Question

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

score 368 · Answer 1 · 2025-01-04 21:57:28

368

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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 192 · Answer 2 · 2025-01-04 21:58:20

192

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 567 · Answer 3 · 2025-01-04 21:56:40

567

Views

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

Published on 04 January 2025 at 21:56

score 651 · Answer 4 · 2025-01-04 21:54:36

651

Views

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

Published on 04 January 2025 at 21:54

score 67 · Answer 5 · 2025-01-04 21:56:32

67

Views

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

Published on 04 January 2025 at 21:56

score 93 · Answer 6 · 2025-01-04 21:51:50

93

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 6.2k · Answer 8 · 2025-01-04 21:51:16

6.2k

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

432

Views

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

Published on 04 January 2025 at 21:54

score 343 · Answer 11 · 2025-01-04 21:50:31

343

Views

kernel output weird dmesg of my driver module

Published on 04 January 2025 at 21:50

score 327 · Answer 12 · 2025-01-04 21:47:02

327

Views

How to debug kernel log?

Published on 04 January 2025 at 21:47

score 98 · Answer 13 · 2025-01-04 21:47:17

98

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

650

Views

Segmentation fault while trying to boot after adding a device driver

Published on 04 January 2025 at 21:54

score 654 · Answer 16 · 2025-01-04 21:56:39

654

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

750

Views

Should Linux character devices terminate read() with newline

Published on 04 January 2025 at 21:53

score 834 · Answer 19 · 2025-01-04 21:51:13

834

Views

Simple character device not working as expected

Published on 04 January 2025 at 21:51

score 216 · Answer 20 · 2025-01-04 21:51:12

216

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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