sys/linux: disable SYSLOG_ACTION_CLEAR

For context see:
https://groups.google.com/d/msg/syzkaller/8nUJCnMfark/y8HOM_vrCQAJ

7 files changed, 16 insertions, 13 deletions

diff --git a/sys/linux/gen/386.go b/sys/linux/gen/386.go
index 2dbf08714..705f90112 100644
--- a/sys/linux/gen/386.go
+++ b/sys/linux/gen/386.go
@@ -39221,7 +39221,7 @@ var syscalls_386 = []*Syscall{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "info", TypeSize: 4}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 	}},
 	{NR: 103, Name: "syslog", CallName: "syslog", Args: []Type{
-		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 4}}, Vals: []uint64{0, 1, 2, 3, 4, 5, 9, 10}},
+		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 4}}, Vals: []uint64{0, 1, 2, 3, 4, 9, 10}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "buf", TypeSize: 4, IsOptional: true}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 4}}, Buf: "buf"},
 	}},
@@ -47816,4 +47816,4 @@ var consts_386 = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_386 = "72273f6f16e80a8a90e864e2816e286cdd89a4b1"
+const revision_386 = "641fa484dddc5cba544715ffdc90383c136b95ae"
diff --git a/sys/linux/gen/amd64.go b/sys/linux/gen/amd64.go
index cadc8c817..3b455943a 100644
--- a/sys/linux/gen/amd64.go
+++ b/sys/linux/gen/amd64.go
@@ -39741,7 +39741,7 @@ var syscalls_amd64 = []*Syscall{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "info", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 	}},
 	{NR: 103, Name: "syslog", CallName: "syslog", Args: []Type{
-		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 5, 9, 10}},
+		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 9, 10}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "buf", TypeSize: 8, IsOptional: true}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
 	}},
@@ -48351,4 +48351,4 @@ var consts_amd64 = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_amd64 = "e2ace21303f7bc2a5b8faae08d0cf9ab50ccc8a9"
+const revision_amd64 = "6eb98f08ff8a010f389802043050ee3fe4a79a3a"
diff --git a/sys/linux/gen/arm.go b/sys/linux/gen/arm.go
index fef455bbb..eecbf2c6f 100644
--- a/sys/linux/gen/arm.go
+++ b/sys/linux/gen/arm.go
@@ -38877,7 +38877,7 @@ var syscalls_arm = []*Syscall{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "info", TypeSize: 4}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 	}},
 	{NR: 103, Name: "syslog", CallName: "syslog", Args: []Type{
-		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 4}}, Vals: []uint64{0, 1, 2, 3, 4, 5, 9, 10}},
+		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 4}}, Vals: []uint64{0, 1, 2, 3, 4, 9, 10}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "buf", TypeSize: 4, IsOptional: true}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 4}}, Buf: "buf"},
 	}},
@@ -47393,4 +47393,4 @@ var consts_arm = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_arm = "884b94f59270cfa98684e7b9cbf06a7ee5cf0954"
