From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Alexander Egorenkov <egorenar@linux.ibm.com>,
Julian Wiedmann <jwi@linux.ibm.com>,
Willem de Bruijn <willemb@google.com>,
Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH 5.11 012/104] net/af_iucv: remove WARN_ONCE on malformed RX packets
Date: Fri, 5 Mar 2021 13:20:17 +0100 [thread overview]
Message-ID: <20210305120903.784327098@linuxfoundation.org> (raw)
In-Reply-To: <20210305120903.166929741@linuxfoundation.org>
From: Alexander Egorenkov <egorenar@linux.ibm.com>
commit 27e9c1de529919d8dd7d072415d3bcae77709300 upstream.
syzbot reported the following finding:
AF_IUCV failed to receive skb, len=0
WARNING: CPU: 0 PID: 522 at net/iucv/af_iucv.c:2039 afiucv_hs_rcv+0x174/0x190 net/iucv/af_iucv.c:2039
CPU: 0 PID: 522 Comm: syz-executor091 Not tainted 5.10.0-rc1-syzkaller-07082-g55027a88ec9f #0
Hardware name: IBM 3906 M04 701 (KVM/Linux)
Call Trace:
[<00000000b87ea538>] afiucv_hs_rcv+0x178/0x190 net/iucv/af_iucv.c:2039
([<00000000b87ea534>] afiucv_hs_rcv+0x174/0x190 net/iucv/af_iucv.c:2039)
[<00000000b796533e>] __netif_receive_skb_one_core+0x13e/0x188 net/core/dev.c:5315
[<00000000b79653ce>] __netif_receive_skb+0x46/0x1c0 net/core/dev.c:5429
[<00000000b79655fe>] netif_receive_skb_internal+0xb6/0x220 net/core/dev.c:5534
[<00000000b796ac3a>] netif_receive_skb+0x42/0x318 net/core/dev.c:5593
[<00000000b6fd45f4>] tun_rx_batched.isra.0+0x6fc/0x860 drivers/net/tun.c:1485
[<00000000b6fddc4e>] tun_get_user+0x1c26/0x27f0 drivers/net/tun.c:1939
[<00000000b6fe0f00>] tun_chr_write_iter+0x158/0x248 drivers/net/tun.c:1968
[<00000000b4f22bfa>] call_write_iter include/linux/fs.h:1887 [inline]
[<00000000b4f22bfa>] new_sync_write+0x442/0x648 fs/read_write.c:518
[<00000000b4f238fe>] vfs_write.part.0+0x36e/0x5d8 fs/read_write.c:605
[<00000000b4f2984e>] vfs_write+0x10e/0x148 fs/read_write.c:615
[<00000000b4f29d0e>] ksys_write+0x166/0x290 fs/read_write.c:658
[<00000000b8dc4ab4>] system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
Last Breaking-Event-Address:
[<00000000b8dc64d4>] __s390_indirect_jump_r14+0x0/0xc
Malformed RX packets shouldn't generate any warnings because
debugging info already flows to dropmon via the kfree_skb().
