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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1768.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/1768.toml | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1768.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1768.toml new file mode 100644 index 00000000..231aa639 --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_missing/1768.toml @@ -0,0 +1,40 @@ +id = 1768 +title = "Could not allocate more than ~2GB with qemu-user" +state = "closed" +created_at = "2023-07-18T12:15:24.069Z" +closed_at = "2023-07-25T17:27:25.780Z" +labels = [] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1768" +host-os = "Slackware GNU/Linux" +host-arch = "x86_64" +qemu-version = "8.0.50 (git commit hash 4633c1e2c576fbabfe5c8c93f4b842504b69c096)" +guest-os = "GNU/Linux user-space" +guest-arch = "arm, hppa, i386, or1k, ppc, sparc" +description = """On qemu-user, failed to allocate more than about 2GB on 32bit platform supporting up to 4GB (arm, ppc, etc.)""" +reproduce = """1. Try to allocate more than 2GB [e.g. for(i=0;i<64;i++) if(malloc(64*1024*1024)==NULL) perror("Failed to allocate 64MB");] +2. Only 1 64MB chunck is allocated in the upper 2GB memory space +3. Failed to allocate after about 2GB.""" +additional = """The problem is in **pageflags_find** and **pageflags_next** functions (found in _accel/tcg/user-exec.c_) 3rd parameters, that should be **target_ulong** instead of incorrect _target_long_ (the parameter will be converted signed extended to uint64_t). +The testing program is the following: +``` +#include <stdio.h> +#include <stdlib.h> + +int main(int argc,char *argv[]) { + unsigned int a; + unsigned int i; + char *al; + unsigned int sss=1U*1024*1024*64; + for(a=0;a<128;a++) { + al=malloc(sss); + if(al!=NULL) { + printf("ALLOC OK %u (%08lX)!\\n",sss*(a+1),al); + } + else { + printf("Cannot alloc %d\\n",(a+1)*sss); + perror("Cannot alloc"); + exit(1); + } + } +} +```""" |