Brian Gianforcaro 6830963321 Kernel: Validate we don't hold s_mm_lock during context switch ... Since `s_mm_lock` is a RecursiveSpinlock, if a kernel thread gets preempted while accidentally hold the lock during switch_context, another thread running on the same processor could end up manipulating the state of the memory manager even though they should not be able to. It will just bump the recursion count and keep going. This appears to be the root cause of weird bugs like: #7359 Where page protection magically appears to be wrong during execution. To avoid these cases lets guard this specific unfortunate case and make sure it can never go unnoticed ever again. The assert was Tom's idea to help debug this, so I am going to tag him as co-author of this commit. Co-Authored-By: Tom <tomut@yahoo.com>		2021-05-25 10:35:41 +02:00
..
ACPI	Kernel/ACPI: Map two pages when reading the FADT	2021-05-08 19:15:54 +02:00
API	Kernel: Add statvfs & fstatvfs Syscalls	2021-05-19 21:33:29 +02:00
Arch	Kernel/CPU: Fix awkward printing early on boot	2021-05-21 22:38:26 +01:00
Devices	Kernel: Process request to change virtual console from the IO Work queue	2021-05-21 08:08:33 +02:00
FileSystem	Kernel: Remove an allocation from VFS::resolve_path_without_veil (#7287)	2021-05-22 00:12:32 +02:00
Graphics	Kernel/Graphics: Indicate initialization failed if no device was found	2021-05-21 17:58:53 +01:00
Heap	Kernel: Add support for profiling kmalloc()/kfree()	2021-05-19 22:51:42 +02:00
Interrupts	Kernel: Add Processor::is_bootstrap_processor() function, and use it. (#6871)	2021-05-05 18:48:26 +02:00
Modules	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Net	Kernel/Net: Make interfaces to have persistent names	2021-05-22 11:19:50 +01:00
PCI	Kernel/PCI: Fix support of multiple PCI host controllers enumeration	2021-05-21 17:58:53 +01:00
Storage	Kernel: Don't ref-count UsedMemoryRange during iteration	2021-05-16 19:58:33 +02:00
Syscalls	Kernel: Disable profiling if setting up the buffer or timer failed	2021-05-24 09:10:50 +02:00
Tasks	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Time	Kernel: Fix return value for {enable,disable}_profile_timer()	2021-05-17 21:53:04 +02:00
TTY	LibVT: Add Alternate Screen Buffer support	2021-05-24 22:26:54 +04:30
VirtIO	Kernel: Reorder VirtIODevice PCI initialization steps	2021-05-15 23:29:03 +01:00
VM	Kernel: Release the paging lock while reading from the disk	2021-05-25 10:35:41 +02:00
AddressSanitizer.cpp	Everywhere: Use bgianf@serenityos.org for my copyright attribution	2021-04-22 21:15:54 +02:00
AddressSanitizer.h	Everywhere: Use bgianf@serenityos.org for my copyright attribution	2021-04-22 21:15:54 +02:00
Assertions.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
CMakeLists.txt	Meta: Make generate_state_machine() generate a proper target	2021-05-20 12:11:27 +01:00
CMOS.cpp	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
CMOS.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
CommandLine.cpp	Kernel/Commandline: Allow the user to specify an embedded string	2021-05-21 22:38:26 +01:00
CommandLine.h	Kernel/Commandline: Allow the user to specify an embedded string	2021-05-21 22:38:26 +01:00
ConsoleDevice.cpp	Kernel: Rename Console => ConsoleDevice	2021-05-16 19:58:33 +02:00
ConsoleDevice.h	Kernel: Rename Console => ConsoleDevice	2021-05-16 19:58:33 +02:00
CoreDump.cpp	Everywhere: Use linusg@serenityos.org for my copyright headers	2021-04-22 22:51:19 +02:00
CoreDump.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Debug.h.in	Kernel/Graphics + SystemServer: Support text mode properly	2021-05-16 19:58:33 +02:00
DMI.cpp	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
DMI.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
DoubleBuffer.cpp	Kernel: Don't update write_pos in DoubleBuffer if userspace copy fails	2021-05-18 16:47:26 +02:00
DoubleBuffer.h	Kernel: Implement peek() function for DoubleBuffer	2021-04-29 08:09:53 +02:00
Forward.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
FutexQueue.cpp	Everywhere: Use "the SerenityOS developers." in copyright headers	2021-04-29 00:59:26 +02:00
FutexQueue.h	Everywhere: Use "the SerenityOS developers." in copyright headers	2021-04-29 00:59:26 +02:00
init.cpp	Kernel+LibC: Add support for filtering profiling events	2021-05-19 22:51:42 +02:00
IO.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
KBuffer.h	Kernel: Make KBuffer::try_create_with* APIs OOM safe	2021-05-13 16:21:53 +02:00
KBufferBuilder.cpp	Kernel: Replace make<T>() with adopt_own_if_nonnull() in KBufferBuilder	2021-05-13 16:21:53 +02:00
