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Filename Latest commit message Latest commit date
Rohit Maheshwari 8dc5025c6a net/tls: race causes kernel panic 
commit 38f7e1c0c43dd25b06513137bb6fd35476f9ec6d upstream.

BUG: kernel NULL pointer dereference, address: 00000000000000b8
 #PF: supervisor read access in kernel mode
 #PF: error_code(0x0000) - not-present page
 PGD 80000008b6fef067 P4D 80000008b6fef067 PUD 8b6fe6067 PMD 0
 Oops: 0000 [#1] SMP PTI
 CPU: 12 PID: 23871 Comm: kworker/12:80 Kdump: loaded Tainted: G S
 5.9.0-rc3+ #1
 Hardware name: Supermicro X10SRA-F/X10SRA-F, BIOS 2.1 03/29/2018
 Workqueue: events tx_work_handler [tls]
 RIP: 0010:tx_work_handler+0x1b/0x70 [tls]
 Code: dc fe ff ff e8 16 d4 a3 f6 66 0f 1f 44 00 00 0f 1f 44 00 00 55 53 48 8b
 6f 58 48 8b bd a0 04 00 00 48 85 ff 74 1c 48 8b 47 28 <48> 8b 90 b8 00 00 00 83
 e2 02 75 0c f0 48 0f ba b0 b8 00 00 00 00
 RSP: 0018:ffffa44ace61fe88 EFLAGS: 00010286
 RAX: 0000000000000000 RBX: ffff91da9e45cc30 RCX: dead000000000122
 RDX: 0000000000000001 RSI: ffff91da9e45cc38 RDI: ffff91d95efac200
 RBP: ffff91da133fd780 R08: 0000000000000000 R09: 000073746e657665
 R10: 8080808080808080 R11: 0000000000000000 R12: ffff91dad7d30700
 R13: ffff91dab6561080 R14: 0ffff91dad7d3070 R15: ffff91da9e45cc38
 FS:  0000000000000000(0000) GS:ffff91dad7d00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00000000000000b8 CR3: 0000000906478003 CR4: 00000000003706e0
 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 Call Trace:
  process_one_work+0x1a7/0x370
  worker_thread+0x30/0x370
  ? process_one_work+0x370/0x370
  kthread+0x114/0x130
  ? kthread_park+0x80/0x80
  ret_from_fork+0x22/0x30

tls_sw_release_resources_tx() waits for encrypt_pending, which
can have race, so we need similar changes as in commit
0cada33241d9de205522e3858b18e506ca5cce2c here as well.

Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-14 10:33:06 +02:00
arch arm64: dts: stratix10: add status to qspi dts node 2020-10-14 10:32:59 +02:00
block block/diskstats: more accurate approximation of io_ticks for slow disks 2020-10-07 08:01:29 +02:00
certs
crypto crypto: af_alg - Work around empty control messages without MSG_MORE 2020-09-03 11:27:05 +02:00
Documentation block/diskstats: more accurate approximation of io_ticks for slow disks 2020-10-07 08:01:29 +02:00
drivers mmc: core: don't set limits.discard_granularity as 0 2020-10-14 10:33:05 +02:00
fs cifs: Fix incomplete memory allocation on setxattr path 2020-10-14 10:33:01 +02:00
include mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged 2020-10-14 10:33:05 +02:00
init kprobes: tracing/kprobes: Fix to kill kprobes on initmem after boot 2020-10-01 13:18:23 +02:00
ipc
kernel perf: Fix task_function_call() error handling 2020-10-14 10:33:05 +02:00
lib Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts 2020-10-14 10:32:56 +02:00
LICENSES
mm mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged 2020-10-14 10:33:05 +02:00
net net/tls: race causes kernel panic 2020-10-14 10:33:06 +02:00
samples bpf: Fix fds_example SIGSEGV error 2020-08-19 08:16:03 +02:00
scripts scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting 2020-10-07 08:01:29 +02:00
security device_cgroup: Fix RCU list debugging warning 2020-10-01 13:18:13 +02:00
sound ALSA: hda/realtek: Enable front panel headset LED on Lenovo ThinkStation P520 2020-10-01 13:18:22 +02:00
tools perf top: Fix stdio interface input handling with glibc 2.28+ 2020-10-14 10:32:59 +02:00
usr
virt KVM: arm64: Assume write fault on S1PTW permission fault on instruction fetch 2020-10-01 13:18:25 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile Linux 5.4.70 2020-10-07 08:01:31 +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.