diff options
| author | Benjamin Berg <benjamin@sipsolutions.net> | 2023-11-10 12:03:44 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2024-01-04 23:51:47 +0100 |
| commit | 6d64095ea8698e3cb1698ec4e81acb2aa1500322 (patch) | |
| tree | 479ffa5675ba64b53858096fee8f506d6810748b /arch/um | |
| parent | um: Reap winch thread if it fails (diff) | |
| download | linux-6d64095ea8698e3cb1698ec4e81acb2aa1500322.tar.xz linux-6d64095ea8698e3cb1698ec4e81acb2aa1500322.zip | |
um: Do not use printk in userspace trampoline
The trampoline is running in a cloned process. It is not safe to use
printk for error printing there.
Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index ed20cefb2963..1f5c3f2523d1 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -221,8 +221,8 @@ static int userspace_tramp(void *stack) addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE, PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset); if (addr == MAP_FAILED) { - printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, errno = %d\n", - STUB_CODE, errno); + os_info("mapping mmap stub at 0x%lx failed, errno = %d\n", + STUB_CODE, errno); exit(1); } @@ -231,8 +231,8 @@ static int userspace_tramp(void *stack) STUB_DATA_PAGES * UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, fd, offset); if (addr == MAP_FAILED) { - printk(UM_KERN_ERR "mapping segfault stack at 0x%lx failed, errno = %d\n", - STUB_DATA, errno); + os_info("mapping segfault stack at 0x%lx failed, errno = %d\n", + STUB_DATA, errno); exit(1); } @@ -242,8 +242,8 @@ static int userspace_tramp(void *stack) sa.sa_sigaction = (void *) segv_handler; sa.sa_restorer = NULL; if (sigaction(SIGSEGV, &sa, NULL) < 0) { - printk(UM_KERN_ERR "%s - setting SIGSEGV handler failed - errno = %d\n", - __func__, errno); + os_info("%s - setting SIGSEGV handler failed - errno = %d\n", + __func__, errno); exit(1); } |