lambda-os/lambda-kern
1
0
Fork 0
Code Issues 13 Pull requests Projects Releases Packages Wiki Activity Actions

Crash when running ls twice #9

New issue
Open
opened 2025-12-03 09:57:14 -06:00 by pfarley · 0 comments
pfarley commented 2025-12-03 09:57:14 -06:00
Owner
Copy link

(Second ls is overwritten by pagefault exception)

[00000.000] [MISC] Kernel occupies this memory space: c010300e - c01276c0
[00000.000] [MISC]   -> GDT
[00000.000] [MISC] Configuring Interrupts
[00000.000] [MISC]   -> IDT
[00000.000] [MISC]       -> Setting exception vectors
[00000.000] [MISC]       -> Setting interrupt vectors
[00000.000] [MISC]       -> Disabling IRQs
[00000.000] [MISC]       -> Loading IDT
[00000.000] [MISC]       -> Remapping IRQ's
[00000.000] [MISC] Initializing memory management
[00000.000] [MISC]   -> Paging
[00000.000] [  MM]   -> Clearing page directory
[00000.000] [  MM]   -> Filling first page tables
[00000.000] [  MM]   -> Setting page directory
[00000.000] [  MM]   -> Enabling paging
[00000.000] [  MM]   -> Initializing allocation system
[00000.000] [  MM]       -> 0013F000 -> 03EC1938 (03D82938)
[00000.000] [MISC] Memory management enabled
[00000.000] [MISC]   -> STI
[00000.000] [MISC] ---------------------------------------
[00000.000] [MISC] Kernel version: 0.1.0-7303f7de*
[00000.000] [MISC] Compiled by:    GCC 14.2.0
[00000.000] [MISC] Built on:       Mar 17 2025 at 21:18:11
[00000.000] [MISC] ---------------------------------------
[00000.000] [MISC] Timer initialized
[00000.000] [PROC] Initializing multitasking
[00000.000] [PROC] sched_idle_init(): Setting up idle threads for 1 CPUs
[00000.000] [PROC] Multitasking enabled
[00000.000] [MISC] iloop()
[00000.020] [MISC] Main kernel task started
[00000.020] [MISC] Starting kernel input thread
[00000.020] [ MOD] Attempting to load module `/modules/fs.devfs.mod`
[00000.020] [ MOD] Could not access module `/modules/fs.devfs.mod`
[00000.020] [MISC] Loading init executable (/bin/linit)
[00000.020] [MISC] Creating STDIO streams
[00000.020] [MISC] Creating task
linit v0.0.1, built Mar 17 2025

#####
#######
    ####
     ####
     #####
    ### ###
   ###   ###
  ###     ###
 ###       ###
###         ###

Welcome to Lambda OS!

lshell v0.0.1, built Mar 17 2025

lshell> ls
-rwxr-xr-x 0 0 .
-rwxr-xr-x 0 0 .
-rwxr-xr-x 2 0 etc
-rwxr-xr-x 7 0 bin
[00002.520] [MISC] EXCEPTION OCCURED: Page Fault
[00002.520] [MISC] Page fault at 0x53F0010B --> 0x00000000 (non-present, read, kernel-mode)
[00002.520] [MISC]   -> EIP: C010D241 CS: 08 EFLAGS: 00010006
[00002.520] [MISC]   -> ESP: 00181FE8 DS: 181D74
[00002.520] [MISC]   -> EAX: 53F000FF EBX: 00181CF8 ECX: 00200000 EDX: 00000003
[00002.520] [MISC]   -> ESP: 00223ED8 EBP: 00223F10 EDI: 00181F4C ESI: 00181DA0
[00002.520] [MISC]   -> Page flags:  0x000
[00002.520] [MISC]   -> Table flags: 0x000
[00002.520] [MISC]   -> Page Directory: 0x001FF000
[00002.520] [MISC]   -> Kernel pagedir: 0x00121000
[00002.520] [MISC]   -> Caused by process 5 [/bin/lshell]
[00002.520] [MISC]       -> Thread 5 [/bin/lshell]
[00002.520] [MISC]       -> Entrypoint: 40000000
Stack Trace:
  [c010d241] <0x8000417c +1074827461> __x86.get_pc_thunk.di
  [c010d45e] <0x8000417c +1074828002> __x86.get_pc_thunk.di
  [c010e452] <0x8000417c +1074832086> __x86.get_pc_thunk.di
  [c0106801] <0x8000417c +1074800261> __x86.get_pc_thunk.di
  [c01057df] <0x8000417c +1074796131> __x86.get_pc_thunk.di
  [c01118a6] <0x8000417c +1074845482> __x86.get_pc_thunk.di
Stack Trace:
  [c010d241] <0x8000417c +1074827461> __x86.get_pc_thunk.di
[00002.520] [MISC] Stack contents:
<  223EC8(-4)>: [00181CF8] [00000003] [00200000] [53F000FF]
<  223ED8( 0)>: [00000000] [C010D241] [00000008] [00010006]
<  223EE8( 4)>: [00181FE8] [00181D74] [00000000] [001FEE70]
[00002.520] [MISC] Killing task

linit: login exited!

