Re: RFC: remove set_fs for m68k

Michael Schmitz
2021-08-23T04:05:00Z

On 23/08/21 07:33, Michael Schmitz wrote:
> Got this overnight:
>
>> [536154.200000] *** FORMAT ERROR *** FORMAT=0
>> [536154.210000] Current process id is 4656
>> [536154.230000] BAD KERNEL TRAP: 00000000
>> [536154.240000] Modules linked in: atari_scsi ne 8390p [last
>> unloaded: atari_scsi]
>> [536154.260000] PC: [<00002a8c>] resume_userspace+0x14/0x16
>> [536154.270000] SR: 2208 SP: 977bd1be a2: 8009b5e8
>> [536154.290000] d0: 8009b5e8 d1: cfcfcfcf d2: 00000000 d3:
>> ffffffff
>> [536154.300000] d4: 00000000 d5: 00000000 a0: 8008a108 a1:
>> 8009b7df
>> [536154.320000] Process savelog (pid: 4656, task=e49aa246)
>> [536154.330000] Frame format=0
>> [536154.340000] Stack from 00cc5fa4:
>> [536154.340000] 02088004 3666b008 1c0eb209 007eb5e8 8006a2d0
>> efaec378 8004366c 61ff61ff
>> [536154.340000] 8006a2d4 8006a2d2 00000000 030dfffb 0044fffa
>> 0e000000 fffa1a00 fffa1c00
>> [536154.340000] fffa1e00 fffb0e40 fffb0e80 00049b66 00000040
>> 005f5800 00000001
>> [536154.460000] Call Trace: [<00049b66>]
>> __handle_irq_event_percpu+0x38/0xce
>> [536154.530000]
>> [536154.540000] Code: 1029 0007 660c 4cdf 073e 201f 588f dfdf <4e73>
>> 254f 0400 e308 660a 487a ffe0 60ff 002d 13c6 598f 48e7 031e 486f 001c
>> 61ff
>> [536154.630000] Disabling lock debugging due to kernel taint
>
FWIW - that's the 'rte' at the end of resume_userspace /
ret_from_exception, which is on our interrupt return path.
Stack smash??

Cheers,

Michael