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 4.9 20/90] ipvlan: add cond_resched_rcu() while processing muticast backlog
Date: Thu, 19 Mar 2020 13:59:42 +0100 [thread overview]
Message-ID: <20200319123934.945785680@linuxfoundation.org> (raw)
In-Reply-To: <20200319123928.635114118@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
@@ -240,6 +240,7 @@ void ipvlan_process_multicast(struct wor
ret = netif_rx(nskb);
acct:
ipvlan_count_rx(ipvlan, len, ret == NET_RX_SUCCESS, true);
+ cond_resched_rcu();
}
rcu_read_unlock();
next prev parent reply other threads:[~2020-03-19 13:11 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-19 12:59 [PATCH 4.9 00/90] 4.9.217-rc1 review Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 01/90] NFS: Remove superfluous kmap in nfs_readdir_xdr_to_array Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 02/90] phy: Revert toggling reset changes Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 03/90] net: phy: Avoid multiple suspends Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 04/90] cgroup, netclassid: periodically release file_lock on classid updating Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 05/90] gre: fix uninit-value in __iptunnel_pull_header Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 06/90] ipv6/addrconf: call ipv6_mc_up() for non-Ethernet interface Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 07/90] net: macsec: update SCI upon MAC address change Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 08/90] net: nfc: fix bounds checking bugs on "pipe" Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 09/90] r8152: check disconnect status after long sleep Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 10/90] bnxt_en: reinitialize IRQs when MTU is modified Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 11/90] fib: add missing attribute validation for tun_id Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 12/90] nl802154: add missing attribute validation Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 13/90] nl802154: add missing attribute validation for dev_type Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 14/90] macsec: add missing attribute validation for port Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 15/90] net: fq: add missing attribute validation for orphan mask Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 16/90] team: add missing attribute validation for port ifindex Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 17/90] team: add missing attribute validation for array index Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 18/90] nfc: add missing attribute validation for SE API Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 19/90] nfc: add missing attribute validation for vendor subcommand Greg Kroah-Hartman
2020-03-19 12:59 ` Greg Kroah-Hartman [this message]
2020-03-19 12:59 ` [PATCH 4.9 21/90] ipvlan: do not add hardware address of master to its unicast filter list Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 22/90] ipvlan: egress mcast packets are not exceptional Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 23/90] ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast() Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 24/90] ipvlan: dont deref eth hdr before checking its set Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 25/90] macvlan: add cond_resched() during multicast processing Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 26/90] net: fec: validate the new settings in fec_enet_set_coalesce() Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 27/90] slip: make slhc_compress() more robust against malicious packets Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 28/90] bonding/alb: make sure arp header is pulled before accessing it Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 29/90] cgroup: memcg: net: do not associate sock with unrelated cgroup Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 30/90] net: phy: fix MDIO bus PM PHY resuming Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 31/90] virtio-blk: fix hw_queue stopped on arbitrary error Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 32/90] iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 33/90] workqueue: dont use wq_select_unbound_cpu() for bound works Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 34/90] drm/amd/display: remove duplicated assignment to grph_obj_type Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 35/90] cifs_atomic_open(): fix double-put on late allocation failure Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 36/90] gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache Greg Kroah-Hartman
2020-03-19 12:59 ` [PATCH 4.9 37/90] KVM: x86: clear stale x86_emulate_ctxt->intercept value Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 38/90] ARC: define __ALIGN_STR and __ALIGN symbols for ARC Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 39/90] efi: Fix a race and a buffer overflow while reading efivars via sysfs Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 40/90] iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 41/90] iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 42/90] nl80211: add missing attribute validation for critical protocol indication Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 43/90] nl80211: add missing attribute validation for beacon report scanning Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 44/90] nl80211: add missing attribute validation for channel switch Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 45/90] netfilter: cthelper: add missing attribute validation for cthelper Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 46/90] mwifiex: Fix heap overflow in mmwifiex_process_tdls_action_frame() Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 47/90] iommu/vt-d: Fix the wrong printing in RHSA parsing Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 48/90] iommu/vt-d: Ignore devices with out-of-spec domain number Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 49/90] ipv6: restrict IPV6_ADDRFORM operation Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 50/90] efi: Add a sanity check to efivar_store_raw() Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 51/90] batman-adv: Fix double free during fragment merge error Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 52/90] batman-adv: Fix transmission of final, 16th fragment Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 53/90] batman-adv: Initialize gw sel_class via batadv_algo Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 54/90] batman-adv: Fix rx packet/bytes stats on local ARP reply Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 55/90] batman-adv: Use default throughput value on cfg80211 error Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 56/90] batman-adv: Accept only filled wifi station info Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 57/90] batman-adv: fix TT sync flag inconsistencies Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 58/90] batman-adv: Avoid spurious warnings from bat_v neigh_cmp implementation Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 59/90] batman-adv: Always initialize fragment header priority Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 60/90] batman-adv: Fix check of retrieved orig_gw in batadv_v_gw_is_eligible Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 61/90] batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 62/90] batman-adv: Fix internal interface indices types Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 63/90] batman-adv: Avoid race in TT TVLV allocator helper Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 64/90] batman-adv: Fix TT sync flags for intermediate TT responses Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 65/90] batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 66/90] batman-adv: Fix debugfs path for renamed hardif Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 67/90] batman-adv: Fix debugfs path for renamed softif Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 68/90] batman-adv: Avoid storing non-TT-sync flags on singular entries too Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 69/90] batman-adv: Fix multicast TT issues with bogus ROAM flags Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 70/90] batman-adv: Prevent duplicated gateway_node entry Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 71/90] batman-adv: Fix duplicated OGMs on NETDEV_UP Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 72/90] batman-adv: Avoid free/alloc race when handling OGM2 buffer Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 73/90] batman-adv: Avoid free/alloc race when handling OGM buffer Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 74/90] batman-adv: Dont schedule OGM for disabled interface Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 75/90] batman-adv: update data pointers after skb_cow() Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 76/90] batman-adv: Avoid probe ELP information leak Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 77/90] batman-adv: Use explicit tvlv padding for ELP packets Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 78/90] perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 79/90] ACPI: watchdog: Allow disabling WDAT at boot Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 80/90] HID: apple: Add support for recent firmware on Magic Keyboards Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 81/90] HID: i2c-hid: add Trekstor Surfbook E11B to descriptor override Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 82/90] cfg80211: check reg_rule for NULL in handle_channel_custom() Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 83/90] net: ks8851-ml: Fix IRQ handling and locking Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 84/90] mac80211: rx: avoid RCU list traversal under mutex Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 85/90] signal: avoid double atomic counter increments for user accounting Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 86/90] jbd2: fix data races at struct journal_head Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 87/90] ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional() Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 88/90] ARM: 8958/1: rename missed uaccess .fixup section Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 89/90] mm: slub: add missing TID bump in kmem_cache_alloc_bulk() Greg Kroah-Hartman
2020-03-19 13:00 ` [PATCH 4.9 90/90] ipv4: ensure rcu_read_lock() in cipso_v4_error() Greg Kroah-Hartman
2020-03-19 18:01 ` [PATCH 4.9 00/90] 4.9.217-rc1 review Naresh Kamboju
2020-03-19 23:35 ` Guenter Roeck
2020-03-21 0:48 ` shuah
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