Question

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

score 353 · Answer 1 · 2025-01-04 21:57:28

353

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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 177 · Answer 2 · 2025-01-04 21:58:20

177

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 553 · Answer 3 · 2025-01-04 21:56:40

553

Views

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

Published on 04 January 2025 at 21:56

score 638 · Answer 4 · 2025-01-04 21:54:36

638

Views

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

Published on 04 January 2025 at 21:54

score 53 · Answer 5 · 2025-01-04 21:56:32

53

Views

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

Published on 04 January 2025 at 21:56

score 82 · Answer 6 · 2025-01-04 21:51:50

82

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 418 · Answer 10 · 2025-01-04 21:54:34

418

Views

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

Published on 04 January 2025 at 21:54

score 339 · Answer 11 · 2025-01-04 21:50:31

339

Views

kernel output weird dmesg of my driver module

Published on 04 January 2025 at 21:50

score 322 · Answer 12 · 2025-01-04 21:47:02

322

Views

How to debug kernel log?

Published on 04 January 2025 at 21:47

score 94 · Answer 13 · 2025-01-04 21:47:17

94

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 647 · Answer 15 · 2025-01-04 21:54:32

647

Views

Segmentation fault while trying to boot after adding a device driver

Published on 04 January 2025 at 21:54

score 652 · Answer 16 · 2025-01-04 21:56:39

652

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 745 · Answer 18 · 2025-01-04 21:53:48

745

Views

Should Linux character devices terminate read() with newline

Published on 04 January 2025 at 21:53

score 829 · Answer 19 · 2025-01-04 21:51:13

829

Views

Simple character device not working as expected

Published on 04 January 2025 at 21:51

score 212 · Answer 20 · 2025-01-04 21:51:12

212

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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