but allow discarding BTF information when loading modules, so that upgrades
which are otherwise ABI compatible still work. this allows using BTF
information when matching and available, while degrading gracefully if the
currently running kernel is not identical to the one that module was built for.
in case of a mismatch, the kernel will log a warning when loading the module,
for example:
Jan 30 13:57:58 test kernel: BPF: type_id=184 bits_offset=4096
Jan 30 13:57:58 test kernel: BPF:
Jan 30 13:57:58 test kernel: BPF: Invalid name
Jan 30 13:57:58 test kernel: BPF:
Jan 30 13:57:58 test kernel: failed to validate module [bonding] BTF: -22
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This is provdied by both initramfs-tools and dracut.
Required to be able to use dracut in place of
initramfs-tools.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
same info but shorter, avoiding cut-off on `uname -a` output due to
the relatively newly changed and reported "SMP PREEMPT_DYNAMIC" mode.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Useless since 5.5 and will fail build with 5.16+, see upstream linux
commit 7ecaf069da52 and 4fbce819337a for some details
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
we cannot make this a built-in easily due to kconfig dependency
resolution.
We'll handle the availability in initrd with a initramfs modules.d
snippet shipped by the meta package,
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
pve-headers-$(uname -r) is equivalent to
linux-headers-$(uname -r)-amd64
pve-kernel-$(uname -r) is equivalent to
linux-image-$(uname -r)-amd64
By adding a provides this should help users running
`apt install linux-headers-$(uname -r)-amd64` which is commonly
suggested in install instructions for third-party kernel-drivers on
plain debian.
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
used for compressing the kernel image, build fails if not installed.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Acked-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Reviewed-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Debian did so since 5.10~rc7-1~exp1 and ubuntu only disabled it due
some concerns about "high" memory usage on many-core systems[0], high
is to be seen relative here as its 26 MiB on 208 cores[1] and only
matters for ubuntu as due to their snaps they may have a lot of
active squashfs mounts.
Proxmox projects do not use snaps, or other things that uses squashfs
instances a tall besides the installer. While some users may use a
few it is unlikely to cause much problems (a few 100 MiB should not
be a big problem on a server with hundreds of online cores.
Any how, to speed up decompression in our installer and use a similar
setting as Debian, the distro we're most similar too, enable this
Kconfig knob.
[0]: https://bugs.launchpad.net/snappy/+bug/1636847
[1]: https://bugs.launchpad.net/snappy/+bug/1636847/comments/21
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
sometimes the build would fail with
cp: cannot stat 'ubuntu-hirsute/.tmp_1987275': No such file or directory
make[1]: *** [debian/rules:181: .headers_prepare_mark] Error 1
make[1]: Leaving directory '/home/fgruenbichler/pve-kernel/build'
dpkg-buildpackage: error: fakeroot debian/rules binary subprocess returned exit status 2
make: *** [Makefile:58: pve-kernel-5.11.21-1-pve_5.11.21-1_amd64.deb] Error 2
if copying was slow enough.
so let's do the copying first, then do the rest in parallel without
needing to worry about side-effects.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
needed for it to be a proper replacement for linux-libc-dev when
resolving dependencies, such as for liburing-dev
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
and put them into a new -dbgsym package for usage with
crash/kdump-tools/...
fixes#3465, and now allows to do the following (after installing
and configuring kdump-tools to collect kernel crash dumps) when the
system crashes:
$ apt install pve-kernel-5.11.21-1-dbgsym
$ crash /usr/lib/debug/boot/vmlinux-5.11.21-1-pve /var/crash/202106151236/dump.202106151236
crash 7.2.9
Copyright (C) 2002-2020 Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation
Copyright (C) 1999-2006 Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited
Copyright (C) 2006, 2007 VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. Enter "help copying" to see the conditions.
This program has absolutely no warranty. Enter "help warranty" for details.
GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu"...