KBufferBuilder.h	Kernel: Avoid allocations in KBufferBuilder::appendff	2021-05-13 08:27:42 +02:00
kprintf.cpp	Kernel: Implement a PCI Serial Device driver	2021-05-17 18:15:25 +02:00
KResult.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
kstdio.h	Kernel/Graphics + SystemServer: Support text mode properly	2021-05-16 19:58:33 +02:00
KSyms.cpp	Kernel: Check kernel symbol's name length matches searched name	2021-04-28 22:14:32 +02:00
KSyms.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
linker.ld	Kernel: Define a KERNEL_VIRTUAL_BASE in the linker script	2021-03-04 18:25:01 +01:00
Lock.cpp	Kernel: Utilize AK::SourceLocation for LOCK_DEBUG instrumentation.	2021-04-25 09:38:27 +02:00
Lock.h	Kernel: Add ScopedLockRelease to temporarily release a Lock	2021-05-25 10:35:41 +02:00
LockMode.h	Everywhere: Use "the SerenityOS developers." in copyright headers	2021-04-29 00:59:26 +02:00
mkmap.sh	Build: Switch to CMake :^)	2020-05-14 20:15:18 +02:00
Module.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Multiboot.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Panic.cpp	Kernel/Graphics + SystemServer: Support text mode properly	2021-05-16 19:58:33 +02:00
Panic.h	Kernel/Graphics + SystemServer: Support text mode properly	2021-05-16 19:58:33 +02:00
PerformanceEventBuffer.cpp	Kernel: Generate page fault events from the kernel profiler	2021-05-19 22:51:42 +02:00
PerformanceEventBuffer.h	Kernel: Add support for profiling kmalloc()/kfree()	2021-05-19 22:51:42 +02:00
PerformanceManager.h	Kernel: Make sure we only log profiling events when m_profiling is true	2021-05-23 23:54:30 +01:00
PhysicalAddress.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Process.cpp	Kernel: Print a message to debug log after writing a perfcore file	2021-05-22 22:23:52 +02:00
Process.h	Kernel: Make sure we only log profiling events when m_profiling is true	2021-05-23 23:54:30 +01:00
ProcessGroup.cpp	Revert "Kernel: Avoid allocating under spinlock in ProcessGroup::find_or_create"	2021-05-21 12:36:20 +02:00
ProcessGroup.h	Revert "Kernel: Avoid allocating under spinlock in ProcessGroup::find_or_create"	2021-05-21 12:36:20 +02:00
Random.cpp	Kernel: Remove the now defunct LOCKER(..) macro.	2021-04-25 09:38:27 +02:00
Random.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
RTC.cpp	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
RTC.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Scheduler.cpp	Kernel: Validate we don't hold s_mm_lock during context switch	2021-05-25 10:35:41 +02:00
Scheduler.h	Kernel: Add support for profiling kmalloc()/kfree()	2021-05-19 22:51:42 +02:00
SpinLock.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
StdLib.cpp	Kernel: Enable building the kernel with -flto	2021-04-29 20:26:36 +02:00
StdLib.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
Syscall.cpp	Kernel: Enable building the kernel with -flto	2021-04-29 20:26:36 +02:00
Thread.cpp	Kernel: Close a Thread tid lookup race	2021-05-20 22:08:36 +02:00
Thread.h	Kernel: Remove an allocation when blocking a thread	2021-05-20 09:09:10 +02:00
ThreadBlockers.cpp	Kernel: Modify TimeManagement::current_time(..) API so it can't fail. (#6869)	2021-05-05 18:51:06 +02:00
ThreadTracer.cpp	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
ThreadTracer.h	Kernel: Make Process::start_tracing_from API OOM safe	2021-05-13 16:21:53 +02:00
TimerQueue.cpp	Kernel: Remove an allocation when blocking a thread	2021-05-20 09:09:10 +02:00
TimerQueue.h	Kernel: Remove an allocation when blocking a thread	2021-05-20 09:09:10 +02:00
UBSanitizer.cpp	Kernel: static vs non-static constexpr variables	2021-05-19 21:21:47 +01:00
UBSanitizer.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
UnixTypes.h	Kernel: Generate page fault events from the kernel profiler	2021-05-19 22:51:42 +02:00
UnveilNode.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
UserOrKernelBuffer.cpp	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
UserOrKernelBuffer.h	Kernel: Make UserOrKernelBuffer R/W helpers return KResultOr<size_t>	2021-05-13 23:28:40 +02:00
VirtualAddress.h	Everything: Move to SPDX license identifiers in all files.	2021-04-22 11:22:27 +02:00
WaitQueue.cpp	Everywhere: Use "the SerenityOS developers." in copyright headers	2021-04-29 00:59:26 +02:00
WaitQueue.h	Everywhere: Use "the SerenityOS developers." in copyright headers	2021-04-29 00:59:26 +02:00
WorkQueue.cpp	Kernel: Use plain Function objects for the WorkQueue	2021-05-19 21:36:57 +02:00
WorkQueue.h	Kernel: Use plain Function objects for the WorkQueue	2021-05-19 21:36:57 +02:00