opnsense-src/sys
Austin Shafer 09b0401e91 linuxkpi: fix iteration in __sg_alloc_table_from_pages
Commit 3f686532c9 tried to fix an issue with not properly starting
at the first page in the sg list to prevent a panic. This worked but
with the side effect of incrementing "s" during the final iteration
causing it to be NULL since the list had ended.
In cases non-DEBUG kernels this causes a panic with drm-5.15, since
"s" is NULL when we later pass it to sg_mark_end().
This change decouples the iteration sg from the return value so that
it is never incremented past the final page in the chain.

MFC after:	3 days
Reviewed by:	manu
Differential Revision: https://reviews.freebsd.org/D41574
2023-09-06 14:37:12 +00:00
..
amd64 linux(4): Deduplicate mmap2 2023-09-05 21:16:39 +03:00
arm arm: Add a userspace physical timer check 2023-09-01 10:49:18 +01:00
arm64 linux(4): Validate exec_setregs on arm64 2023-09-05 21:19:08 +03:00
bsm timerfd: Move implementation from linux compat to sys/kern 2023-08-24 14:28:56 -06:00
cam cam/scsi_da: Bump deprecation one release. 2023-08-23 22:34:41 -06:00
cddl dtrace: Fix a kernel panic in printm() 2023-09-06 10:00:59 -04:00
compat linuxkpi: fix iteration in __sg_alloc_table_from_pages 2023-09-06 14:37:12 +00:00
conf Add INIT_ALL build option 2023-09-01 17:54:24 +01:00
contrib iwlwifi/LinuxKPI: 802.11: update ieee80211_request_smps() 2023-09-05 21:14:25 +00:00
crypto armv8_crypto: fix recursive fpu_kern_enter call 2023-09-01 10:56:58 +01:00
ddb sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
dev qat: Intel 4xxx Series driver API extension 2023-09-06 10:00:59 -04:00
dts sys: Remove $FreeBSD$: one-line bare tag 2023-08-16 11:55:17 -06:00
fs vfs: copy_file_range() between multiple mountpoints of the same fs type 2023-09-06 14:28:23 +02:00
gdb sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
geom geom_linux_lvm: Check the offset of physical volume header 2023-08-22 17:20:10 +08:00
gnu sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
i386 linux(4): Deduplicate mmap2 2023-09-05 21:16:39 +03:00
isa sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
kern vfs: copy_file_range() between multiple mountpoints of the same fs type 2023-09-06 14:28:23 +02:00
kgssapi sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
libkern sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
modules rtw88: temporary disconnect from build 2023-09-05 21:13:19 +00:00
net net: Check per-flow priority code point for untagged traffic 2023-09-06 18:15:14 +08:00
net80211 sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
netgraph sys: Remove $FreeBSD$: one-line bare tag 2023-08-16 11:55:17 -06:00
netinet tcp: Initialize the maximum number of entries in a client cookie cache bucket 2023-09-03 04:34:07 +08:00
netinet6 sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
netipsec sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
netlink sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
netpfil pf: retire pf_krule_to_rule and pf_kpool_to_pool 2023-09-01 18:18:02 +00:00
netsmb sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
nfs sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
nfsclient sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
nfsserver sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
nlm sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ofed ofed: mask seq_num identifier to occupy only 3 bytes 2023-08-22 16:09:13 -07:00
opencrypto sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
powerpc Add cpu_sync_core() 2023-08-23 03:02:21 +03:00
riscv riscv: Don't print zero offsets for register addresses 2023-09-05 09:12:27 -07:00
rpc sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
security mac_ipacl: Use IfAPI 2023-08-25 12:50:39 -04:00
sys timerfd: Namespace pollution adjustments 2023-09-05 16:25:01 -06:00
teken sys: Remove $FreeBSD$: two-line nroff pattern 2023-08-16 11:55:06 -06:00
tests sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
tools pccarddevs2h.awk: Remove 2023-08-25 15:12:44 -06:00
ufs sys: Remove $FreeBSD$: one-line bare tag 2023-08-16 11:55:17 -06:00
vm add pmap_active_cpus() 2023-08-23 03:02:21 +03:00
x86 x86: Introduce APIC ID limit by default on AMD hardware 2023-08-29 13:25:30 -04:00
xdr sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
xen sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
Makefile sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
README.md sys/README.md: Add a section for documentation 2023-08-03 11:07:41 -03:00

FreeBSD Kernel Source:

This directory contains the source files and build glue that make up the FreeBSD kernel and its modules, including both original and contributed software.

Kernel configuration files are located in the conf/ subdirectory of each architecture. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries. LINT is a compile-only configuration used to maximize build coverage and detect regressions.

Documentation:

Source code documentation is maintained in a set of man pages, under section 9. These pages are located in share/man/man9, from the top-level of the src tree. Consult intro(9) for an overview of existing pages.

Some additional high-level documentation of the kernel is maintained in the Architecture Handbook.

Source Roadmap:

Directory Description
amd64 AMD64 (64-bit x86) architecture support
arm 32-bit ARM architecture support
arm64 64-bit ARM (AArch64) architecture support
cam Common Access Method storage subsystem - cam(4) and ctl(4)
cddl CDDL-licensed optional sources such as DTrace
conf kernel build glue
compat Linux compatibility layer, FreeBSD 32-bit compatibility
contrib 3rd-party imported software such as OpenZFS
crypto crypto drivers
ddb interactive kernel debugger - ddb(4)
fs most filesystems, excluding UFS, NFS, and ZFS
dev device drivers and other arch independent code
gdb kernel remote GDB stub - gdb(4)
geom GEOM framework - geom(4)
i386 i386 (32-bit x86) architecture support
kern main part of the kernel
libkern libc-like and other support functions for kernel use
modules kernel module infrastructure
net core networking code
net80211 wireless networking (IEEE 802.11) - net80211(4)
netgraph graph-based networking subsystem - netgraph(4)
netinet IPv4 protocol implementation - inet(4)
netinet6 IPv6 protocol implementation - inet6(4)
netipsec IPsec protocol implementation - ipsec(4)
netpfil packet filters - ipfw(4), pf(4), and ipfilter(4)
opencrypto OpenCrypto framework - crypto(7)
powerpc PowerPC/POWER (32 and 64-bit) architecture support
riscv 64-bit RISC-V architecture support
security security facilities - audit(4) and mac(4)
sys kernel headers
tests kernel unit tests
ufs Unix File System - ffs(7)
vm virtual memory system
x86 code shared by AMD64 and i386 architectures