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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
	Felipe Balbi <felipe.balbi@linux.intel.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-usb@vger.kernel.org
Subject: [PATCH AUTOSEL 5.0 025/317] usb: dwc3: move synchronize_irq() out of the spinlock protected block
Date: Wed, 22 May 2019 15:18:46 -0400	[thread overview]
Message-ID: <20190522192338.23715-25-sashal@kernel.org> (raw)
In-Reply-To: <20190522192338.23715-1-sashal@kernel.org>

From: Marek Szyprowski <m.szyprowski@samsung.com>

[ Upstream commit 41a91c606e7d2b74358a944525267cc451c271e8 ]

dwc3_gadget_suspend() is called under dwc->lock spinlock. In such context
calling synchronize_irq() is not allowed. Move the problematic call out
of the protected block to fix the following kernel BUG during system
suspend:

BUG: sleeping function called from invalid context at kernel/irq/manage.c:112
in_atomic(): 1, irqs_disabled(): 128, pid: 1601, name: rtcwake
6 locks held by rtcwake/1601:
 #0: f70ac2a2 (sb_writers#7){.+.+}, at: vfs_write+0x130/0x16c
 #1: b5fe1270 (&of->mutex){+.+.}, at: kernfs_fop_write+0xc0/0x1e4
 #2: 7e597705 (kn->count#60){.+.+}, at: kernfs_fop_write+0xc8/0x1e4
 #3: 8b3527d0 (system_transition_mutex){+.+.}, at: pm_suspend+0xc4/0xc04
 #4: fc7f1c42 (&dev->mutex){....}, at: __device_suspend+0xd8/0x74c
 #5: 4b36507e (&(&dwc->lock)->rlock){....}, at: dwc3_gadget_suspend+0x24/0x3c
irq event stamp: 11252
hardirqs last  enabled at (11251): [<c09c54a4>] _raw_spin_unlock_irqrestore+0x6c/0x74
hardirqs last disabled at (11252): [<c09c4d44>] _raw_spin_lock_irqsave+0x1c/0x5c
softirqs last  enabled at (9744): [<c0102564>] __do_softirq+0x3a4/0x66c
softirqs last disabled at (9737): [<c0128528>] irq_exit+0x140/0x168
Preemption disabled at:
[<00000000>]   (null)
CPU: 7 PID: 1601 Comm: rtcwake Not tainted
5.0.0-rc3-next-20190122-00039-ga3f4ee4f8a52 #5252
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[<c01110f0>] (unwind_backtrace) from [<c010d120>] (show_stack+0x10/0x14)
[<c010d120>] (show_stack) from [<c09a4d04>] (dump_stack+0x90/0xc8)
[<c09a4d04>] (dump_stack) from [<c014c700>] (___might_sleep+0x22c/0x2c8)
[<c014c700>] (___might_sleep) from [<c0189d68>] (synchronize_irq+0x28/0x84)
[<c0189d68>] (synchronize_irq) from [<c05cbbf8>] (dwc3_gadget_suspend+0x34/0x3c)
[<c05cbbf8>] (dwc3_gadget_suspend) from [<c05bd020>] (dwc3_suspend_common+0x154/0x410)
[<c05bd020>] (dwc3_suspend_common) from [<c05bd34c>] (dwc3_suspend+0x14/0x2c)
[<c05bd34c>] (dwc3_suspend) from [<c051c730>] (platform_pm_suspend+0x2c/0x54)
[<c051c730>] (platform_pm_suspend) from [<c05285d4>] (dpm_run_callback+0xa4/0x3dc)
[<c05285d4>] (dpm_run_callback) from [<c0528a40>] (__device_suspend+0x134/0x74c)
[<c0528a40>] (__device_suspend) from [<c052c508>] (dpm_suspend+0x174/0x588)
[<c052c508>] (dpm_suspend) from [<c0182134>] (suspend_devices_and_enter+0xc0/0xe74)
[<c0182134>] (suspend_devices_and_enter) from [<c0183658>] (pm_suspend+0x770/0xc04)
[<c0183658>] (pm_suspend) from [<c0180ddc>] (state_store+0x6c/0xcc)
[<c0180ddc>] (state_store) from [<c09a9a70>] (kobj_attr_store+0x14/0x20)
[<c09a9a70>] (kobj_attr_store) from [<c02d6800>] (sysfs_kf_write+0x4c/0x50)
[<c02d6800>] (sysfs_kf_write) from [<c02d594c>] (kernfs_fop_write+0xfc/0x1e4)
[<c02d594c>] (kernfs_fop_write) from [<c02593d8>] (__vfs_write+0x2c/0x160)
[<c02593d8>] (__vfs_write) from [<c0259694>] (vfs_write+0xa4/0x16c)
[<c0259694>] (vfs_write) from [<c0259870>] (ksys_write+0x40/0x8c)
[<c0259870>] (ksys_write) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
Exception stack(0xed55ffa8 to 0xed55fff0)
...

