From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Maher Sanalla <msanalla@nvidia.com>,
Moshe Shemesh <moshe@nvidia.com>,
Saeed Mahameed <saeedm@nvidia.com>
Subject: [PATCH 5.15 15/32] net/mlx5: Use del_timer_sync in fw reset flow of halting poll
Date: Fri, 4 Feb 2022 10:22:25 +0100 [thread overview]
Message-ID: <20220204091915.764312201@linuxfoundation.org> (raw)
In-Reply-To: <20220204091915.247906930@linuxfoundation.org>
From: Maher Sanalla <msanalla@nvidia.com>
commit 3c5193a87b0fea090aa3f769d020337662d87b5e upstream.
Substitute del_timer() with del_timer_sync() in fw reset polling
deactivation flow, in order to prevent a race condition which occurs
when del_timer() is called and timer is deactivated while another
process is handling the timer interrupt. A situation that led to
the following call trace:
RIP: 0010:run_timer_softirq+0x137/0x420
<IRQ>
recalibrate_cpu_khz+0x10/0x10
ktime_get+0x3e/0xa0
? sched_clock_cpu+0xb/0xc0
__do_softirq+0xf5/0x2ea
irq_exit_rcu+0xc1/0xf0
sysvec_apic_timer_interrupt+0x9e/0xc0
asm_sysvec_apic_timer_interrupt+0x12/0x20
</IRQ>
Fixes: 38b9f903f22b ("net/mlx5: Handle sync reset request event")
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -131,7 +131,7 @@ static void mlx5_stop_sync_reset_poll(st
{
struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset;
- del_timer(&fw_reset->timer);
+ del_timer_sync(&fw_reset->timer);
}
static void mlx5_sync_reset_clear_reset_requested(struct mlx5_core_dev *dev, bool poll_health)
next prev parent reply other threads:[~2022-02-04 9:24 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 9:22 [PATCH 5.15 00/32] 5.15.20-rc1 review Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 01/32] PCI: pciehp: Fix infinite loop in IRQ handler upon power fault Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 02/32] selftests: mptcp: fix ipv6 routing setup Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 03/32] net: ipa: use a bitmap for endpoint replenish_enabled Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 04/32] net: ipa: prevent concurrent replenish Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 05/32] drm/vc4: hdmi: Make sure the device is powered with CEC Greg Kroah-Hartman
2022-02-05 17:12 ` Guenter Roeck
2022-02-05 17:56 ` Greg Kroah-Hartman
2022-02-05 18:41 ` Guenter Roeck
2022-02-06 12:09 ` Greg Kroah-Hartman
2022-02-06 17:32 ` Guenter Roeck
2022-02-04 9:22 ` [PATCH 5.15 06/32] cgroup-v1: Require capabilities to set release_agent Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 07/32] Revert "mm/gup: small refactoring: simplify try_grab_page()" Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 08/32] ovl: dont fail copy up if no fileattr support on upper Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 09/32] lockd: fix server crash on reboot of client holding lock Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 10/32] lockd: fix failure to cleanup client locks Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 11/32] net/mlx5e: IPsec: Fix tunnel mode crypto offload for non TCP/UDP traffic Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 12/32] net/mlx5: Bridge, take rtnl lock in init error handler Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 13/32] net/mlx5: Bridge, ensure dev_name is null-terminated Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 14/32] net/mlx5e: Fix handling of wrong devices during bond netevent Greg Kroah-Hartman
2022-02-04 9:22 ` Greg Kroah-Hartman [this message]
2022-02-04 9:22 ` [PATCH 5.15 16/32] net/mlx5e: Fix module EEPROM query Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 17/32] net/mlx5: Fix offloading with ESWITCH_IPV4_TTL_MODIFY_ENABLE Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 18/32] net/mlx5e: Dont treat small ceil values as unlimited in HTB offload Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 19/32] net/mlx5: Bridge, Fix devlink deadlock on net namespace deletion Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 20/32] net/mlx5: E-Switch, Fix uninitialized variable modact Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 21/32] ipheth: fix EOVERFLOW in ipheth_rcvbulk_callback Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 22/32] i40e: Fix reset bw limit when DCB enabled with 1 TC Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 23/32] i40e: Fix reset path while removing the driver Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 24/32] net: amd-xgbe: ensure to reset the tx_timer_active flag Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 25/32] net: amd-xgbe: Fix skb data length underflow Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 26/32] fanotify: Fix stale file descriptor in copy_event_to_user() Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 27/32] net: sched: fix use-after-free in tc_new_tfilter() Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 28/32] rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink() Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 29/32] cpuset: Fix the bug that subpart_cpus updated wrongly in update_cpumask() Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 30/32] e1000e: Handshake with CSME starts from ADL platforms Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 31/32] af_packet: fix data-race in packet_setsockopt / packet_setsockopt Greg Kroah-Hartman
2022-02-04 9:22 ` [PATCH 5.15 32/32] tcp: add missing tcp_skb_can_collapse() test in tcp_shift_skb_data() Greg Kroah-Hartman
2022-02-04 12:21 ` [PATCH 5.15 00/32] 5.15.20-rc1 review Bagas Sanjaya
2022-02-04 17:48 ` Florian Fainelli
2022-02-04 20:31 ` Shuah Khan
2022-02-04 21:08 ` Guenter Roeck
2022-02-04 22:42 ` Ron Economos
2022-02-04 23:04 ` Justin Forbes
2022-02-05 0:18 ` Fox Chen
2022-02-05 5:07 ` Slade Watkins
2022-02-05 6:51 ` Naresh Kamboju
2022-02-05 14:32 ` Sudip Mukherjee
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