Question

mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)

score 348 · Answer 1 · 2025-01-04 21:57:28

348

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mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)

Published on 04 January 2025 at 21:57

score 172 · Answer 2 · 2025-01-04 21:58:20

172

Views

Writing to a simple char device module from the user space with echo - Cannot see the write taking place

Published on 04 January 2025 at 21:58

score 548 · Answer 3 · 2025-01-04 21:56:40

548

Views

why Variable has incomplete type 'struct file_operations' though importing fs.h?

Published on 04 January 2025 at 21:56

score 634 · Answer 4 · 2025-01-04 21:54:36

634

Views

Why doesn't device_create return error when a file already exists?

Published on 04 January 2025 at 21:54

score 49 · Answer 5 · 2025-01-04 21:56:32

49

Views

Infinite printing on read command of character device (through cat command)

Published on 04 January 2025 at 21:56

score 76 · Answer 6 · 2025-01-04 21:51:50

76

Views

Python reads empty bytearray from character device

Published on 04 January 2025 at 21:51

score 2.5k · Answer 7 · 2025-01-04 21:49:23

2.5k

Views

Write to debugfs from Linux Kernel Module

Published on 04 January 2025 at 21:49

score 6.1k · Answer 8 · 2025-01-04 21:51:16

6.1k

Views

Getting ENOTTY on ioctl for a Linux Kernel Module

Published on 04 January 2025 at 21:51

score 1.2k · Answer 9 · 2025-01-04 21:54:35

1.2k

Views

map reserver memory at boot to user space using remap_pfn_range

Published on 04 January 2025 at 21:54

score 413 · Answer 10 · 2025-01-04 21:54:34

413

Views

Why does module failed to load? (/dev/scull0 : no such device or address)

Published on 04 January 2025 at 21:54

score 334 · Answer 11 · 2025-01-04 21:50:31

334

Views

kernel output weird dmesg of my driver module

Published on 04 January 2025 at 21:50

score 319 · Answer 12 · 2025-01-04 21:47:02

319

Views

How to debug kernel log?

Published on 04 January 2025 at 21:47

score 91 · Answer 13 · 2025-01-04 21:47:17

91

Views

Replacing `chardev` by `mmap`

Published on 04 January 2025 at 21:47

score 1.4k · Answer 14 · 2025-01-04 21:51:15

1.4k

Views

Why does cat call read() twice when once was enough?

Published on 04 January 2025 at 21:51

score 643 · Answer 15 · 2025-01-04 21:54:32

643

Views

Segmentation fault while trying to boot after adding a device driver

Published on 04 January 2025 at 21:54

score 647 · Answer 16 · 2025-01-04 21:56:39

647

Views

how to get struct device's private data in the Linux's chrdev ->open() function?

Published on 04 January 2025 at 21:56

score 18k · Answer 17 · 2025-01-04 21:54:32

18k

Views

Opening a device file fails due to No such device or address

Published on 04 January 2025 at 21:54

score 742 · Answer 18 · 2025-01-04 21:53:48

742

Views

Should Linux character devices terminate read() with newline

Published on 04 January 2025 at 21:53

score 826 · Answer 19 · 2025-01-04 21:51:13

826

Views

Simple character device not working as expected

Published on 04 January 2025 at 21:51

score 208 · Answer 20 · 2025-01-04 21:51:12

208

Views

How stable are major and minor mode of a chardev?

Published on 04 January 2025 at 21:51

List Question

mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)

Writing to a simple char device module from the user space with echo - Cannot see the write taking place

why Variable has incomplete type 'struct file_operations' though importing fs.h?

Why doesn't device_create return error when a file already exists?

Infinite printing on read command of character device (through cat command)

Python reads empty bytearray from character device

Write to debugfs from Linux Kernel Module

Getting ENOTTY on ioctl for a Linux Kernel Module

map reserver memory at boot to user space using remap_pfn_range

Why does module failed to load? (/dev/scull0 : no such device or address)

kernel output weird dmesg of my driver module

How to debug kernel log?

Replacing `chardev` by `mmap`

Why does cat call read() twice when once was enough?

Segmentation fault while trying to boot after adding a device driver

how to get struct device's private data in the Linux's chrdev ->open() function?

Opening a device file fails due to No such device or address

Should Linux character devices terminate read() with newline

Simple character device not working as expected

How stable are major and minor mode of a chardev?

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