Fixes: 01c10880d242 ("usb: dwc3: gadget: synchronize_irq dwc irq in suspend")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/core.c   | 2 ++
 drivers/usb/dwc3/gadget.c | 2 --
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index f944cea4056bc..72110a8c49d68 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1600,6 +1600,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
 		spin_lock_irqsave(&dwc->lock, flags);
 		dwc3_gadget_suspend(dwc);
 		spin_unlock_irqrestore(&dwc->lock, flags);
+		synchronize_irq(dwc->irq_gadget);
 		dwc3_core_exit(dwc);
 		break;
 	case DWC3_GCTL_PRTCAP_HOST:
@@ -1632,6 +1633,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
 			spin_lock_irqsave(&dwc->lock, flags);
 			dwc3_gadget_suspend(dwc);
 			spin_unlock_irqrestore(&dwc->lock, flags);
+			synchronize_irq(dwc->irq_gadget);
 		}
 
 		dwc3_otg_exit(dwc);
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 9f941cdb0691d..1227e8f5a5c87 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -3385,8 +3385,6 @@ int dwc3_gadget_suspend(struct dwc3 *dwc)
 	dwc3_disconnect_gadget(dwc);
 	__dwc3_gadget_stop(dwc);
 
-	synchronize_irq(dwc->irq_gadget);
-
 	return 0;
 }
 
-- 
2.20.1


  parent reply	other threads:[~2019-05-22 19:24 UTC|newest]

