From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Mahesh Bandewar <maheshb@google.com>,
syzbot <syzkaller@googlegroups.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.19 07/89] ipvlan: add cond_resched_rcu() while processing muticast backlog
Date: Tue, 17 Mar 2020 11:54:16 +0100 [thread overview]
Message-ID: <20200317103300.696905106@linuxfoundation.org> (raw)
In-Reply-To: <20200317103259.744774526@linuxfoundation.org>
From: Mahesh Bandewar <maheshb@google.com>
[ Upstream commit e18b353f102e371580f3f01dd47567a25acc3c1d ]
If there are substantial number of slaves created as simulated by
Syzbot, the backlog processing could take much longer and result
into the issue found in the Syzbot report.
INFO: rcu_sched detected stalls on CPUs/tasks:
(detected by 1, t=10502 jiffies, g=5049, c=5048, q=752)
All QSes seen, last rcu_sched kthread activity 10502 (4294965563-4294955061), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.1 R running task on cpu 1 10984 11210 3866 0x30020008 179034491270
Call Trace:
<IRQ>
[<ffffffff81497163>] _sched_show_task kernel/sched/core.c:8063 [inline]
[<ffffffff81497163>] _sched_show_task.cold+0x2fd/0x392 kernel/sched/core.c:8030
[<ffffffff8146a91b>] sched_show_task+0xb/0x10 kernel/sched/core.c:8073
[<ffffffff815c931b>] print_other_cpu_stall kernel/rcu/tree.c:1577 [inline]
[<ffffffff815c931b>] check_cpu_stall kernel/rcu/tree.c:1695 [inline]
[<ffffffff815c931b>] __rcu_pending kernel/rcu/tree.c:3478 [inline]
[<ffffffff815c931b>] rcu_pending kernel/rcu/tree.c:3540 [inline]
[<ffffffff815c931b>] rcu_check_callbacks.cold+0xbb4/0xc29 kernel/rcu/tree.c:2876
[<ffffffff815e3962>] update_process_times+0x32/0x80 kernel/time/timer.c:1635
[<ffffffff816164f0>] tick_sched_handle+0xa0/0x180 kernel/time/tick-sched.c:161
[<ffffffff81616ae4>] tick_sched_timer+0x44/0x130 kernel/time/tick-sched.c:1193
[<ffffffff815e75f7>] __run_hrtimer kernel/time/hrtimer.c:1393 [inline]
[<ffffffff815e75f7>] __hrtimer_run_queues+0x307/0xd90 kernel/time/hrtimer.c:1455
[<ffffffff815e90ea>] hrtimer_interrupt+0x2ea/0x730 kernel/time/hrtimer.c:1513
[<ffffffff844050f4>] local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1031 [inline]
[<ffffffff844050f4>] smp_apic_timer_interrupt+0x144/0x5e0 arch/x86/kernel/apic/apic.c:1056
[<ffffffff84401cbe>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:778
RIP: 0010:do_raw_read_lock+0x22/0x80 kernel/locking/spinlock_debug.c:153
RSP: 0018:ffff8801dad07ab8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff12
RAX: 0000000000000000 RBX: ffff8801c4135680 RCX: 0000000000000000
RDX: 1ffff10038826afe RSI: ffff88019d816bb8 RDI: ffff8801c41357f0
RBP: ffff8801dad07ac0 R08: 0000000000004b15 R09: 0000000000310273
R10: ffff88019d816bb8 R11: 0000000000000001 R12: ffff8801c41357e8
R13: 0000000000000000 R14: ffff8801cfb19850 R15: ffff8801cfb198b0
[<ffffffff8101460e>] __raw_read_lock_bh include/linux/rwlock_api_smp.h:177 [inline]
[<ffffffff8101460e>] _raw_read_lock_bh+0x3e/0x50 kernel/locking/spinlock.c:240
[<ffffffff840d78ca>] ipv6_chk_mcast_addr+0x11a/0x6f0 net/ipv6/mcast.c:1006
[<ffffffff84023439>] ip6_mc_input+0x319/0x8e0 net/ipv6/ip6_input.c:482
[<ffffffff840211c8>] dst_input include/net/dst.h:449 [inline]
[<ffffffff840211c8>] ip6_rcv_finish+0x408/0x610 net/ipv6/ip6_input.c:78
[<ffffffff840214de>] NF_HOOK include/linux/netfilter.h:292 [inline]
[<ffffffff840214de>] NF_HOOK include/linux/netfilter.h:286 [inline]
[<ffffffff840214de>] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:278
[<ffffffff83a29efa>] __netif_receive_skb_one_core+0x12a/0x1f0 net/core/dev.c:5303
[<ffffffff83a2a15c>] __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:5417
[<ffffffff83a2f536>] process_backlog+0x216/0x6c0 net/core/dev.c:6243
[<ffffffff83a30d1b>] napi_poll net/core/dev.c:6680 [inline]
[<ffffffff83a30d1b>] net_rx_action+0x47b/0xfb0 net/core/dev.c:6748
[<ffffffff846002c8>] __do_softirq+0x2c8/0x99a kernel/softirq.c:317
[<ffffffff813e656a>] invoke_softirq kernel/softirq.c:399 [inline]
[<ffffffff813e656a>] irq_exit+0x16a/0x1a0 kernel/softirq.c:439
[<ffffffff84405115>] exiting_irq arch/x86/include/asm/apic.h:561 [inline]
[<ffffffff84405115>] smp_apic_timer_interrupt+0x165/0x5e0 arch/x86/kernel/apic/apic.c:1058
[<ffffffff84401cbe>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:778
</IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:102
RSP: 0018:ffff880196033bd8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
RAX: ffff88019d8161c0 RBX: 00000000ffffffff RCX: ffffc90003501000
RDX: 0000000000000002 RSI: ffffffff816236d1 RDI: 0000000000000005
RBP: ffff880196033bd8 R08: ffff88019d8161c0 R09: 0000000000000000
R10: 1ffff10032c067f0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000000
[<ffffffff816236d1>] do_futex+0x151/0x1d50 kernel/futex.c:3548
[<ffffffff816260f0>] C_SYSC_futex kernel/futex_compat.c:201 [inline]
[<ffffffff816260f0>] compat_SyS_futex+0x270/0x3b0 kernel/futex_compat.c:175
[<ffffffff8101da17>] do_syscall_32_irqs_on arch/x86/entry/common.c:353 [inline]
[<ffffffff8101da17>] do_fast_syscall_32+0x357/0xe1c arch/x86/entry/common.c:415
[<ffffffff84401a9b>] entry_SYSENTER_compat+0x8b/0x9d arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f23c69
RSP: 002b:00000000f5d1f12c EFLAGS: 00000282 ORIG_RAX: 00000000000000f0
RAX: ffffffffffffffda RBX: 000000000816af88 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000816af8c
RBP: 00000000f5d1f228 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_sched kthread starved for 10502 jiffies! g5049 c5048 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task on cpu 1 13048 8 2 0x90000000 179099587640
Call Trace:
[<ffffffff8147321f>] context_switch+0x60f/0xa60 kernel/sched/core.c:3209