+const revision_arm = "99e5f44bbc0f75339093994a7bc9f9f7e12afe15"
diff --git a/sys/linux/gen/arm64.go b/sys/linux/gen/arm64.go
index 9f8b581f0..9c66dd1c0 100644
--- a/sys/linux/gen/arm64.go
+++ b/sys/linux/gen/arm64.go
@@ -39217,7 +39217,7 @@ var syscalls_arm64 = []*Syscall{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "info", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 	}},
 	{NR: 116, Name: "syslog", CallName: "syslog", Args: []Type{
-		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 5, 9, 10}},
+		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 9, 10}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "buf", TypeSize: 8, IsOptional: true}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
 	}},
@@ -47701,4 +47701,4 @@ var consts_arm64 = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_arm64 = "7cb46bb7746b32334da4dcd9d09245de99c0d74f"
+const revision_arm64 = "8c55da5bbee8aa5d9bad299cf76cbfd5693dd1a3"
diff --git a/sys/linux/gen/ppc64le.go b/sys/linux/gen/ppc64le.go
index b51fdc8ac..82b7d0339 100644
--- a/sys/linux/gen/ppc64le.go
+++ b/sys/linux/gen/ppc64le.go
@@ -39164,7 +39164,7 @@ var syscalls_ppc64le = []*Syscall{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "info", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 	}},
 	{NR: 103, Name: "syslog", CallName: "syslog", Args: []Type{
-		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 5, 9, 10}},
+		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "syslog_cmd", FldName: "cmd", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 9, 10}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "buffer", FldName: "buf", TypeSize: 8, IsOptional: true}, Type: &BufferType{TypeCommon: TypeCommon{ArgDir: 1, IsVarlen: true}}},
 		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
 	}},
@@ -47638,4 +47638,4 @@ var consts_ppc64le = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_ppc64le = "6e9b0467d0548b0e4442ac175065f4eb970b9794"
+const revision_ppc64le = "9e01bebd3a51deca1e757e88f0d6ccb97f64e500"
diff --git a/sys/linux/init.go b/sys/linux/init.go
index 348c31f32..0d4533686 100644
--- a/sys/linux/init.go
+++ b/sys/linux/init.go
@@ -20,6 +20,7 @@ func InitTarget(target *prog.Target) {
 		SYSLOG_ACTION_CONSOLE_OFF:   target.GetConst("SYSLOG_ACTION_CONSOLE_OFF"),
 		SYSLOG_ACTION_CONSOLE_ON:    target.GetConst("SYSLOG_ACTION_CONSOLE_ON"),
 		SYSLOG_ACTION_CONSOLE_LEVEL: target.GetConst("SYSLOG_ACTION_CONSOLE_LEVEL"),
+		SYSLOG_ACTION_CLEAR:         target.GetConst("SYSLOG_ACTION_CLEAR"),
 		SYSLOG_ACTION_SIZE_UNREAD:   target.GetConst("SYSLOG_ACTION_SIZE_UNREAD"),
 		FIFREEZE:                    target.GetConst("FIFREEZE"),
 		FITHAW:                      target.GetConst("FITHAW"),
@@ -112,6 +113,7 @@ type arch struct {
 	SYSLOG_ACTION_CONSOLE_OFF   uint64
 	SYSLOG_ACTION_CONSOLE_ON    uint64
