On 8/29/23 12:25, Orion Poplawski wrote:

I'm seeing x2gokdrive abort with "malloc(): unsorted double linked list corrupted", which indicates some memory corruption. Is anyone else seeing this? Has anyone tried running x2gokdrive under valgrind? Any tips for doing that?

So, this doesn't have good debuginfo it seems for some reason, but perhaps points in the right direction? Perhaps multiple threads mucking with the dirty screen regions?

==750746== Thread 3: ==750746== Invalid read of size 1 ==750746== at 0x15C056: getDirtyScreenRegion (in /usr/bin/x2gokdrive) ==750746== by 0x15F8A7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== Address 0xac892b0 is 0 bytes inside a block of size 16,000 free'd ==750746== at 0x4C3AA93: free (vg_replace_malloc.c:872) ==750746== by 0x15B722: remote_screen_init (in /usr/bin/x2gokdrive) ==750746== by 0x162D16: ephyrMapFramebuffer (in /usr/bin/x2gokdrive) ==750746== by 0x163745: ephyrRandRSetConfig (in /usr/bin/x2gokdrive) ==750746== by 0x1646B2: ephyrResizeScreen (in /usr/bin/x2gokdrive) ==750746== by 0x15DE54: remote_process_client_event (in /usr/bin/x2gokdrive) ==750746== by 0x15E3F6: clientReadNotify (in /usr/bin/x2gokdrive) ==750746== by 0x2A8000: ospoll_wait (in /usr/bin/x2gokdrive) ==750746== by 0x2A1472: WaitForSomething (in /usr/bin/x2gokdrive) ==750746== by 0x1A081A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== Block was alloc'd at ==750746== at 0x4C38135: malloc (vg_replace_malloc.c:381) ==750746== by 0x15B910: remote_screen_init (in /usr/bin/x2gokdrive) ==750746== by 0x162D16: ephyrMapFramebuffer (in /usr/bin/x2gokdrive) ==750746== by 0x163745: ephyrRandRSetConfig (in /usr/bin/x2gokdrive) ==750746== by 0x1646B2: ephyrResizeScreen (in /usr/bin/x2gokdrive) ==750746== by 0x15DE54: remote_process_client_event (in /usr/bin/x2gokdrive) ==750746== by 0x15E3F6: clientReadNotify (in /usr/bin/x2gokdrive) ==750746== by 0x2A8000: ospoll_wait (in /usr/bin/x2gokdrive) ==750746== by 0x2A1472: WaitForSomething (in /usr/bin/x2gokdrive) ==750746== by 0x1A081A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Invalid read of size 1 ==750746== at 0x15C076: getDirtyScreenRegion (in /usr/bin/x2gokdrive) ==750746== by 0x15F8A7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== Address 0xac892b8 is 8 bytes inside a block of size 16,000 free'd ==750746== at 0x4C3AA93: free (vg_replace_malloc.c:872) ==750746== by 0x15B722: remote_screen_init (in /usr/bin/x2gokdrive) ==750746== by 0x162D16: ephyrMapFramebuffer (in /usr/bin/x2gokdrive) ==750746== by 0x163745: ephyrRandRSetConfig (in /usr/bin/x2gokdrive) ==750746== by 0x1646B2: ephyrResizeScreen (in /usr/bin/x2gokdrive) ==750746== by 0x15DE54: remote_process_client_event (in /usr/bin/x2gokdrive) ==750746== by 0x15E3F6: clientReadNotify (in /usr/bin/x2gokdrive) ==750746== by 0x2A8000: ospoll_wait (in /usr/bin/x2gokdrive) ==750746== by 0x2A1472: WaitForSomething (in /usr/bin/x2gokdrive) ==750746== by 0x1A081A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== Block was alloc'd at ==750746== at 0x4C38135: malloc (vg_replace_malloc.c:381) ==750746== by 0x15B910: remote_screen_init (in /usr/bin/x2gokdrive) ==750746== by 0x162D16: ephyrMapFramebuffer (in /usr/bin/x2gokdrive) ==750746== by 0x163745: ephyrRandRSetConfig (in /usr/bin/x2gokdrive) ==750746== by 0x1646B2: ephyrResizeScreen (in /usr/bin/x2gokdrive) ==750746== by 0x15DE54: remote_process_client_event (in /usr/bin/x2gokdrive) ==750746== by 0x15E3F6: clientReadNotify (in /usr/bin/x2gokdrive) ==750746== by 0x2A8000: ospoll_wait (in /usr/bin/x2gokdrive) ==750746== by 0x2A1472: WaitForSomething (in /usr/bin/x2gokdrive) ==750746== by 0x1A081A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Thread 1: ==750746== Syscall param writev(vector[...]) points to uninitialised byte(s) ==750746== at 0x86F4B8F: writev (in /usr/lib64/libc-2.28.so) ==750746== by 0x2AB3ED: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x2A691C: FlushClient (in /usr/bin/x2gokdrive) ==750746== by 0x2A6F0A: WriteToClient (in /usr/bin/x2gokdrive) ==750746== by 0x22ADF0: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x22C5E2: GlxDispatchRequest (in /usr/bin/x2gokdrive) ==750746== by 0x1A0A9A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== Address 0x1ffefff961 is on thread 1's stack ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x29DDB7: compClipNotify (in /usr/bin/x2gokdrive) ==750746== by 0x24DC49: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x1D50DA: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x1D5606: miValidateTree (in /usr/bin/x2gokdrive) ==750746== by 0x18ACC9: MapWindow (in /usr/bin/x2gokdrive) ==750746== by 0x29DA33: compCreateOverlayWindow (in /usr/bin/x2gokdrive) ==750746== by 0x29C17F: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x1A0A9A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x29DDB7: compClipNotify (in /usr/bin/x2gokdrive) ==750746== by 0x24DC49: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x1D58EA: miValidateTree (in /usr/bin/x2gokdrive) ==750746== by 0x18B0AC: MapSubwindows (in /usr/bin/x2gokdrive) ==750746== by 0x19A9AF: ProcMapSubwindows (in /usr/bin/x2gokdrive) ==750746== by 0x1A0A9A: Dispatch (in /usr/bin/x2gokdrive) ==750746== by 0x168925: dix_main (in /usr/bin/x2gokdrive) ==750746== by 0x8609D84: (below main) (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Thread 3: ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15C07C: getDirtyScreenRegion (in /usr/bin/x2gokdrive) ==750746== by 0x15F8A7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15C081: getDirtyScreenRegion (in /usr/bin/x2gokdrive) ==750746== by 0x15F8A7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Use of uninitialised value of size 8 ==750746== at 0x15C063: getDirtyScreenRegion (in /usr/bin/x2gokdrive) ==750746== by 0x15F8A7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15F8AB: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EBF7: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Use of uninitialised value of size 8 ==750746== at 0x15EC64: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EA38: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EB8E: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x4C380DF: malloc (vg_replace_malloc.c:381) ==750746== by 0x15EA63: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Warning: set address range perms: large range [0x59ea9040, 0x159ea6ac0) (undefined) ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EA6A: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EA82: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Use of uninitialised value of size 8 ==750746== at 0x15EAC0: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EAD1: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Conditional jump or move depends on uninitialised value(s) ==750746== at 0x15EADF: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Use of uninitialised value of size 8 ==750746== at 0x15EAC4: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== ==750746== Invalid read of size 2 ==750746== at 0x15EAC0: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so) ==750746== Address 0x2198a130 is not stack'd, malloc'd or (recently) free'd ==750746== ==750746== ==750746== Process terminating with default action of signal 6 (SIGABRT): dumping core ==750746== at 0x861DACF: raise (in /usr/lib64/libc-2.28.so) ==750746== by 0x85F0EA4: abort (in /usr/lib64/libc-2.28.so) ==750746== by 0x2AA2DF: OsAbort (in /usr/bin/x2gokdrive) ==750746== by 0x2AE738: AbortServer (in /usr/bin/x2gokdrive) ==750746== by 0x2AF5AC: FatalError (in /usr/bin/x2gokdrive) ==750746== by 0x2A7614: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83C1CEF: ??? (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x15EABF: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x15EC90: send_dirty_region (in /usr/bin/x2gokdrive) ==750746== by 0x15F8B7: ??? (in /usr/bin/x2gokdrive) ==750746== by 0x83B71C9: start_thread (in /usr/lib64/libpthread-2.28.so) ==750746== by 0x8608E72: clone (in /usr/lib64/libc-2.28.so)

-- Orion Poplawski IT Systems Manager 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion@nwra.com Boulder, CO 80301 https://www.nwra.com/