Andreas Kling 16850423cf Kernel: Fix deadlock caused by page faults while holding disk cache lock ... If the data passed to sys$write() is backed by a not-yet-paged-in inode mapping, we could end up in a situation where we get a page fault when trying to copy data from userspace. If that page fault handler tried reading from an inode that someone else had locked while waiting for the disk cache lock, we'd deadlock. This patch fixes the issue by copying the userspace data into a local buffer before acquiring the disk cache lock. This is not ideal since it incurs an extra copy, and I'm sure we can think of a better solution eventually. This was a frequent cause of startup deadlocks on x86_64 for me. :^)		2021-12-26 00:42:51 +01:00
..
AnonymousFile.cpp	Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>	2021-11-08 01:10:53 +01:00
AnonymousFile.h	Everywhere: Fix -Winconsistent-missing-override warnings from Clang	2021-12-11 13:14:15 -08:00
BlockBasedFileSystem.cpp	Kernel: Fix deadlock caused by page faults while holding disk cache lock	2021-12-26 00:42:51 +01:00
BlockBasedFileSystem.h	Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>	2021-11-08 01:10:53 +01:00
Custody.cpp	Kernel: Add implied auto-specifiers in FileSystem	2021-12-15 23:34:11 -08:00
Custody.h	Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>	2021-11-08 01:10:53 +01:00
DeviceFileTypes.h	Kernel: Make major and minor numbers to be DistinctNumerics	2021-12-23 23:02:39 +01:00
DevPtsFS.cpp	Everywhere: Pass AK::StringView by value	2021-11-11 01:27:46 +01:00
DevPtsFS.h	Everywhere: Pass AK::StringView by value	2021-11-11 01:27:46 +01:00
DevTmpFS.cpp	Kernel: Make major and minor numbers to be DistinctNumerics	2021-12-23 23:02:39 +01:00
DevTmpFS.h	Kernel: Make major and minor numbers to be DistinctNumerics	2021-12-23 23:02:39 +01:00
ext2_fs.h	Everywhere: Behaviour => Behavior	2021-09-07 13:53:14 +02:00
ext2_types.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Ext2FileSystem.cpp	Kernel+LibC: Move errno definitions to Kernel/API/POSIX	2021-12-16 22:21:35 +03:30
Ext2FileSystem.h	Kernel: Always initialize ext2_inode and ext_super_block structs	2021-12-22 13:29:31 -08:00
FIFO.cpp	Kernel: Make File::stat() & friends return Error<struct stat>	2021-12-18 11:30:10 +01:00
FIFO.h	Kernel: Make File::stat() & friends return Error<struct stat>	2021-12-18 11:30:10 +01:00
File.cpp	Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>	2021-11-08 01:10:53 +01:00
File.h	Kernel: Make File::stat() & friends return Error<struct stat>	2021-12-18 11:30:10 +01:00
FileBackedFileSystem.cpp	Kernel: Rename FileDescription => OpenFileDescription	2021-09-07 13:53:14 +02:00
FileBackedFileSystem.h	Kernel: Rename FileDescription => OpenFileDescription	2021-09-07 13:53:14 +02:00
FileSystem.cpp	Kernel: Use DistinctNumeric for filesystem ID's	2021-11-18 21:11:30 +01:00
FileSystem.h	Kernel: Use DistinctNumeric for filesystem ID's	2021-11-18 21:11:30 +01:00
Inode.cpp	Kernel: Use copy_typed_from_user() in more places :^)	2021-12-18 11:30:10 +01:00
Inode.h	Kernel: Remove unused Inode::preopen_fd()	2021-12-06 19:22:16 +01:00
InodeFile.cpp	Kernel+LibC: Move errno definitions to Kernel/API/POSIX	2021-12-16 22:21:35 +03:30
InodeFile.h	Kernel: Make File::stat() & friends return Error<struct stat>	2021-12-18 11:30:10 +01:00
InodeIdentifier.h	Kernel: Use DistinctNumeric for filesystem ID's	2021-11-18 21:11:30 +01:00
InodeMetadata.h	Kernel: Make major and minor numbers to be DistinctNumerics	2021-12-23 23:02:39 +01:00
InodeWatcher.cpp	Kernel: Handle string format errors in FileSystem APIs :^)	2021-11-30 11:16:35 +01:00
InodeWatcher.h	Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>	2021-11-08 01:10:53 +01:00
ISO9660FileSystem.cpp	Kernel: Add implied auto-specifiers in FileSystem	2021-12-15 23:34:11 -08:00
ISO9660FileSystem.h	Everywhere: Pass AK::StringView by value	2021-11-11 01:27:46 +01:00
Mount.cpp	Kernel: Make VirtualFileSystem::Mount a top-level class	2021-07-11 00:51:06 +02:00
Mount.h	Kernel: Fix missing include in FileSystem/Mount.h	2021-12-15 23:34:11 -08:00
OpenFileDescription.cpp	Kernel: Make File::stat() & friends return Error<struct stat>	2021-12-18 11:30:10 +01:00
OpenFileDescription.h	Kernel: Make File::stat() & friends return Error<struct stat>	2021-12-18 11:30:10 +01:00
Plan9FileSystem.cpp	Kernel: Remove else statements after return in Plan9FileSystem.cpp	2021-12-15 23:34:11 -08:00
Plan9FileSystem.h	Everywhere: Pass AK::StringView by value	2021-11-11 01:27:46 +01:00
ProcFS.cpp	Kernel+LibC: Move errno definitions to Kernel/API/POSIX	2021-12-16 22:21:35 +03:30
ProcFS.h	Everywhere: Fix -Winconsistent-missing-override warnings from Clang	2021-12-11 13:14:15 -08:00
SysFS.cpp	Kernel: Add implied auto-specifiers in FileSystem	2021-12-15 23:34:11 -08:00
SysFS.h	Kernel/SysFS: Prevent allocation for component name during construction	2021-12-14 09:01:33 +01:00
SysFSComponent.cpp	Kernel/SysFS: Prevent allocation for component name during construction	2021-12-14 09:01:33 +01:00
SysFSComponent.h	Kernel/SysFS: Prevent allocation for component name during construction	2021-12-14 09:01:33 +01:00
TmpFS.cpp	Everywhere: Pass AK::StringView by value	2021-11-11 01:27:46 +01:00
TmpFS.h	Everywhere: Pass AK::StringView by value	2021-11-11 01:27:46 +01:00
UnveilNode.h	Kernel: Move UnveilNode.h into Kernel/FileSystem/	2021-08-06 14:11:45 +02:00
VirtualFileSystem.cpp	Kernel: Move symlink recursion limit to .h, increase it to 8	2021-12-21 12:54:11 -08:00
VirtualFileSystem.h	Kernel: Move symlink recursion limit to .h, increase it to 8	2021-12-21 12:54:11 -08:00