 	SYSLOG_ACTION_CONSOLE_LEVEL uint64
+	SYSLOG_ACTION_CLEAR         uint64
 	SYSLOG_ACTION_SIZE_UNREAD   uint64
 	FIFREEZE                    uint64
 	FITHAW                      uint64
@@ -151,7 +153,8 @@ func (arch *arch) sanitizeCall(c *prog.Call) {
 		// These disable console output, but we need it.
 		if cmd.Val == arch.SYSLOG_ACTION_CONSOLE_OFF ||
 			cmd.Val == arch.SYSLOG_ACTION_CONSOLE_ON ||
-			cmd.Val == arch.SYSLOG_ACTION_CONSOLE_LEVEL {
+			cmd.Val == arch.SYSLOG_ACTION_CONSOLE_LEVEL ||
+			cmd.Val == arch.SYSLOG_ACTION_CLEAR {
 			cmd.Val = arch.SYSLOG_ACTION_SIZE_UNREAD
 		}
 	case "ioctl":
diff --git a/sys/linux/sys.txt b/sys/linux/sys.txt
index 93bf11496..83dcee7fc 100644
--- a/sys/linux/sys.txt
+++ b/sys/linux/sys.txt
@@ -886,7 +886,7 @@ kcmp_flags = KCMP_FILE, KCMP_FILES, KCMP_FS, KCMP_IO, KCMP_SIGHAND, KCMP_SYSVSEM
 rusage_who = RUSAGE_SELF, RUSAGE_CHILDREN, RUSAGE_THREAD
 rlimit_type = RLIMIT_AS, RLIMIT_CORE, RLIMIT_CPU, RLIMIT_DATA, RLIMIT_FSIZE, RLIMIT_LOCKS, RLIMIT_MEMLOCK, RLIMIT_MSGQUEUE, RLIMIT_NICE, RLIMIT_NOFILE, RLIMIT_NPROC, RLIMIT_RSS, RLIMIT_RTPRIO, RLIMIT_RTTIME, RLIMIT_SIGPENDING, RLIMIT_STACK
 # The ones that disable console output are intentionally omitted.
-syslog_cmd = SYSLOG_ACTION_CLOSE, SYSLOG_ACTION_OPEN, SYSLOG_ACTION_READ, SYSLOG_ACTION_READ_ALL, SYSLOG_ACTION_READ_CLEAR, SYSLOG_ACTION_CLEAR, SYSLOG_ACTION_SIZE_UNREAD, SYSLOG_ACTION_SIZE_BUFFER
+syslog_cmd = SYSLOG_ACTION_CLOSE, SYSLOG_ACTION_OPEN, SYSLOG_ACTION_READ, SYSLOG_ACTION_READ_ALL, SYSLOG_ACTION_READ_CLEAR, SYSLOG_ACTION_SIZE_UNREAD, SYSLOG_ACTION_SIZE_BUFFER
 ioprio_which_pid = IOPRIO_WHO_PROCESS, IOPRIO_WHO_PGRP
 ioprio_which_uid = IOPRIO_WHO_USER
 personality_flags = PER_LINUX, PER_SVR4, PER_SVR3, PER_OSR5, PER_WYSEV386, PER_ISCR4, PER_BSD, PER_XENIX, PER_LINUX32, PER_IRIX32, PER_IRIXN32, PER_IRIX64, PER_RISCOS, PER_SOLARIS, PER_UW7, PER_OSF4, PER_HPUX, ADDR_NO_RANDOMIZE, MMAP_PAGE_ZERO, ADDR_COMPAT_LAYOUT, READ_IMPLIES_EXEC, ADDR_LIMIT_32BIT, SHORT_INODE, WHOLE_SECONDS, STICKY_TIMEOUTS, ADDR_LIMIT_3GB
@@ -937,7 +937,7 @@ _ = STA_PLL, STA_PPSFREQ, STA_PPSTIME, STA_FLL, STA_INS, STA_DEL, STA_UNSYNC, ST
 _ = ADJ_OFFSET, ADJ_FREQUENCY, ADJ_MAXERROR, ADJ_ESTERROR, ADJ_STATUS, ADJ_TIMECONST, ADJ_TAI, ADJ_SETOFFSET, ADJ_MICRO, ADJ_NANO, ADJ_TICK, ADJ_OFFSET_SINGLESHOT
 
 # misc
-_ = KCOV_INIT_TRACE, KCOV_ENABLE, KCOV_DISABLE, KCOV_TRACE_PC, KCOV_TRACE_CMP, FIFREEZE, PTRACE_TRACEME, SYSLOG_ACTION_CONSOLE_ON, SYSLOG_ACTION_CONSOLE_OFF, SYSLOG_ACTION_CONSOLE_LEVEL, __NR_mmap2
+_ = KCOV_INIT_TRACE, KCOV_ENABLE, KCOV_DISABLE, KCOV_TRACE_PC, KCOV_TRACE_CMP, FIFREEZE, PTRACE_TRACEME, SYSLOG_ACTION_CONSOLE_ON, SYSLOG_ACTION_CONSOLE_OFF, SYSLOG_ACTION_CONSOLE_LEVEL, SYSLOG_ACTION_CLEAR, __NR_mmap2
 
 # Hardcode KCOV_REMOTE_ENABLE value for amd64 until new kcov patches reach mainline.
 define KCOV_REMOTE_ENABLE	1075340134