WARNING: kernel relocated [812MB]: patching 136336 gdb minimal_symbol values
KERNEL: /usr/lib/debug/boot/vmlinux-5.11.21-1-pve
DUMPFILE: /var/crash/202106151236/dump.202106151236 [PARTIAL DUMP]
CPUS: 4
DATE: Tue Jun 15 12:36:38 CEST 2021
UPTIME: 00:06:21
LOAD AVERAGE: 0.04, 0.11, 0.08
TASKS: 272
NODENAME: test
RELEASE: 5.11.21-1-pve
VERSION: #1 SMP PVE 5.11.21-1 (Tue, 01 Jun 2021 16:38:57 +0200)
MACHINE: x86_64 (3696 Mhz)
MEMORY: 8 GB
PANIC: "Kernel panic - not syncing: sysrq triggered crash"
PID: 3167
COMMAND: "bash"
TASK: ffff9220c8f5be00 [THREAD_INFO: ffff9220c8f5be00]
CPU: 3
STATE: TASK_RUNNING (PANIC)
crash> bt
PID: 3167 TASK: ffff9220c8f5be00 CPU: 3 COMMAND: "bash"
#0 [ffffa24ec0bfbc80] machine_kexec at ffffffffb3c751f3
#1 [ffffa24ec0bfbce0] __crash_kexec at ffffffffb3d61092
#2 [ffffa24ec0bfbdb0] panic at ffffffffb47b769d
#3 [ffffa24ec0bfbe30] sysrq_handle_crash at ffffffffb434da4a
#4 [ffffa24ec0bfbe40] __handle_sysrq.cold at ffffffffb47e2cdc
#5 [ffffa24ec0bfbe78] write_sysrq_trigger at ffffffffb434e3f8
#6 [ffffa24ec0bfbe90] proc_reg_write at ffffffffb3fc09ea
#7 [ffffa24ec0bfbeb0] vfs_write at ffffffffb3f143b6
#8 [ffffa24ec0bfbee8] ksys_write at ffffffffb3f16b97
#9 [ffffa24ec0bfbf28] __x64_sys_write at ffffffffb3f16c2a
#10 [ffffa24ec0bfbf38] do_syscall_64 at ffffffffb480e868
#11 [ffffa24ec0bfbf50] entry_SYSCALL_64_after_hwframe at ffffffffb4a0008c
RIP: 00007f367f7baf33 RSP: 00007ffe6175dc98 RFLAGS: 00000246
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f367f7baf33
RDX: 0000000000000002 RSI: 0000560510e640b0 RDI: 0000000000000001
RBP: 0000560510e640b0 R8: 000000000000000a R9: 0000000000000001
R10: 0000560510e5f800 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f367f88b6a0 R14: 0000000000000002 R15: 00007f367f88b8a0
ORIG_RAX: 0000000000000001 CS: 0033 SS: 002b
as well as lots of other fun things (see 'help' after opening a crash dump).
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
The prepare/compile/install targets feel a bit mixed, so it's not
100% clear where this should happen.
But as the `.headers_compile_mark` already triggers various kernel
build targets with a correct kconfig setup, it is a good fit to add
the modules_prepare step (which is recommended to use when preparing
a out-of-three (OOT) module build environment like dkms expects)
there. As we can only copy (= install) the `scripts` directory
afterwards it follows that it needs to be moved afterwards. Moving
installing the `include` directory there is not really necessary but
it feels like a better place than the _prepare_ target and safes a
extra line, so move that over too.
In terms of actual changes to the built header package we get
additionally the, now generated, module.lds file.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Those files are generated by the `if_changed` macro from
scripts/Kbuild.include and are not really useful or interesting for
being shipped in the header packages and other distros (checked
Debian and Ubuntu) do not seem to ship those at all..
So, lets prune them to reduce shipped files dramatically, without
losing, well, anything.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
we do not use module signing currently.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
(cherry picked from commit 77470417db)
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