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/iucv/af_iucv.c | 1 -
1 file changed, 1 deletion(-)
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -2036,7 +2036,6 @@ static int afiucv_hs_rcv(struct sk_buff
char nullstring[8];
if (!pskb_may_pull(skb, sizeof(*trans_hdr))) {
- WARN_ONCE(1, "AF_IUCV failed to receive skb, len=%u", skb->len);
kfree_skb(skb);
return NET_RX_SUCCESS;
}
next prev parent reply other threads:[~2021-03-05 12:24 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 12:20 [PATCH 5.11 000/104] 5.11.4-rc1 review Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 001/104] net: usb: qmi_wwan: support ZTE P685M modem Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 002/104] iwlwifi: add new cards for So and Qu family Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 003/104] x86/build: Treat R_386_PLT32 relocation as R_386_PC32 Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 004/104] JFS: more checks for invalid superblock Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 005/104] sched/core: Allow try_invoke_on_locked_down_task() with irqs disabled Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 006/104] udlfb: Fix memory leak in dlfb_usb_probe Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 007/104] media: mceusb: sanity check for prescaler value Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 008/104] erofs: fix shift-out-of-bounds of blkszbits Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 009/104] media: v4l2-ctrls.c: fix shift-out-of-bounds in std_validate Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 010/104] media: zr364xx: fix memory leaks in probe() Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 011/104] xfs: Fix assert failure in xfs_setattr_size() Greg Kroah-Hartman
2021-03-05 12:20 ` Greg Kroah-Hartman [this message]
2021-03-05 12:20 ` [PATCH 5.11 013/104] smackfs: restrict bytes count in smackfs write functions Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 014/104] tomoyo: ignore data race while checking quota Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 015/104] net: fix up truesize of cloned skb in skb_prepare_for_shift() Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 016/104] mptcp: fix spurious retransmissions Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 017/104] riscv: Get rid of MAX_EARLY_MAPPING_SIZE Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 018/104] nbd: handle device refs for DESTROY_ON_DISCONNECT properly Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 019/104] mm/hugetlb.c: fix unnecessary address expansion of pmd sharing Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 020/104] vfio/type1: Use follow_pte() Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 021/104] RDMA/rtrs: Do not signal for heatbeat Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 022/104] RDMA/rtrs-clt: Use bitmask to check sess->flags Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 023/104] RDMA/rtrs-srv: Do not signal REG_MR Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 024/104] tcp: fix tcp_rmem documentation Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 025/104] mptcp: do not wakeup listener for MPJ subflows Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 026/104] mptcp: fix DATA_FIN generation on early shutdown Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 027/104] net: bridge: use switchdev for port flags set through sysfs too Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 028/104] net/sched: cls_flower: Reject invalid ct_state flags rules Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 029/104] net: dsa: tag_rtl4_a: Support also egress tags Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 030/104] net: ag71xx: remove unnecessary MTU reservation Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 031/104] net: hsr: add support for EntryForgetTime Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 032/104] net: psample: Fix netlink skb length with tunnel info Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 033/104] net: fix dev_ifsioc_locked() race condition Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 034/104] dt-bindings: ethernet-controller: fix fixed-link specification Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 035/104] dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/ Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 036/104] ASoC: qcom: Remove useless debug print Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 037/104] ath10k: prevent deinitializing NAPI twice Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 038/104] EDAC/amd64: Do not load on family 0x15, model 0x13 Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 039/104] staging: fwserial: Fix error handling in fwserial_create Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 040/104] x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 041/104] can: flexcan: add CAN wakeup function for i.MX8QM Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 042/104] vt/consolemap: do font sum unsigned Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 043/104] wlcore: Fix command execute failure 19 for wl12xx Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 044/104] Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 045/104] Bluetooth: btusb: fix memory leak on suspend and resume Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 046/104] selftests/bpf: Remove memory leak Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 047/104] mt76: mt7915: reset token when mac_reset happens Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 048/104] mt76: mt7615: " Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 049/104] pktgen: fix misuse of BUG_ON() in pktgen_thread_worker() Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 050/104] ath10k: fix wmi mgmt tx queue full due to race condition Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 051/104] net: sfp: add mode quirk for GPON module Ubiquiti U-Fiber Instant Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 052/104] Bluetooth: Add new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 