multiple KDLs, leading to corrupt partition

[mmadia]

hrevr1alpha4-44589

When building bezilla on hrevr1alpha4-44589, HAIKU will reliably and consistenly KDL. Upon the next boot, the partition being written to during the KDL will become corrupt and only mountable as RO. Note, hrev43937 was the last revision I used to build BeZillaBrowser (see hrev43952).

(initial kdl)

PANIC: no space in log after sync (1424 for 2043 blocks)!
Welcome to Kernel Debugging Land...
Thread 14908 "nsinstall" running on CPU 0
stack trace for thread 14908 "nsinstall"
    kernel stack: 0xcd536000 to 0xcd53a000
      user stack: 0x7efef000 to 0x7ffef000
frame               caller     <image>:function + offset
 0 cd539af8 (+  32) 80124efa   <kernel_x86>:arch_debug_stack_trace + 0x0012
 1 cd539b18 (+  16) 80091d87   <kernel_x86> stack_trace_trampoline(NULL) + 0x000b
 2 cd539b28 (+  12) 8012a366   <kernel_x86>:arch_debug_call_with_fault_handler + 0x001b
 3 cd539b34 (+  48) 80093816   <kernel_x86>:debug_call_with_fault_handler + 0x005e
 4 cd539b64 (+  64) 80091fa7   <kernel_x86> kernel_debugger_loop(0x8016ed57 "PANIC: ", 0x815364a0 "no space in log after sync (%ld for %ld blocks)!", 0xcd539c10 "", int32: 0) + 0x021b
 5 cd539ba4 (+  48) 8009230b   <kernel_x86> kernel_debugger_internal(0x8016ed57 "PANIC: ", 0x815364a0 "no space in log after sync (%ld for %ld blocks)!", 0xcd539c10 "", int32: 0) + 0x0053
 6 cd539bd4 (+  48) 80093b90   <kernel_x86>:panic + 0x0024
 7 cd539c04 (+ 224) 81527154   <bfs> Journal<0xd602f250>::_WriteTransactionToLog(0xebc6386e) + 0x0324
 8 cd539ce4 (+  48) 81527be5   <bfs> Journal<0xd602f250>::_TransactionDone(true) + 0x00d5
 9 cd539d14 (+  48) 81527a12   <bfs> Journal<0xd602f250>::Unlock(Transaction*: 0xcd539d94, true) + 0x004e
10 cd539d44 (+  96) 8152ef04   <bfs> bfs_create_symlink(fs_volume*: 0xd02b8798, fs_vnode*: 0xdfbaa420, 0xcd539de4 "nsIInterfaceRequestor.idl", 0xdf50a570 "/use-the-source/bezilla/mozilla/xpcom/base/nsIInterfaceRequestor.idl", int32: 0) + 0x02e0
11 cd539da4 (+ 320) 800e0643   <kernel_x86> common_create_symlink(int32: -1, 0xdf505070 "/generated", 0xdf50a570 "/use-the-source/bezilla/mozilla/xpcom/base/nsIInterfaceRequestor.idl", int32: 0, false) + 0x0073
12 cd539ee4 (+  96) 800e5adc   <kernel_x86>:_user_create_symlink + 0x010c
13 cd539f44 (+ 100) 8012b5d0   <kernel_x86>:handle_syscall + 0x00cd
user iframe at 0xcd539fa8 (end = 0xcd53a000)
 eax 0x73           ebx 0x2d2f14        ecx 0x7ffecdc0   edx 0xffff0114
 esi 0x7ffef6aa     edi 0x44            ebp 0x7ffecdec   esp 0xcd539fdc
 eip 0xffff0114  eflags 0x3216     user esp 0x7ffecdc0
 vector: 0x63, error code: 0x0
14 cd539fa8 (+   0) ffff0114   <commpage>:commpage_syscall + 0x0004
15 7ffecdec (+8592) 0020259b   <nsinstall>:main + 0x0b97
16 7ffeef7c (+  48) 0020120f   <nsinstall>:_start + 0x005b
17 7ffeefac (+  48) 00106236   </boot/system/runtime_loader@0x00100000>:unknown + 0x6236
18 7ffeefdc (+   0) 7ffeefec   719937:nsinstall_14908_stack@0x7efef000 + 0xffffec
kdebug>

this happened when i unmounted /generated, after exiting KDL:

bfs: inode at 0 requested!
bfs: check: Could not open inode at 0
PANIC: cache destroy: still has partial slabs
Welcome to Kernel Debugging Land...
Thread 113 "mount_server" running on CPU 0
stack trace for thread 113 "mount_server"
    kernel stack: 0x81a1e000 to 0x81a22000
      user stack: 0x7efef000 to 0x7ffef000
frame               caller     <image>:function + offset
 0 81a21c48 (+  32) 80124efa   <kernel_x86>:arch_debug_stack_trace + 0x0012
 1 81a21c68 (+  16) 80091d87   <kernel_x86> stack_trace_trampoline(NULL) + 0x000b
 2 81a21c78 (+  12) 8012a366   <kernel_x86>:arch_debug_call_with_fault_handler + 0x001b
 3 81a21c84 (+  48) 80093816   <kernel_x86>:debug_call_with_fault_handler + 0x005e
 4 81a21cb4 (+  64) 80091fa7   <kernel_x86> kernel_debugger_loop(0x8016ed57 "PANIC: ", 0x80182b40 "cache destroy: still has partial slabs", 0x81a21d60 "", int32: 0) + 0x021b
 5 81a21cf4 (+  48) 8009230b   <kernel_x86> kernel_debugger_internal(0x8016ed57 "PANIC: ", 0x80182b40 "cache destroy: still has partial slabs", 0x81a21d60 "", int32: 0) + 0x0053
 6 81a21d24 (+  48) 80093b90   <kernel_x86>:panic + 0x0024
 7 81a21d54 (+  48) 800fd034   <kernel_x86> delete_object_cache_internal(ObjectCache*: 0xd62e6bc8) + 0x0064
 8 81a21d84 (+  64) 800fe177   <kernel_x86>:delete_object_cache + 0x026b
 9 81a21dc4 (+  64) 8004676f   <kernel_x86>:_._11block_cache + 0x0043
10 81a21e04 (+  48) 8004a9ce   <kernel_x86>:block_cache_delete + 0x015e
11 81a21e34 (+  64) 8152bbeb   <bfs> Volume<0x8221b700>::Unmount(0x0) + 0x00eb
12 81a21e74 (+  48) 8152cf3c   <bfs> bfs_unmount(fs_volume*: 0xd02b8798) + 0x0024
13 81a21ea4 (+  96) 800e2f48   <kernel_x86> fs_unmount(0xd0030a48 "/generated", int32: -1, uint32: 0x0 (0), false) + 0x0578
14 81a21f04 (+  64) 800e4b32   <kernel_x86>:_user_unmount + 0x007a
15 81a21f44 (+ 100) 8012b5d0   <kernel_x86>:handle_syscall + 0x00cd
user iframe at 0x81a21fa8 (end = 0x81a22000)
 eax 0x5f           ebx 0x615f14        ecx 0x7ffee740   edx 0xffff0114
 esi 0x7ffee7f0     edi 0x1803de68      ebp 0x7ffee76c   esp 0x81a21fdc
 eip 0xffff0114  eflags 0x3203     user esp 0x7ffee740
 vector: 0x63, error code: 0x0
16 81a21fa8 (+   0) ffff0114   <commpage>:commpage_syscall + 0x0004
17 7ffee76c (+ 160) 00439ceb   <libbe.so> BPartition<0x1803de68>::Unmount(uint32: 0x0 (0)) + 0x0087
18 7ffee80c (+  80) 00206299   <_APP_> AutoMounter<0x7ffeedb8>::_UnmountAndEjectVolume(BPartition*: 0x1803de68, BPath&: 0x7ffee8f0, 0x7ffee90c "generated") + 0x0085
19 7ffee85c (+ 496) 00206745   <_APP_> AutoMounter<0x7ffeedb8>::_UnmountAndEjectVolume(BMessage*: 0x1801b0e0) + 0x0251
20 7ffeea4c (+ 144) 00204f39   <_APP_> AutoMounter<0x7ffeedb8>::MessageReceived(BMessage*: 0x1801b0e0) + 0x0151
21 7ffeeadc (+  48) 002f67a3   <libbe.so> BLooper<0x7ffeedb8>::DispatchMessage(BMessage*: 0x1801b0e0, BHandler*: 0x7ffeedb8) + 0x005b
22 7ffeeb0c (+ 496) 002ed1dd   <libbe.so> BApplication<0x7ffeedb8>::DispatchMessage(BMessage*: 0x1801b0e0, BHandler*: 0x7ffeedb8) + 0x0405
23 7ffeecfc (+  64) 002f8111   <libbe.so> BLooper<0x7ffeedb8>::task_looper(0x7ffeedb8) + 0x0211
24 7ffeed3c (+  64) 002ebc3d   <libbe.so> BApplication<0x7ffeedb8>::Run(0x1) + 0x0075
25 7ffeed7c (+ 512) 0020731f   <_APP_>:main + 0x002f
26 7ffeef7c (+  48) 002049cb   <_APP_>:_start + 0x005b
27 7ffeefac (+  48) 00106236   </boot/system/runtime_loader@0x00100000>:unknown + 0x6236
28 7ffeefdc (+   0) 7ffeefec   4089:mount_server_113_stack@0x7efef000 + 0xffffec
kdebug> this happened when i unmounted /generated.
Unknown command "this". Enter "help" to get a list of all supported commands.
kdebug> exit