Breakpoint 1, handle_exception (exception=14 '\016', regs=..., errcode=0, iregs=...) at kernel/arch/x86/src/intr/cexceptions.c:196
196	void handle_exception(uint8_t exception, x86_pusha_regs_t regs, uint32_t errcode, x86_iret_regs_t iregs) {
(gdb) bt f
#0  handle_exception (exception=14 '\016', regs=..., errcode=0, iregs=...) at kernel/arch/x86/src/intr/cexceptions.c:196
        curr_proc = <optimized out>
#1  0xc0110c44 in exception_isr_14 ()
No symbol table info available.
#2  0x0000000e in ?? ()
No symbol table info available.
#3  0xc010d4ce in fork_clone_process (child=0x181cf8, parent=0x181b90) at kernel/src/proc/fork.c:142
        cthread = 0x181f4c
        pthread = 0x1fee70
#4  0xc010d605 in fork () at kernel/src/proc/fork.c:176
        thread = 0x1fee70
        proc = 0x181b90
        child = 0x181cf8
        cthread = 0x181f4c
#5  0xc010e602 in syscall_service (scn=21, args=0x7f000e4c) at kernel/src/proc/syscalls.c:77
        curr_thread = 0x1fee70
        func = 0xc010d510 <fork>
#6  0xc0106801 in arch_syscall_interrupt (hdlr=0xc0119a00 <_syscall_int_hdlr>) at kernel/arch/x86/src/proc/syscall.c:19
        curr_thread = 0x1fee70
        scn = <optimized out>
        args = <optimized out>
#7  0xc01057df in idt_handle_interrupt (int_n=255 '\377', pregs=..., iregs=...) at kernel/arch/x86/src/intr/idt.c:75
        i = 4
#8  0xc0111a56 in int_handler_255 ()
(Second `ls` is overwritten by pagefault exception) ``` [00000.000] [MISC] Kernel occupies this memory space: c010300e - c01276c0 [00000.000] [MISC] -> GDT [00000.000] [MISC] Configuring Interrupts [00000.000] [MISC] -> IDT [00000.000] [MISC] -> Setting exception vectors [00000.000] [MISC] -> Setting interrupt vectors [00000.000] [MISC] -> Disabling IRQs [00000.000] [MISC] -> Loading IDT [00000.000] [MISC] -> Remapping IRQ's [00000.000] [MISC] Initializing memory management [00000.000] [MISC] -> Paging [00000.000] [ MM] -> Clearing page directory [00000.000] [ MM] -> Filling first page tables [00000.000] [ MM] -> Setting page directory [00000.000] [ MM] -> Enabling paging [00000.000] [ MM] -> Initializing allocation system [00000.000] [ MM] -> 0013F000 -> 03EC1938 (03D82938) [00000.000] [MISC] Memory management enabled [00000.000] [MISC] -> STI [00000.000] [MISC] --------------------------------------- [00000.000] [MISC] Kernel version: 0.1.0-7303f7de* [00000.000] [MISC] Compiled by: GCC 14.2.0 [00000.000] [MISC] Built on: Mar 17 2025 at 21:18:11 [00000.000] [MISC] --------------------------------------- [00000.000] [MISC] Timer initialized [00000.000] [PROC] Initializing multitasking [00000.000] [PROC] sched_idle_init(): Setting up idle threads for 1 CPUs [00000.000] [PROC] Multitasking enabled [00000.000] [MISC] iloop() [00000.020] [MISC] Main kernel task started [00000.020] [MISC] Starting kernel input thread [00000.020] [ MOD] Attempting to load module `/modules/fs.devfs.mod` [00000.020] [ MOD] Could not access module `/modules/fs.devfs.mod` [00000.020] [MISC] Loading init executable (/bin/linit) [00000.020] [MISC] Creating STDIO streams [00000.020] [MISC] Creating task linit v0.0.1, built Mar 17 2025 ##### ####### #### #### ##### ### ### ### ### ### ### ### ### ### ### Welcome to Lambda OS! lshell v0.0.1, built Mar 17 2025 lshell> ls -rwxr-xr-x 0 0 . -rwxr-xr-x 0 0 . -rwxr-xr-x 2 0 etc -rwxr-xr-x 7 0 bin [00002.520] [MISC] EXCEPTION OCCURED: Page Fault [00002.520] [MISC] Page fault at 0x53F0010B --> 0x00000000 (non-present, read, kernel-mode) [00002.520] [MISC] -> EIP: C010D241 CS: 08 EFLAGS: 00010006 [00002.520] [MISC] -> ESP: 00181FE8 DS: 181D74 [00002.520] [MISC] -> EAX: 53F000FF EBX: 00181CF8 ECX: 00200000 EDX: 00000003 [00002.520] [MISC] -> ESP: 00223ED8 EBP: 00223F10 EDI: 00181F4C ESI: 00181DA0 [00002.520] [MISC] -> Page flags: 0x000 [00002.520] [MISC] -> Table flags: 0x000 [00002.520] [MISC] -> Page Directory: 0x001FF000 [00002.520] [MISC] -> Kernel pagedir: 0x00121000 [00002.520] [MISC] -> Caused by process 5 [/bin/lshell] [00002.520] [MISC] -> Thread 5 [/bin/lshell] [00002.520] [MISC] -> Entrypoint: 40000000 Stack Trace: [c010d241] <0x8000417c +1074827461> __x86.get_pc_thunk.di [c010d45e] <0x8000417c +1074828002> __x86.get_pc_thunk.di [c010e452] <0x8000417c +1074832086> __x86.get_pc_thunk.di [c0106801] <0x8000417c +1074800261> __x86.get_pc_thunk.di [c01057df] <0x8000417c +1074796131> __x86.get_pc_thunk.di [c01118a6] <0x8000417c +1074845482> __x86.get_pc_thunk.di Stack Trace: [c010d241] <0x8000417c +1074827461> __x86.get_pc_thunk.di [00002.520] [MISC] Stack contents: < 223EC8(-4)>: [00181CF8] [00000003] [00200000] [53F000FF] < 223ED8( 0)>: [00000000] [C010D241] [00000008] [00010006] < 223EE8( 4)>: [00181FE8] [00181D74] [00000000] [001FEE70] [00002.520] [MISC] Killing task linit: login exited! ``` ``` Breakpoint 1, handle_exception (exception=14 '\016', regs=..., errcode=0, iregs=...) at kernel/arch/x86/src/intr/cexceptions.c:196 196 void handle_exception(uint8_t exception, x86_pusha_regs_t regs, uint32_t errcode, x86_iret_regs_t iregs) { (gdb) bt f #0 handle_exception (exception=14 '\016', regs=..., errcode=0, iregs=...) at kernel/arch/x86/src/intr/cexceptions.c:196 curr_proc = <optimized out> #1 0xc0110c44 in exception_isr_14 () No symbol table info available. #2 0x0000000e in ?? () No symbol table info available. #3 0xc010d4ce in fork_clone_process (child=0x181cf8, parent=0x181b90) at kernel/src/proc/fork.c:142 cthread = 0x181f4c pthread = 0x1fee70 #4 0xc010d605 in fork () at kernel/src/proc/fork.c:176 thread = 0x1fee70 proc = 0x181b90 child = 0x181cf8 cthread = 0x181f4c #5 0xc010e602 in syscall_service (scn=21, args=0x7f000e4c) at kernel/src/proc/syscalls.c:77 curr_thread = 0x1fee70 func = 0xc010d510 <fork> #6 0xc0106801 in arch_syscall_interrupt (hdlr=0xc0119a00 <_syscall_int_hdlr>) at kernel/arch/x86/src/proc/syscall.c:19 curr_thread = 0x1fee70 scn = <optimized out> args = <optimized out> #7 0xc01057df in idt_handle_interrupt (int_n=255 '\377', pregs=..., iregs=...) at kernel/arch/x86/src/intr/idt.c:75 i = 4 #8 0xc0111a56 in int_handler_255 () ```
pfarley added this to the Lambda OS project 2025-12-03 09:57:14 -06:00
Sign in to join this conversation.
No Branch/Tag specified
Branches Tags
develop
compressed-initrd
x86/apic
kconfig
x86/higher-half
feature/rpi-support
master
feature/multithreading
k210-support
armv7-support
arch-abstraction
dev/fork_execve
tasking
restructure/filesystem
kterm/stdio
syscalls/filesystem
restructure/ipc
feature/stacktrace
exec-testing
gh-pages
No results found.
Labels
Clear labels
  
