a task always handles page faults in run state
Signal delivery Queued I/O completion delivery from interrupt context was unreliable
Virtual memory Revamp the core VM handling to remove a long standing deadlock.
Driver Updates
3c527 Update the 3c527 driver significantly
3c59x Significantly updated
8139too Updated with some of the fixes from 2.4
Advantech Watchdog Add support for the Advantech watchdog
AGP Added support for the Intel i815
ALi 5451 Fix hang on boot when the midi IRQ is shared
CMPCI Initialize driver if compiled into the kernel
COSA Fix a wrong memory free
CS46xx Fix a problem where the driver failed on the eMachines 400
CS89x0 Fix media selection
DAC960 Updated to authors latest version
DRM Remove the 'unused' AGP autoload hack from the DRM modules.
DVD Fix a problem with reading physical blocks from DVD
EEpro100 Fix posted write/delay problem.
EMU10K Fix problems when the emu10k was compiled built in
ES1370/1371/Solo1 Fix bugs shown up by some application ioctl sequences
ESS Maestro 3 Support for this chip has been added
I2O Update the i2o block driver.
i810 watchdog Added support for the watchdog on the i810 series chipsets
IDE Add support for the onstream SC-x0 series tape drives
Intel 'Panther' ethernet Driver for the onboard ethernet on this old Intel 486 board.
ISDN Extensively updated, new drivers for eicon, hsydn and other boards.
Lance Fix a dereference to freed memory
Lanstreamer Fix crashes on SMP boxes
LP driver Remove incorrect message
MDA console This driver has been cleaned up
Metricom Support new metricom units with longer serial numbers.
Microcode driver Updated to match 2.4
NE2000 PCI Added support for full duplex capable cards
SCC driver Fix a problem with the SCC driver would hang on multiple missed interrupts
SiS900 Add support for the ICS1893 PHY
SonicVibes Fix bugs shown up by some application ioctl sequences
Starfire New driver.
SX serial This driver failed to handle break events correctly
Synclink Updated and several bugs fixed
TGA frame buffer This driver can now be built as a module
Tulip Add basic support for the AMDtek Comet chip
USB ACM Loosen up end point rules to allow slightly non conforming hardware to work
USB audio Updated to match 2.4
USB Bluetooth driver Updated to match 2.4
USB DC2xx driver Updated to match 2.4
USB Empeg driver Updated to match 2.4
USB HID Updated to match 2.4. Fix endian problems and locking.
USB hub Fix locking on USB hub code
USB FTDI serial Updated to match 2.4
USB Keyspan serial Updated to match 2.4
USB printer Updated to match 2.4
USB Rio Updated to match 2.4
USB scanner Add further ids for new scanners (eg Epson 1240)
USB Serial Fix name reporting in procfs. Update core code to match 2.4
USB visor Update the driver to match 2.4
USBdevfs Fix missing unlock_kernel
VIA Rhine Added support for the VT6102
Yamaha PCI audio Add support to setup the legacy devices. Remove old legacy mode driver.
File System Updates
FAT Updated to handle pre 1980 dates properly
ISO9660 Fix several bugs shown up by more odd CD-ROMS
Minix subpartitions We now support minix subpartitions
NFS caching Fix a nasty bug in the NFS caching
NFS Client Various small fixes
SMBfs Updated to handle pre 1980 dates properly
Miscellaneous Updates
Belorussia NLS table Belorussia/Ukraine NLS table (koi8-ru)
Credits Update credits and maintainers files to reflect several moves
Parport Fix documentation
Ver_linux Update the ver_linux reporting script
Network Updates
Accept Add wake_one semantics to accept
AX.25 Fix a missing skb->protocol init
IRDA Backport the 2.4 IRDA oops fix. Document options.
Masquerading Update the core masquerading code. Fix problems with realaudio masquerading
QoS Remove experimental tag on QoS features
SLHC Fix endian problems in the VJ compression code
SunRPC Updated and RPC ping congestion check added
TCP/IP Fix problems in the TCP layer
Wireless Updated wireless headers
SCSI Updates
3Ware Update driver, add 7000 series support
AHA1542/AHA1740 Remove a bugs sense buffer size check
AIC7xxx Update AIC7xxx to v5.1.33
ATP870U Fix problems with disconnect
CpqFC Update Compaq fibrechannel driver
DC390 Small driver updates
ICP Vortex Driver updates from ICP
PPA scsi Fix panic on timeout. Update driver
Scsi_malloc Clean up out of memory paths - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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