| Message ID | 87dc45b122d26d63c80532976813c9365d7160b3.1670140888.git.deren.wu@mediatek.com |
|---|---|
| State | New |
| Headers | show |
| Series | mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING | expand |
On Sun, 4 Dec 2022 at 09:27, Deren Wu <deren.wu@mediatek.com> wrote: > > vub300_enable_sdio_irq() works with mutex and need TASK_RUNNING here. > Ensure that we mark current as TASK_RUNNING for sleepable context. > > [ 77.554641] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff92a72c1d>] sdio_irq_thread+0x17d/0x5b0 > [ 77.554652] WARNING: CPU: 2 PID: 1983 at kernel/sched/core.c:9813 __might_sleep+0x116/0x160 > [ 77.554905] CPU: 2 PID: 1983 Comm: ksdioirqd/mmc1 Tainted: G OE 6.1.0-rc5 #1 > [ 77.554910] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, BIOS BECFL357.86A.0081.2020.0504.1834 05/04/2020 > [ 77.554912] RIP: 0010:__might_sleep+0x116/0x160 > [ 77.554920] RSP: 0018:ffff888107b7fdb8 EFLAGS: 00010282 > [ 77.554923] RAX: 0000000000000000 RBX: ffff888118c1b740 RCX: 0000000000000000 > [ 77.554926] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffed1020f6ffa9 > [ 77.554928] RBP: ffff888107b7fde0 R08: 0000000000000001 R09: ffffed1043ea60ba > [ 77.554930] R10: ffff88821f5305cb R11: ffffed1043ea60b9 R12: ffffffff93aa3a60 > [ 77.554932] R13: 000000000000011b R14: 7fffffffffffffff R15: ffffffffc0558660 > [ 77.554934] FS: 0000000000000000(0000) GS:ffff88821f500000(0000) knlGS:0000000000000000 > [ 77.554937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 77.554939] CR2: 00007f8a44010d68 CR3: 000000024421a003 CR4: 00000000003706e0 > [ 77.554942] Call Trace: > [ 77.554944] <TASK> > [ 77.554952] mutex_lock+0x78/0xf0 > [ 77.554973] vub300_enable_sdio_irq+0x103/0x3c0 [vub300] > [ 77.554981] sdio_irq_thread+0x25c/0x5b0 > [ 77.555006] kthread+0x2b8/0x370 > [ 77.555017] ret_from_fork+0x1f/0x30 > [ 77.555023] </TASK> > [ 77.555025] ---[ end trace 0000000000000000 ]--- > > Fixes: 88095e7b473a ("mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver") > Signed-off-by: Deren Wu <deren.wu@mediatek.com> Ideally this driver should be converted to use the sdio_signal_irq() interface and thus move away from the legacy mmc_signal_sdio_irq() interface. However, as a fix for stable kernels, this looks good to me! So, applied for next and by adding a stable tag, thanks! Kind regards Uffe > --- > drivers/mmc/host/vub300.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c > index 97beece62fec..b58a1a869ed8 100644 > --- a/drivers/mmc/host/vub300.c > +++ b/drivers/mmc/host/vub300.c > @@ -2049,6 +2049,7 @@ static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) > return; > kref_get(&vub300->kref); > if (enable) { > + set_current_state(TASK_RUNNING); > mutex_lock(&vub300->irq_mutex); > if (vub300->irqs_queued) { > vub300->irqs_queued -= 1; > @@ -2064,6 +2065,7 @@ static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) > vub300_queue_poll_work(vub300, 0); > } > mutex_unlock(&vub300->irq_mutex); > + set_current_state(TASK_INTERRUPTIBLE); > } else { > vub300->irq_enabled = 0; > } > -- > 2.18.0 >
diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c index 97beece62fec..b58a1a869ed8 100644 --- a/drivers/mmc/host/vub300.c +++ b/drivers/mmc/host/vub300.c @@ -2049,6 +2049,7 @@ static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) return; kref_get(&vub300->kref); if (enable) { + set_current_state(TASK_RUNNING); mutex_lock(&vub300->irq_mutex); if (vub300->irqs_queued) { vub300->irqs_queued -= 1; @@ -2064,6 +2065,7 @@ static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) vub300_queue_poll_work(vub300, 0); } mutex_unlock(&vub300->irq_mutex); + set_current_state(TASK_INTERRUPTIBLE); } else { vub300->irq_enabled = 0; }
vub300_enable_sdio_irq() works with mutex and need TASK_RUNNING here. Ensure that we mark current as TASK_RUNNING for sleepable context. [ 77.554641] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff92a72c1d>] sdio_irq_thread+0x17d/0x5b0 [ 77.554652] WARNING: CPU: 2 PID: 1983 at kernel/sched/core.c:9813 __might_sleep+0x116/0x160 [ 77.554905] CPU: 2 PID: 1983 Comm: ksdioirqd/mmc1 Tainted: G OE 6.1.0-rc5 #1 [ 77.554910] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, BIOS BECFL357.86A.0081.2020.0504.1834 05/04/2020 [ 77.554912] RIP: 0010:__might_sleep+0x116/0x160 [ 77.554920] RSP: 0018:ffff888107b7fdb8 EFLAGS: 00010282 [ 77.554923] RAX: 0000000000000000 RBX: ffff888118c1b740 RCX: 0000000000000000 [ 77.554926] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffed1020f6ffa9 [ 77.554928] RBP: ffff888107b7fde0 R08: 0000000000000001 R09: ffffed1043ea60ba [ 77.554930] R10: ffff88821f5305cb R11: ffffed1043ea60b9 R12: ffffffff93aa3a60 [ 77.554932] R13: 000000000000011b R14: 7fffffffffffffff R15: ffffffffc0558660 [ 77.554934] FS: 0000000000000000(0000) GS:ffff88821f500000(0000) knlGS:0000000000000000 [ 77.554937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.554939] CR2: 00007f8a44010d68 CR3: 000000024421a003 CR4: 00000000003706e0 [ 77.554942] Call Trace: [ 77.554944] <TASK> [ 77.554952] mutex_lock+0x78/0xf0 [ 77.554973] vub300_enable_sdio_irq+0x103/0x3c0 [vub300] [ 77.554981] sdio_irq_thread+0x25c/0x5b0 [ 77.555006] kthread+0x2b8/0x370 [ 77.555017] ret_from_fork+0x1f/0x30 [ 77.555023] </TASK> [ 77.555025] ---[ end trace 0000000000000000 ]--- Fixes: 88095e7b473a ("mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver") Signed-off-by: Deren Wu <deren.wu@mediatek.com> --- drivers/mmc/host/vub300.c | 2 ++ 1 file changed, 2 insertions(+)