Kind/Bug

Something is not working

  
Kind/Documentation

Documentation changes

  
Kind/Enhancement

Improve existing functionality

  
Kind/Feature

New functionality

  
Kind/Security

This is security issue

  
Kind/Testing

Issue or pull request related to testing

  
Migrated

Migrated from Github

  
Priority
Critical
The priority is critical

  
Priority
High
The priority is high

  
Priority
Low
The priority is low

  
Priority
Medium
The priority is medium

  
Reviewed
Confirmed
Issue has been confirmed

  
Reviewed
Duplicate
This issue or pull request already exists

  
Reviewed
Invalid
Invalid issue

  
Reviewed
Won't Fix
This issue won't be fixed

  
Status
Abandoned
Somebody has started to work on this but abandoned work

  
Status
Blocked
Something is blocking this issue or pull request

  
Status
Need More Info
Feedback is required to reproduce issue or to continue work

No labels
Kind/Bug
Kind/Documentation
Kind/Enhancement
Kind/Feature
Kind/Security
Kind/Testing
Migrated
Priority
Critical
Priority
High
Priority
Low
Priority
Medium
Reviewed
Confirmed
Reviewed
Duplicate
Reviewed
Invalid
Reviewed
Won't Fix
Status
Abandoned
Status
Blocked
Status
Need More Info
Milestone
Clear milestone
No items
No milestone
Projects
Clear projects
No items
No project
Lambda OS
Assignees
Clear assignees
No assignees
1 participant
Notifications
Due date
The due date is invalid or out of range. Please use the format "yyyy-mm-dd".

No due date set.

Dependencies

No dependencies set.

Reference
lambda-os/lambda-kern#9
No description provided.