[<ffffffff8100095a>] __schedule+0x5aa/0x1da0 kernel/sched/core.c:3934
[<ffffffff810021df>] schedule+0x8f/0x1b0 kernel/sched/core.c:4011
[<ffffffff8101116d>] schedule_timeout+0x50d/0xee0 kernel/time/timer.c:1803
[<ffffffff815c13f1>] rcu_gp_kthread+0xda1/0x3b50 kernel/rcu/tree.c:2327
[<ffffffff8144b318>] kthread+0x348/0x420 kernel/kthread.c:246
[<ffffffff84400266>] ret_from_fork+0x56/0x70 arch/x86/entry/entry_64.S:393
Fixes: ba35f8588f47 (“ipvlan: Defer multicast / broadcast processing to a work-queue”)
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ipvlan/ipvlan_core.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -282,6 +282,7 @@ void ipvlan_process_multicast(struct wor
}
ipvlan_count_rx(ipvlan, len, ret == NET_RX_SUCCESS, true);
local_bh_enable();
+ cond_resched_rcu();
}
rcu_read_unlock();
next prev parent reply other threads:[~2020-03-17 10:57 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-17 10:54 [PATCH 4.19 00/89] 4.19.111-rc1 review Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 01/89] phy: Revert toggling reset changes Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 02/89] net: phy: Avoid multiple suspends Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 03/89] cgroup, netclassid: periodically release file_lock on classid updating Greg Kroah-Hartman
2020-03-18 9:02 ` Pavel Machek
2020-03-18 10:01 ` Konstantin Khlebnikov
2020-03-17 10:54 ` [PATCH 4.19 04/89] gre: fix uninit-value in __iptunnel_pull_header Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 05/89] inet_diag: return classid for all socket types Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 06/89] ipv6/addrconf: call ipv6_mc_up() for non-Ethernet interface Greg Kroah-Hartman
2020-03-17 10:54 ` Greg Kroah-Hartman [this message]
2020-03-17 10:54 ` [PATCH 4.19 08/89] ipvlan: do not add hardware address of master to its unicast filter list Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 09/89] ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast() Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 10/89] ipvlan: dont deref eth hdr before checking its set Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 11/89] net/ipv6: use configured metric when add peer route Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 12/89] netlink: Use netlink header as base to calculate bad attribute offset Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 13/89] net: macsec: update SCI upon MAC address change Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 14/89] net: nfc: fix bounds checking bugs on "pipe" Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 15/89] net/packet: tpacket_rcv: do not increment ring index on drop Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 16/89] net: stmmac: dwmac1000: Disable ACS if enhanced descs are not used Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 17/89] net: systemport: fix index check to avoid an array out of bounds access Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 18/89] r8152: check disconnect status after long sleep Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 19/89] sfc: detach from cb_page in efx_copy_channel() Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 20/89] bnxt_en: reinitialize IRQs when MTU is modified Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 21/89] cgroup: memcg: net: do not associate sock with unrelated cgroup Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 22/89] net: memcg: late association of sock to memcg Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 23/89] net: memcg: fix lockdep splat in inet_csk_accept() Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 24/89] devlink: validate length of param values Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 25/89] fib: add missing attribute validation for tun_id Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 26/89] nl802154: add missing attribute validation Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 27/89] nl802154: add missing attribute validation for dev_type Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 28/89] can: add missing attribute validation for termination Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 29/89] macsec: add missing attribute validation for port Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 30/89] net: fq: add missing attribute validation for orphan mask Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 31/89] team: add missing attribute validation for port ifindex Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 32/89] team: add missing attribute validation for array index Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 33/89] nfc: add missing attribute validation for SE API Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 34/89] nfc: add missing attribute validation for deactivate target Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 35/89] nfc: add missing attribute validation for vendor subcommand Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 36/89] net: phy: fix MDIO bus PM PHY resuming Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 37/89] selftests/net/fib_tests: update addr_metric_test for peer route testing Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 38/89] net/ipv6: need update peer route when modify metric Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 39/89] net/ipv6: remove the old peer route if change it to a new one Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 40/89] tipc: add missing attribute validation for MTU property Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 41/89] devlink: validate length of region