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Filename Latest commit message Latest commit date
Petr Oros 2954b193eb Revert "be2net: disable bh with spin_lock in be_process_mcc" 
[ Upstream commit d6765985a42a660f078896d5c5b27f97c580a490 ]

Patch was based on wrong presumption that be_poll can be called only
from bh context. It reintroducing old regression (also reverted) and
causing deadlock when we use netconsole with benet in bonding.

Old revert: commit 072a9c4860 ("netpoll: revert 6bdb7fe310 and fix
be_poll() instead")

[  331.269715] bond0: (slave enp0s7f0): Releasing backup interface
[  331.270121] CPU: 4 PID: 1479 Comm: ifenslave Not tainted 5.13.0-rc7+ #2
[  331.270122] Call Trace:
[  331.270122] [c00000001789f200] [c0000000008c505c] dump_stack+0x100/0x174 (unreliable)
[  331.270124] [c00000001789f240] [c008000001238b9c] be_poll+0x64/0xe90 [be2net]
[  331.270125] [c00000001789f330] [c000000000d1e6e4] netpoll_poll_dev+0x174/0x3d0
[  331.270127] [c00000001789f400] [c008000001bc167c] bond_poll_controller+0xb4/0x130 [bonding]
[  331.270128] [c00000001789f450] [c000000000d1e624] netpoll_poll_dev+0xb4/0x3d0
[  331.270129] [c00000001789f520] [c000000000d1ed88] netpoll_send_skb+0x448/0x470
[  331.270130] [c00000001789f5d0] [c0080000011f14f8] write_msg+0x180/0x1b0 [netconsole]
[  331.270131] [c00000001789f640] [c000000000230c0c] console_unlock+0x54c/0x790
[  331.270132] [c00000001789f7b0] [c000000000233098] vprintk_emit+0x2d8/0x450
[  331.270133] [c00000001789f810] [c000000000234758] vprintk+0xc8/0x270
[  331.270134] [c00000001789f850] [c000000000233c28] printk+0x40/0x54
[  331.270135] [c00000001789f870] [c000000000ccf908] __netdev_printk+0x150/0x198
[  331.270136] [c00000001789f910] [c000000000ccfdb4] netdev_info+0x68/0x94
[  331.270137] [c00000001789f950] [c008000001bcbd70] __bond_release_one+0x188/0x6b0 [bonding]
[  331.270138] [c00000001789faa0] [c008000001bcc6f4] bond_do_ioctl+0x42c/0x490 [bonding]
[  331.270139] [c00000001789fb60] [c000000000d0d17c] dev_ifsioc+0x17c/0x400
[  331.270140] [c00000001789fbc0] [c000000000d0db70] dev_ioctl+0x390/0x890
[  331.270141] [c00000001789fc10] [c000000000c7c76c] sock_do_ioctl+0xac/0x1b0
[  331.270142] [c00000001789fc90] [c000000000c7ffac] sock_ioctl+0x31c/0x6e0
[  331.270143] [c00000001789fd60] [c0000000005b9728] sys_ioctl+0xf8/0x150
[  331.270145] [c00000001789fdb0] [c0000000000336c0] system_call_exception+0x160/0x2f0
[  331.270146] [c00000001789fe10] [c00000000000d35c] system_call_common+0xec/0x278
[  331.270147] --- interrupt: c00 at 0x7fffa6c6ec00
[  331.270147] NIP:  00007fffa6c6ec00 LR: 0000000105c4185c CTR: 0000000000000000
[  331.270148] REGS: c00000001789fe80 TRAP: 0c00   Not tainted  (5.13.0-rc7+)
[  331.270148] MSR:  800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>  CR: 28000428  XER: 00000000
[  331.270155] IRQMASK: 0
[  331.270156] GPR00: 0000000000000036 00007fffd494d5b0 00007fffa6d57100 0000000000000003
[  331.270158] GPR04: 0000000000008991 00007fffd494d6d0 0000000000000008 00007fffd494f28c
[  331.270161] GPR08: 0000000000000003 0000000000000000 0000000000000000 0000000000000000
[  331.270164] GPR12: 0000000000000000 00007fffa6dfa220 0000000000000000 0000000000000000
[  331.270167] GPR16: 0000000105c44880 0000000000000000 0000000105c60088 0000000105c60318
[  331.270170] GPR20: 0000000105c602c0 0000000105c44560 0000000000000000 0000000000000000
[  331.270172] GPR24: 00007fffd494dc50 00007fffd494d6a8 0000000105c60008 00007fffd494d6d0
[  331.270175] GPR28: 00007fffd494f27e 0000000105c6026c 00007fffd494f284 0000000000000000
[  331.270178] NIP [00007fffa6c6ec00] 0x7fffa6c6ec00
[  331.270178] LR [0000000105c4185c] 0x105c4185c
[  331.270179] --- interrupt: c00

This reverts commit d0d006a43e.

Fixes: d0d006a43e ("be2net: disable bh with spin_lock in be_process_mcc")
Signed-off-by: Petr Oros <poros@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:34 +02:00
arch KVM: nVMX: Ensure 64-bit shift when checking VMFUNC bitmap 2021-07-14 16:53:23 +02:00
block blk-wbt: make sure throttle is enabled properly 2021-07-14 16:53:25 +02:00
certs certs: Move load_system_certificate_list to a common function 2021-06-30 08:47:55 -04:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-14 16:53:13 +02:00
Documentation clocksource: Retry clock read if long delays detected 2021-07-14 16:53:18 +02:00
drivers Revert "be2net: disable bh with spin_lock in be_process_mcc" 2021-07-14 16:53:34 +02:00
fs dax: fix ENOMEM handling in grab_mapping_entry() 2021-07-14 16:53:25 +02:00
include net: sched: add barrier to ensure correct ordering for lockless qdisc 2021-07-14 16:53:31 +02:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc
kernel sched/uclamp: Fix uclamp_tg_restrict() 2021-07-14 16:53:24 +02:00
lib lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-14 16:53:16 +02:00
LICENSES
mm mm, futex: fix shared futex pgoff on shmem huge page 2021-06-30 08:47:55 -04:00
net bpfilter: Specify the log level for the kmsg message 2021-07-14 16:53:33 +02:00
samples samples/bpf: Fix the error return code of xdp_redirect's main() 2021-07-14 16:53:30 +02:00
scripts kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n' 2021-07-14 16:53:20 +02:00
security evm: fix writing <securityfs>/evm overflow 2021-07-14 16:53:21 +02:00
sound ALSA: hda/realtek: Apply LED fixup for HP Dragonfly G1, too 2021-07-14 16:52:59 +02:00
tools tc-testing: fix list handling 2021-07-14 16:53:31 +02:00
usr
virt KVM: do not allow mapping valid but non-reference-counted pages 2021-06-30 08:47:50 -04:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Makefile: fix GDB warning with CONFIG_RELR 2021-07-14 16:53:12 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.