053/104] Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.11 054/104] staging: most: sound: add sanity check for function argument Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 055/104] staging: bcm2835-audio: Replace unsafe strcpy() with strscpy() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 056/104] net: ipa: avoid field overflow Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 057/104] brcmfmac: Add DMI nvram filename quirk for Predia Basic tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 058/104] brcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 059/104] wilc1000: Fix use of void pointer as a wrong struct type Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 060/104] drm/hisilicon: Fix use-after-free Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 061/104] crypto: tcrypt - avoid signed overflow in byte count Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 062/104] fs: make unlazy_walk() error handling consistent Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 063/104] drm/amdgpu: Add check to prevent IH overflow Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 064/104] PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 065/104] ASoC: Intel: bytcr_rt5640: Add new BYT_RT5640_NO_SPEAKERS quirk-flag Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 066/104] ALSA: usb-audio: Add support for Pioneer DJM-750 Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 067/104] drm/amd/display: Guard against NULL pointer deref when get_i2c_info fails Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 068/104] drm/amd/amdgpu: add error handling to amdgpu_virt_read_pf2vf_data Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 069/104] media: uvcvideo: Allow entities with no pads Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 070/104] f2fs: handle unallocated section and zone on pinned/atgc Greg Kroah-Hartman
2021-03-05 12:55 ` Pavel Machek
2021-03-05 12:21 ` [PATCH 5.11 071/104] f2fs: fix to set/clear I_LINKABLE under i_lock Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 072/104] nvme-core: add cancel tagset helpers Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 073/104] nvme-rdma: add clean action for failed reconnection Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 074/104] nvme-tcp: " Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 075/104] ALSA: usb-audio: Add DJM450 to Pioneer format quirk Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 076/104] ALSA: usb-audio: Add DJM-450 to the quirks table Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 077/104] ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 078/104] btrfs: fix error handling in commit_fs_roots Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 079/104] drm/amdgpu: enable only one high prio compute queue Greg Kroah-Hartman
2021-03-05 13:03 ` Christian König
2021-03-05 14:48 ` Deucher, Alexander
2021-03-05 15:18 ` Christian König
2021-03-05 15:27 ` Deucher, Alexander
2021-03-05 15:31 ` Sasha Levin
2021-03-05 15:35 ` Christian König
2021-03-05 15:40 ` Deucher, Alexander
2021-03-05 15:57 ` Nirmoy
2021-03-06 17:17 ` Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 080/104] perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[] Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 081/104] ASoC: Intel: sof-sdw: indent and add quirks consistently Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 082/104] ASoC: Intel: sof_sdw: detect DMIC number based on mach params Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 083/104] parisc: Bump 64-bit IRQ stack size to 64 KB Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 084/104] sched/features: Fix hrtick reprogramming Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 085/104] ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID 7316R tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 086/104] ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 087/104] ASoC: Intel: bytcr_rt5651: Add quirk for the Jumper EZpad 7 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 088/104] ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 089/104] scsi: iscsi: Restrict sessions and handles to admin capabilities Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 090/104] scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 091/104] scsi: iscsi: Verify lengths on passthrough PDUs Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 092/104] Xen/gnttab: handle p2m update errors on a per-slot basis Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 093/104] xen-netback: respect gnttab_map_refs()s return value Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 094/104] xen: fix p2m size in dom0 for disabled memory hotplug case Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 095/104] swap: fix swapfile read/write offset Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 096/104] tty: fix up iterate_tty_read() EOVERFLOW handling Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 097/104] tty: fix up hung_up_tty_read() conversion Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 098/104] tty: clean up legacy leftovers from n_tty line discipline Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 099/104] tty: teach n_tty line discipline about the new "cookie continuations" Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 100/104] tty: teach the n_tty ICANON case about the new "cookie continuations" too Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 101/104] phy: mediatek: Add missing MODULE_DEVICE_TABLE() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 102/104] ALSA: hda/realtek: Add quirk for Clevo NH55RZQ Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 103/104] ALSA: hda/realtek: Add quirk for Intel NUC 10 Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.11 104/104] ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board Greg Kroah-Hartman
2021-03-06 16:39 ` [PATCH 5.11 000/104] 5.11.4-rc1 review Guenter Roeck
2021-03-07 11:37 ` Greg Kroah-Hartman
2021-03-07 2:16 ` Naresh Kamboju
2021-03-07 11:37 ` Greg Kroah-Hartman
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