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linux/arch/parisc
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Helge Deller 386ee93cf0 parisc: Temporarily disable jump label support 
commit 3599bae489 upstream.

The 32-bit Debian kernel 6.12 fails to boot and crashes like this:

 init (pid 65): Protection id trap (code 7)
 CPU: 0 UID: 0 PID: 65 Comm: init Not tainted 6.12.9 #2
 Hardware name: 9000/778/B160L

      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
 PSW: 00000000000001000000000000001111 Not tainted
 r00-03  0004000f 110d39d0 109a6558 12974400
 r04-07  12a810e0 12a810e0 00000000 12a81144
 r08-11  12a81174 00000007 00000000 00000002
 r12-15  f8c55c08 0000006c 00000001 f8c55c08
 r16-19  00000002 f8c58620 002da3a8 0000004e
 r20-23  00001a46 0000000f 10754f84 00000000
 r24-27  00000000 00000003 12ae6980 1127b9d0
 r28-31  00000000 00000000 12974440 109a6558
 sr00-03  00000000 00000000 00000000 00000010
 sr04-07  00000000 00000000 00000000 00000000

 IASQ: 00000000 00000000 IAOQ: 110d39d0 110d39d4
  IIR: baadf00d    ISR: 00000000  IOR: 110d39d0
  CPU:        0   CR30: 128740c0 CR31: 00000000
  ORIG_R28: 000003f3
  IAOQ[0]: 0x110d39d0
  IAOQ[1]: 0x110d39d4
  RP(r2): security_sk_free+0x70/0x1a4
 Backtrace:
  [<10d8c844>] __sk_destruct+0x2bc/0x378
  [<10d8e33c>] sk_destruct+0x68/0x8c
  [<10d8e3dc>] __sk_free+0x7c/0x148
  [<10d8e560>] sk_free+0xb8/0xf0
  [<10f6420c>] unix_release_sock+0x3ac/0x50c
  [<10f643b8>] unix_release+0x4c/0x7c
  [<10d832f8>] __sock_release+0x5c/0xf8
  [<10d833b4>] sock_close+0x20/0x44
  [<107ba52c>] __fput+0xf8/0x468
  [<107baa08>] __fput_sync+0xb4/0xd4
  [<107b471c>] sys_close+0x44/0x94
  [<10405334>] syscall_exit+0x0/0x10

Bisecting points to this commit which triggers the issue:
	commit  417c5643cd
	Author: KP Singh <kpsingh@kernel.org>
	Date:   Fri Aug 16 17:43:07 2024 +0200
	        lsm: replace indirect LSM hook calls with static calls

After more analysis it seems that we don't fully implement the static calls
and jump tables yet. Additionally the functions which mark kernel memory
read-only or read-write-executable needs to be further enhanced to be able to
fully support static calls.

Enabling CONFIG_SECURITY_YAMA=y was one possibility to trigger the issue,
although YAMA isn't the reason for the fault.

As a temporary solution disable JUMP_LABEL functionality to
avoid the crashes.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Cc: <stable@vger.kernel.org> # v6.12+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-02-17 10:05:29 +01:00
..
boot move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
configs drm/display: Make DisplayPort CEC-over-AUX Kconfig name consistent 2024-03-28 11:26:47 +01:00
include mm: refactor arch_calc_vm_flag_bits() and arm64 MTE handling 2024-11-05 16:49:55 -08:00
kernel parisc/ftrace: Fix function graph tracing disablement 2024-12-05 14:02:52 +01:00
lib parisc: add u16 support to cmpxchg() 2024-04-09 22:06:00 -07:00
math-emu parisc/math-emu: Remove unused struct 'exc_reg' 2024-05-10 15:09:15 +02:00
mm ALong with the usual shower of singleton patches, notable patch series in 2024-09-21 07:29:05 -07:00
net parisc: fix unaligned accesses in BPF 2024-07-29 16:19:07 +02:00
video arch: Rename fbdev header and source files 2024-05-03 17:07:50 +02:00
defpalo.conf parisc: switch to gzip-compressed vmlinuz kernel 2013-07-09 22:09:20 +02:00
install.sh kbuild: Abort make on install failures 2024-07-20 13:34:54 +09:00
Kbuild parisc: Wire up eBPF JIT compiler 2023-08-22 10:24:47 +02:00
Kconfig parisc: Temporarily disable jump label support 2025-02-17 10:05:29 +01:00
Kconfig.debug parisc: Use page table locks only if DEBUG_KERNEL is enabled 2023-08-20 20:23:46 +02:00
Makefile arch: Select fbdev helpers with CONFIG_VIDEO 2024-05-03 17:07:50 +02:00