From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Yonghong Song <yhs@fb.com>,
Gilad Reti <gilad.reti@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
KP Singh <kpsingh@kernel.org>
Subject: [PATCH 5.10 09/43] bpf: Support PTR_TO_MEM{,_OR_NULL} register spilling
Date: Fri, 22 Jan 2021 15:12:25 +0100 [thread overview]
Message-ID: <20210122135736.032085194@linuxfoundation.org> (raw)
In-Reply-To: <20210122135735.652681690@linuxfoundation.org>
From: Gilad Reti <gilad.reti@gmail.com>
commit 744ea4e3885eccb6d332a06fae9eb7420a622c0f upstream.
Add support for pointer to mem register spilling, to allow the verifier
to track pointers to valid memory addresses. Such pointers are returned
for example by a successful call of the bpf_ringbuf_reserve helper.
The patch was partially contributed by CyberArk Software, Inc.
Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it")
Suggested-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Gilad Reti <gilad.reti@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20210113053810.13518-1-gilad.reti@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/bpf/verifier.c | 2 ++
1 file changed, 2 insertions(+)
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -2214,6 +2214,8 @@ static bool is_spillable_regtype(enum bp
case PTR_TO_RDWR_BUF:
case PTR_TO_RDWR_BUF_OR_NULL:
case PTR_TO_PERCPU_BTF_ID:
+ case PTR_TO_MEM:
+ case PTR_TO_MEM_OR_NULL:
return true;
default:
return false;
next prev parent reply other threads:[~2021-01-22 14:58 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 14:12 [PATCH 5.10 00/43] 5.10.10-rc1 review Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 01/43] Revert "kconfig: remove kvmconfig and xenconfig shorthands" Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 02/43] bpf: Fix selftest compilation on clang 11 Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 03/43] x86/hyperv: Initialize clockevents after LAPIC is initialized Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 04/43] drm/amdgpu/display: drop DCN support for aarch64 Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 05/43] bpf: Fix signed_{sub,add32}_overflows type handling Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 06/43] X.509: Fix crash caused by NULL pointer Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 07/43] nfsd4: readdirplus shouldnt return parent of export Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 08/43] bpf: Dont leak memory in bpf getsockopt when optlen == 0 Greg Kroah-Hartman
2021-01-22 14:12 ` Greg Kroah-Hartman [this message]
2021-01-22 14:12 ` [PATCH 5.10 10/43] bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 11/43] net: ipa: modem: add missing SET_NETDEV_DEV() for proper sysfs links Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 12/43] net: fix use-after-free when UDP GRO with shared fraglist Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 13/43] udp: Prevent reuseport_select_sock from reading uninitialized socks Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 14/43] netxen_nic: fix MSI/MSI-x interrupts Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 15/43] net: ipv6: Validate GSO SKB before finish IPv6 processing Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 16/43] tipc: fix NULL deref in tipc_link_xmit() Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 17/43] mlxsw: core: Add validation of transceiver temperature thresholds Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 18/43] mlxsw: core: Increase critical threshold for ASIC thermal zone Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 19/43] net: mvpp2: Remove Pause and Asym_Pause support Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 20/43] rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 21/43] esp: avoid unneeded kmap_atomic call Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 22/43] net: dcb: Validate netlink message in DCB handler Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 23/43] net: dcb: Accept RTM_GETDCB messages carrying set-like DCB commands Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 24/43] rxrpc: Call state should be read with READ_ONCE() under some circumstances Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 25/43] i40e: fix potential NULL pointer dereferencing Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 26/43] net: stmmac: Fixed mtu channged by cache aligned Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 27/43] net: sit: unregister_netdevice on newlinks error path Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 28/43] net: stmmac: fix taprio schedule configuration Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 29/43] net: stmmac: fix taprio configuration when base_time is in the past Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 30/43] net: avoid 32 x truesize under-estimation for tiny skbs Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 31/43] dt-bindings: net: renesas,etheravb: RZ/G2H needs tx-internal-delay-ps Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 32/43] net: phy: smsc: fix clk error handling Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 33/43] net: dsa: clear devlink port type before unregistering slave netdevs Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 34/43] rxrpc: Fix handling of an unsupported token type in rxrpc_read() Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 35/43] net: stmmac: use __napi_schedule() for PREEMPT_RT Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 36/43] can: mcp251xfd: mcp251xfd_handle_rxif_one(): fix wrong NULL pointer check Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 37/43] drm/panel: otm8009a: allow using non-continuous dsi clock Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 38/43] mac80211: do not drop tx nulldata packets on encrypted links Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 39/43] mac80211: check if atf has been disabled in __ieee80211_schedule_txq Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 40/43] net: dsa: unbind all switches from tree when DSA master unbinds Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 41/43] cxgb4/chtls: Fix tid stuck due to wrong update of qid Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 42/43] spi: fsl: Fix driver breakage when SPI_CS_HIGH is not set in spi->mode Greg Kroah-Hartman
2021-01-22 14:12 ` [PATCH 5.10 43/43] spi: cadence: cache reference clock rate during probe Greg Kroah-Hartman
2021-01-23 0:24 ` [PATCH 5.10 00/43] 5.10.10-rc1 review Shuah Khan
2021-01-23 15:06 ` Greg Kroah-Hartman
2021-01-23 5:44 ` Naresh Kamboju
2021-01-23 7:20 ` Naresh Kamboju
2021-01-23 15:06 ` Greg Kroah-Hartman
2021-01-23 9:52 ` Pavel Machek
2021-01-23 15:06 ` Greg Kroah-Hartman
2021-01-23 14:36 ` Guenter Roeck
2021-01-23 15:07 ` Greg Kroah-Hartman
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