Thread overview: 107+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 19:18 [PATCH AUTOSEL 5.0 001/317] gfs2: Fix lru_count going negative Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 002/317] cxgb4: Fix error path in cxgb4_init_module Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 003/317] afs: Fix getting the afs.fid xattr Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 004/317] NFS: make nfs_match_client killable Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 005/317] gfs2: fix race between gfs2_freeze_func and unmount Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 006/317] IB/hfi1: Fix WQ_MEM_RECLAIM warning Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 007/317] gfs2: Fix occasional glock use-after-free Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 008/317] mmc: core: Verify SD bus width Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 009/317] batman-adv: mcast: fix multicast tt/tvlv worker locking Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 010/317] tools/bpf: fix perf build error with uClibc (seen on ARC) Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 011/317] selftests/bpf: set RLIMIT_MEMLOCK properly for test_libbpf_open.c Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 012/317] bpftool: exclude bash-completion/bpftool from .gitignore pattern Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 013/317] ice: Separate if conditions for ice_set_features() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 014/317] blk-mq: split blk_mq_alloc_and_init_hctx into two parts Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 015/317] blk-mq: grab .q_usage_counter when queuing request from plug code path Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 016/317] dmaengine: tegra210-dma: free dma controller in remove() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 017/317] net: ena: gcc 8: fix compilation warning Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 018/317] net: ena: fix: set freed objects to NULL to avoid failing future allocations Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 019/317] hv_netvsc: fix race that may miss tx queue wakeup Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 020/317] orangefs: truncate before updating size Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 021/317] Bluetooth: Ignore CC events not matching the last HCI command Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 022/317] pinctrl: zte: fix leaked of_node references Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 023/317] ASoC: Intel: kbl_da7219_max98357a: Map BTN_0 to KEY_PLAYPAUSE Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 024/317] usb: dwc2: gadget: Increase descriptors count for ISOC's Sasha Levin
2019-05-22 19:18 ` Sasha Levin [this message]
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 026/317] usb: gadget: f_fs: don't free buffer prematurely Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 027/317] ASoC: hdmi-codec: unlock the device on startup errors Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 028/317] leds: avoid races with workqueue Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 029/317] powerpc/perf: Return accordingly on invalid chip-id in Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 030/317] powerpc/boot: Fix missing check of lseek() return value Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 031/317] powerpc/perf: Fix loop exit condition in nest_imc_event_init Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 032/317] spi: atmel-quadspi: fix crash while suspending Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 033/317] ASoC: imx: fix fiq dependencies Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 034/317] spi: pxa2xx: fix SCR (divisor) calculation Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 035/317] brcm80211: potential NULL dereference in brcmf_cfg80211_vndr_cmds_dcmd_handler() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 036/317] ACPI / property: fix handling of data_nodes in acpi_get_next_subnode() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 037/317] drm/nouveau/bar/nv50: ensure BAR is mapped Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 038/317] media: stm32-dcmi: return appropriate error codes during probe Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 039/317] ARM: vdso: Remove dependency with the arch_timer driver internals Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 040/317] arm64: Fix compiler warning from pte_unmap() with -Wunused-but-set-variable Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 041/317] x86/ftrace: Set trampoline pages as executable Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 042/317] powerpc/watchdog: Use hrtimers for per-CPU heartbeat Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 043/317] sched/cpufreq: Fix kobject memleak Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 044/317] scsi: qla2xxx: Fix a qla24xx_enable_msix() error path Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 045/317] scsi: qla2xxx: Fix abort handling in tcm_qla2xxx_write_pending() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 046/317] scsi: qla2xxx: Avoid that lockdep complains about unsafe locking in tcm_qla2xxx_close_session() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 047/317] scsi: qla2xxx: Fix hardirq-unsafe locking Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 048/317] x86/modules: Avoid breaking W^X while loading modules Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 049/317] Btrfs: fix data bytes_may_use underflow with fallocate due to failed quota reserve Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 050/317] btrfs: fix panic during relocation after ENOSPC before writeback happens Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 051/317] btrfs: Don't panic when we can't find a root key Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 052/317] iwlwifi: pcie: don't crash on invalid RX interrupt Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 053/317] rtc: 88pm860x: prevent use-after-free on device remove Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 054/317] rtc: stm32: manage the get_irq probe defer case Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 055/317] scsi: qedi: Abort ep termination if offload not scheduled Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 056/317] s390/kexec_file: Fix detection of text segment in ELF loader Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 057/317] ALSA: hda: fix unregister device twice on ASoC driver Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 058/317] sched/nohz: Run NOHZ idle load balancer on HK_FLAG_MISC CPUs Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 059/317] net: ethernet: ti: cpsw: fix allmulti cfg in dual_mac mode Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 060/317] w1: fix the resume command API Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 061/317] net: hns3: fix for TX clean num when cleaning TX BD Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 062/317] net: phy: improve genphy_soft_reset Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 063/317] s390: qeth: address type mismatch warning Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 064/317] net: hns3: use atomic_t replace u32 for arq's count Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 065/317] dmaengine: pl330: _stop: clear interrupt status Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 066/317] mac80211/cfg80211: update bss channel on channel switch Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 067/317] USB: serial: fix initial-termios handling Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 068/317] libbpf: fix samples/bpf build failure due to undefined UINT32_MAX Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 069/317] slimbus: fix a potential NULL pointer dereference in of_qcom_slim_ngd_register Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 070/317] driver core: platform: Fix the usage of platform device name(pdev->name) Sasha Levin
2019-05-22 20:04   ` Greg Kroah-Hartman
2019-05-29 18:57     ` Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 071/317] driver core: Postpone DMA tear-down until after devres release for probe failure Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 072/317] ASoC: fsl_sai: Update is_slave_mode with correct value Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 073/317] Fix nfs4.2 return -EINVAL when do dedupe operation Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 074/317] mwifiex: prevent an array overflow Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 075/317] rsi: Fix NULL pointer dereference in kmalloc Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 076/317] net: cw1200: fix a NULL pointer dereference Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 077/317] at76c50x-usb: Don't register led_trigger if usb_register_driver failed Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 078/317] nvme: set 0 capacity if namespace block size exceeds PAGE_SIZE Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 079/317] nvme-rdma: fix a NULL deref when an admin connect times out Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 080/317] nvme-tcp: " Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 081/317] ssb: Fix possible NULL pointer dereference in ssb_host_pcmcia_exit Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 082/317] crypto: sun4i-ss - Fix invalid calculation of hash end Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 083/317] bcache: avoid potential memleak of list of journal_replay(s) in the CACHE_SYNC branch of run_cache_set Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 084/317] bcache: return error immediately in bch_journal_replay() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 085/317] bcache: fix failure in journal relplay Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 086/317] bcache: add failure check to run_cache_set() for journal replay Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 087/317] bcache: avoid clang -Wunintialized warning Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 088/317] RDMA/cma: Consider scope_id while binding to ipv6 ll address Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 089/317] vfio-ccw: Do not call flush_workqueue while holding the spinlock Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 090/317] vfio-ccw: Release any channel program when releasing/removing vfio-ccw mdev Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 091/317] x86/build: Move _etext to actual end of .text Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 092/317] smpboot: Place the __percpu annotation correctly Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 093/317] x86/uaccess: Dont leak the AC flag into __put_user() argument evaluation Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 094/317] x86/mm: Remove in_nmi() warning from 64-bit implementation of vmalloc_fault() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 095/317] mlxsw: spectrum_router: Prevent ipv6 gateway with v4 route via replace and append Sasha Levin
2019-05-22 19:27   ` David Ahern
2019-05-29 19:00     ` Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 096/317] mm/uaccess: Use 'unsigned long' to placate UBSAN warnings on older GCC versions Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 097/317] Bluetooth: hci_qca: Give enough time to ROME controller to bootup Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 098/317] Bluetooth: btbcm: Add default address for BCM43341B Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 099/317] HID: logitech-hidpp: use RAP instead of FAP to get the protocol version Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 100/317] pinctrl: pistachio: fix leaked of_node references Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 101/317] pinctrl: st: " Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 102/317] pinctrl: samsung: " Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 103/317] clk: rockchip: undo several noc and special clocks as critical on rk3288 Sasha Levin

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