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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 14:51:13 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 14:51:13 +0000 |
| commit | 225caa38269323af1bfc2daadff5ec8bd930747f (patch) | |
| tree | e0a5fefde9ee100ba6f32fb36de6707490e4164e /mailinglist/output_launchpad/1840865 | |
| parent | 904141bfb8d5385b75eb3b7afec1dcda89af65a7 (diff) | |
| download | emulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.tar.gz emulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.zip | |
add mailinglist scraper results
Diffstat (limited to 'mailinglist/output_launchpad/1840865')
| -rw-r--r-- | mailinglist/output_launchpad/1840865 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/mailinglist/output_launchpad/1840865 b/mailinglist/output_launchpad/1840865 new file mode 100644 index 00000000..65c49cc4 --- /dev/null +++ b/mailinglist/output_launchpad/1840865 @@ -0,0 +1,44 @@ +qemu crashes when doing iotest on virtio-9p filesystem + +Qemu crashes when doing avocado-vt test on virtio-9p filesystem. +This bug can be reproduced running https://github.com/autotest/tp-qemu/blob/master/qemu/tests/9p.py. +The crash stack goes like: + +Program terminated with signal SIGSEGV, Segmentation fault. +#0 v9fs_mark_fids_unreclaim (pdu=pdu@entry=0xaaab00046868, path=path@entry=0xffff851e2fa8) + at hw/9pfs/9p.c:505 +#1 0x0000aaaae3585acc in v9fs_unlinkat (opaque=0xaaab00046868) at hw/9pfs/9p.c:2590 +#2 0x0000aaaae3811c10 in coroutine_trampoline (i0=<optimized out>, i1=<optimized out>) + at util/coroutine-ucontext.c:116 +#3 0x0000ffffa13ddb20 in ?? () from /lib64/libc.so.6 +Backtrace stopped: not enough registers or memory available to unwind further + +A segment fault is triggered at hw/9pfs/9p.c line 505 + + for (fidp = s->fid_list; fidp; fidp = fidp->next) { + if (fidp->path.size != path->size) { # fidp is invalid + continue; + } + +(gdb) p path +$10 = (V9fsPath *) 0xffff851e2fa8 +(gdb) p *path +$11 = {size = 21, data = 0xaaaafed6f420 "./9p_test/p2a1/d0/f1"} +(gdb) p *fidp +Cannot access memory at address 0x101010101010101 +(gdb) p *pdu +$12 = {size = 19, tag = 54, id = 76 'L', cancelled = 0 '\000', complete = {entries = { + sqh_first = 0x0, sqh_last = 0xaaab00046870}}, s = 0xaaab000454b8, next = { + le_next = 0xaaab000467c0, le_prev = 0xaaab00046f88}, idx = 88} +(gdb) + +Address Sanitizer shows error and saying that there is a heap-use-after-free on *fidp*. + + +This is an automated cleanup. This bug report has been moved to QEMU's +new bug tracker on gitlab.com and thus gets marked as 'expired' now. +Please continue with the discussion here: + + https://gitlab.com/qemu-project/qemu/-/issues/181 + + |