addr/len Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 42/89] bonding/alb: make sure arp header is pulled before accessing it Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 43/89] slip: make slhc_compress() more robust against malicious packets Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 44/89] net: fec: validate the new settings in fec_enet_set_coalesce() Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 45/89] macvlan: add cond_resched() during multicast processing Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 46/89] cgroup: cgroup_procs_next should increase position index Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 47/89] cgroup: Iterate tasks that did not finish do_exit() Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 48/89] iwlwifi: mvm: Do not require PHY_SKU NVM section for 3168 devices Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 49/89] virtio-blk: fix hw_queue stopped on arbitrary error Greg Kroah-Hartman
2020-03-17 10:54 ` [PATCH 4.19 50/89] iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 51/89] netfilter: nf_conntrack: ct_cpu_seq_next should increase position index Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 52/89] netfilter: synproxy: synproxy_cpu_seq_next " Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 53/89] netfilter: xt_recent: recent_seq_next " Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 54/89] netfilter: x_tables: xt_mttg_seq_next " Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 55/89] workqueue: dont use wq_select_unbound_cpu() for bound works Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 56/89] drm/amd/display: remove duplicated assignment to grph_obj_type Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 57/89] ktest: Add timeout for ssh sync testing Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 58/89] cifs_atomic_open(): fix double-put on late allocation failure Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 59/89] gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 60/89] KVM: x86: clear stale x86_emulate_ctxt->intercept value Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 61/89] ARC: define __ALIGN_STR and __ALIGN symbols for ARC Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 62/89] macintosh: windfarm: fix MODINFO regression Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 63/89] efi: Fix a race and a buffer overflow while reading efivars via sysfs Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 64/89] efi: Make efi_rts_work accessible to efi page fault handler Greg Kroah-Hartman
2020-03-19 9:42 ` Chris Wilson
2020-03-19 10:04 ` Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 65/89] mt76: fix array overflow on receiving too many fragments for a packet Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 66/89] x86/mce: Fix logic and comments around MSR_PPIN_CTL Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 67/89] iommu/dma: Fix MSI reservation allocation Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 68/89] iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 69/89] iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 70/89] batman-adv: Dont schedule OGM for disabled interface Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 71/89] pinctrl: meson-gxl: fix GPIOX sdio pins Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 72/89] pinctrl: core: Remove extra kref_get which blocks hogs being freed Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 73/89] drm/i915/gvt: Fix unnecessary schedule timer when no vGPU exits Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 74/89] i2c: gpio: suppress error on probe defer Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 75/89] nl80211: add missing attribute validation for critical protocol indication Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 76/89] nl80211: add missing attribute validation for beacon report scanning Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 77/89] nl80211: add missing attribute validation for channel switch Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 78/89] perf bench futex-wake: Restore thread count default to online CPU count Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 79/89] netfilter: cthelper: add missing attribute validation for cthelper Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 80/89] netfilter: nft_payload: add missing attribute validation for payload csum flags Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 81/89] netfilter: nft_tunnel: add missing attribute validation for tunnels Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 82/89] iommu/vt-d: Fix the wrong printing in RHSA parsing Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 83/89] iommu/vt-d: Ignore devices with out-of-spec domain number Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 84/89] i2c: acpi: put device when verifying client fails Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 85/89] ipv6: restrict IPV6_ADDRFORM operation Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 86/89] net/smc: check for valid ib_client_data Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 87/89] net/smc: cancel event worker during device removal Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 88/89] efi: Add a sanity check to efivar_store_raw() Greg Kroah-Hartman
2020-03-17 10:55 ` [PATCH 4.19 89/89] batman-adv: Avoid free/alloc race when handling OGM2 buffer Greg Kroah-Hartman
2020-03-17 20:16 ` [PATCH 4.19 00/89] 4.19.111-rc1 review Guenter Roeck
2020-03-17 20:26 ` Naresh Kamboju
2020-03-18 0:08 ` shuah
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