Re: [PATCH v6 09/13] module: Move kallsyms support into a separate file

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Le 18/02/2022 à 22:25, Aaron Tomlin a écrit :
> No functional change.
> 
> This patch migrates kallsyms code out of core module
> code kernel/module/kallsyms.c
> 
> Signed-off-by: Aaron Tomlin <atomlin@xxxxxxxxxx>

With this patch I get an Oops:

[   36.421711] BUG: Unable to handle kernel data access on write at 
0xbe79bb40
[   36.428435] Faulting instruction address: 0xc008b74c
[   36.433342] Oops: Kernel access of bad area, sig: 11 [#1]
[   36.438672] BE PAGE_SIZE=16K PREEMPT CMPC885
[   36.442947] SAF3000 DIE NOTIFICATION
[   36.446421] Modules linked in:
[   36.449436] CPU: 0 PID: 374 Comm: insmod Not tainted 
5.17.0-rc4-s3k-dev-02274-g7d4ec8831803 #1016
[   36.458211] NIP:  c008b74c LR: c00897ac CTR: c001145c
[   36.463200] REGS: caf8bcf0 TRAP: 0300   Not tainted 
(5.17.0-rc4-s3k-dev-02274-g7d4ec8831803)
[   36.471633] MSR:  00009032 <EE,ME,IR,DR,RI>  CR: 24002842  XER: 00000000
[   36.478261] DAR: be79bb40 DSISR: c2000000
[   36.478261] GPR00: c00899a0 caf8bdb0 c230a980 be74c000 caf8beb8 
00000008 00000000 c035629c
[   36.478261] GPR08: be75c000 caf9c9fc be79bb40 00000004 24002842 
100d166a 00000290 00000000
[   36.478261] GPR16: c0747320 caf9c9fc c11ff918 caf9b2a7 be75c290 
00000550 00000022 c0747210
[   36.478261] GPR24: c11ff8e8 be74c000 c11ff8fc 100b8820 00000000 
00000000 be74c000 caf8beb8
[   36.516729] NIP [c008b74c] add_kallsyms+0x48/0x30c
[   36.521465] LR [c00897ac] load_module+0x16f8/0x2504
[   36.526286] Call Trace:
[   36.528693] [caf8bdb0] [00000208] 0x208 (unreliable)
[   36.533598] [caf8bde0] [c00899a0] load_module+0x18ec/0x2504
[   36.539107] [caf8beb0] [c008a7a8] sys_finit_module+0xb4/0xf8
[   36.544700] [caf8bf30] [c00120a4] ret_from_syscall+0x0/0x28
[   36.550209] --- interrupt: c00 at 0xfd5e7c0
[   36.554339] NIP:  0fd5e7c0 LR: 100144e8 CTR: 10013238
[   36.559331] REGS: caf8bf40 TRAP: 0c00   Not tainted 
(5.17.0-rc4-s3k-dev-02274-g7d4ec8831803)
[   36.567763] MSR:  0000d032 <EE,PR,ME,IR,DR,RI>  CR: 24002222  XER: 
00000000
[   36.574735]
[   36.574735] GPR00: 00000161 7fc5a130 7792f4e0 00000003 100b8820 
00000000 0fd4ded4 0000d032
[   36.574735] GPR08: 00000000 10013238 00000000 00000002 142d2297 
100d166a 100a0920 00000000
[   36.574735] GPR16: 100cac0c 100b0000 1013c3cc 1013d685 100d0000 
100d0000 00000000 100a0900
[   36.574735] GPR24: ffffffa2 ffffffff 1013c3a4 00000003 1013c3cc 
100b8820 1013c3f0 1013c3cc
[   36.610535] NIP [0fd5e7c0] 0xfd5e7c0
[   36.614065] LR [100144e8] 0x100144e8
[   36.617593] --- interrupt: c00
[   36.620609] Instruction dump:
[   36.623534] 7c7e1b78 81040038 8124003c 81430100 55082036 7d0a4214 
1d490028 81240010
[   36.631365] 9103015c 7d295214 8109000c 8143015c <910a0000> 81290014 
8143015c 5529e13e
[   36.639376] ---[ end trace 0000000000000000 ]---


Christophe




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