fix(modern_bpf): solve an issue with 64-bit shift on s390x

Signed-off-by: Andrea Terzolo <[email protected]> Co-authored-by: Hendrik Brueckner <[email protected]>
falcosecurity · Aug 30, 2022 · 3f5c13b · 3f5c13b
1 parent 40399c8
commit 3f5c13b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/quotactl.bpf.c b/driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/quotactl.bpf.c
@@ -26,7 +26,7 @@ int BPF_PROG(quotactl_e,
 	/*=============================== COLLECT PARAMETERS  ===========================*/
 
 	/* Parameter 1: cmd (type: PT_FLAGS16) */
-	unsigned long cmd = extract__syscall_argument(regs, 0);
+	uint32_t cmd = (uint32_t)extract__syscall_argument(regs, 0);
 	u16 scap_cmd = quotactl_cmd_to_scap(cmd);
 	ringbuf__store_u16(&ringbuf, scap_cmd);
 
@@ -93,7 +93,7 @@ int BPF_PROG(quotactl_x,
 	unsigned long special_pointer = extract__syscall_argument(regs, 1);
 	auxmap__store_charbuf_param(auxmap, special_pointer, USER);
 
-	unsigned long cmd = extract__syscall_argument(regs, 0);
+	uint32_t cmd = (uint32_t)extract__syscall_argument(regs, 0);
 	u16 scap_cmd = quotactl_cmd_to_scap(cmd);
 
 	/* The `addr` argument is the address of an optional, command-