diff options
Diffstat (limited to 'results/scraper/launchpad-without-comments/1840865')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1840865 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1840865 b/results/scraper/launchpad-without-comments/1840865 new file mode 100644 index 00000000..3952df63 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1840865 @@ -0,0 +1,35 @@ +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*. \ No newline at end of file |