diff options
| author |   Florin Coras <fcoras@cisco.com> | 2021-02-02 15:40:35 -0800 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-02-04 15:10:01 +0000 |
| commit | b4d9c5dedb2209a021449d80ce3cbc9044072d84 (patch) | |
| tree | 5fa1452f37bbfdc04de978b47c5952c70f740b7c /src/vppinfra/linux | |
| parent | 34c6c309d5ff7acfe470dac3f974271917e7b19e (diff) | |
vppinfra: fix mem map mt issue due to snprintf
Type: fix
Apparently snprintf is not thread safe!?
Thread 6 "vpp_wk_3" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffeed1a3700 (LWP 819375)]
0x00007ffff58fc2b4 in __GI__IO_default_xsputn (n=<optimized out>,
data=<optimized out>, f=<optimized out>) at genops.c:394
394 genops.c: No such file or directory.
(gdb) bt
0 0x00007ffff58fc2b4 in __GI__IO_default_xsputn (n=<optimized out>,
data=<optimized out>, f=<optimized out>) at genops.c:394
1 __GI__IO_default_xsputn (f=0x7ffeec35e050, data=<optimized out>,
n=9) at genops.c:370
2 0x00007ffff58e127c in __vfprintf_internal (s=s@entry=0x7ffeec35e050,
format=format@entry=0x7ffff5f833ce "%s",
ap=ap@entry=0x7ffeec35e1d0, mode_flags=mode_flags@entry=2) at
../libio/libioP.h:948
3 0x00007ffff58f611a in __vsnprintf_internal (string=0x7ffed57ed018
"", maxlen=<optimized out>, format=0x7ffff5f833ce "%s",
args=args@entry=0x7ffeec35e1d0, mode_flags=2) at vsnprintf.c:114
4 0x00007ffff5997fd1 in ___snprintf_chk (s=<optimized out>,
maxlen=<optimized out>, flag=<optimized out>, slen=<optimized out>,
format=<optimized out>) at snprintf_chk.c:38
5 0x00007ffff5f7fd74 in clib_mem_vm_map_internal (base=<optimized
out>, log2_page_sz=<optimized out>, size=<optimized out>,
fd=<optimized out>, offset=<optimized out>, name=0x0) at
/scratch/fcoras/vpp/src/vppinfra/linux/mem.c:502
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I8ff7cfed422273dbdc55068772e11f5e550a9b60
Diffstat (limited to 'src/vppinfra/linux')
| -rw-r--r-- | src/vppinfra/linux/mem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vppinfra/linux/mem.c b/src/vppinfra/linux/mem.c index 121bf9473f0..15c5735d841 100644 --- a/src/vppinfra/linux/mem.c +++ b/src/vppinfra/linux/mem.c @@ -491,6 +491,7 @@ clib_mem_vm_map_internal (void *base, clib_mem_page_sz_t log2_page_sz, CLIB_MEM_UNPOISON (hdr, sys_page_sz); hdr->next = 0; hdr->prev = mm->last_map; + snprintf (hdr->name, CLIB_VM_MAP_HDR_NAME_MAX_LEN - 1, "%s", (char *) name); mm->last_map = hdr; map_unlock (); @@ -499,7 +500,6 @@ clib_mem_vm_map_internal (void *base, clib_mem_page_sz_t log2_page_sz, hdr->log2_page_sz = log2_page_sz; hdr->num_pages = size >> log2_page_sz; hdr->fd = fd; - snprintf (hdr->name, CLIB_VM_MAP_HDR_NAME_MAX_LEN - 1, "%s", (char *) name); hdr->name[CLIB_VM_MAP_HDR_NAME_MAX_LEN - 1] = 0; mprotect (hdr, sys_page_sz, PROT_NONE); |