From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jiri Slaby <jirislaby@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [PATCH 5.10 095/102] tty: fix up hung_up_tty_read() conversion
Date: Fri, 5 Mar 2021 13:21:54 +0100 [thread overview]
Message-ID: <20210305120907.951364140@linuxfoundation.org> (raw)
In-Reply-To: <20210305120903.276489876@linuxfoundation.org>
From: Linus Torvalds <torvalds@linux-foundation.org>
commit ddc5fda7456178e2cbc87675b370920d98360daf upstream.
In commit "tty: implement read_iter", I left the read_iter conversion of
the hung up tty case alone, because I incorrectly thought it didn't
matter.
Jiri showed me the errors of my ways, and pointed out the problems with
that incomplete conversion. Fix it all up.
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/CAHk-=wh+-rGsa=xruEWdg_fJViFG8rN9bpLrfLz=_yBYh2tBhA@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/tty_io.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -429,8 +429,7 @@ struct tty_driver *tty_find_polling_driv
EXPORT_SYMBOL_GPL(tty_find_polling_driver);
#endif
-static ssize_t hung_up_tty_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
+static ssize_t hung_up_tty_read(struct kiocb *iocb, struct iov_iter *to)
{
return 0;
}
@@ -502,7 +501,7 @@ static const struct file_operations cons
static const struct file_operations hung_up_tty_fops = {
.llseek = no_llseek,
- .read = hung_up_tty_read,
+ .read_iter = hung_up_tty_read,
.write_iter = hung_up_tty_write,
.poll = hung_up_tty_poll,
.unlocked_ioctl = hung_up_tty_ioctl,
@@ -929,8 +928,10 @@ static ssize_t tty_read(struct kiocb *io
/* We want to wait for the line discipline to sort out in this
situation */
ld = tty_ldisc_ref_wait(tty);
+ if (!ld)
+ return hung_up_tty_read(iocb, to);
i = -EIO;
- if (ld && ld->ops->read)
+ if (ld->ops->read)
i = iterate_tty_read(ld, tty, file, to);
tty_ldisc_deref(ld);
next prev parent reply other threads:[~2021-03-05 12:33 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 12:20 [PATCH 5.10 000/102] 5.10.21-rc1 review Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 001/102] net: usb: qmi_wwan: support ZTE P685M modem Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 002/102] Input: elantech - fix protocol errors for some trackpoints in SMBus mode Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 003/102] Input: elan_i2c - add new trackpoint report type 0x5F Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 004/102] drm/virtio: use kvmalloc for large allocations Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 005/102] x86/build: Treat R_386_PLT32 relocation as R_386_PC32 Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 006/102] JFS: more checks for invalid superblock Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 007/102] sched/core: Allow try_invoke_on_locked_down_task() with irqs disabled Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 008/102] udlfb: Fix memory leak in dlfb_usb_probe Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 009/102] media: mceusb: sanity check for prescaler value Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 010/102] erofs: fix shift-out-of-bounds of blkszbits Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 011/102] media: v4l2-ctrls.c: fix shift-out-of-bounds in std_validate Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 012/102] xfs: Fix assert failure in xfs_setattr_size() Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 013/102] net/af_iucv: remove WARN_ONCE on malformed RX packets Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 014/102] smackfs: restrict bytes count in smackfs write functions Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 015/102] tomoyo: ignore data race while checking quota Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 016/102] net: fix up truesize of cloned skb in skb_prepare_for_shift() Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 017/102] riscv: Get rid of MAX_EARLY_MAPPING_SIZE Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 018/102] nbd: handle device refs for DESTROY_ON_DISCONNECT properly Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 019/102] mm/hugetlb.c: fix unnecessary address expansion of pmd sharing Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 020/102] RDMA/rtrs: Do not signal for heatbeat Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 021/102] RDMA/rtrs-clt: Use bitmask to check sess->flags Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 022/102] RDMA/rtrs-srv: Do not signal REG_MR Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 023/102] tcp: fix tcp_rmem documentation Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 024/102] mptcp: do not wakeup listener for MPJ subflows Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 025/102] net: bridge: use switchdev for port flags set through sysfs too Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 026/102] net/sched: cls_flower: Reject invalid ct_state flags rules Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 027/102] net: dsa: tag_rtl4_a: Support also egress tags Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 028/102] net: ag71xx: remove unnecessary MTU reservation Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 029/102] net: hsr: add support for EntryForgetTime Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 030/102] net: psample: Fix netlink skb length with tunnel info Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 031/102] net: fix dev_ifsioc_locked() race condition Greg Kroah-Hartman
2021-03-08 12:50 ` Pavel Machek
2021-03-08 13:21 ` Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 032/102] dt-bindings: ethernet-controller: fix fixed-link specification Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 033/102] dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/ Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 034/102] ASoC: qcom: Remove useless debug print Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 035/102] rsi: Fix TX EAPOL packet handling against iwlwifi AP Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 036/102] rsi: Move card interrupt handling to RX thread Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 037/102] rcu/nocb: Trigger self-IPI on late deferred wake up before user resume Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 038/102] entry: Explicitly flush pending rcuog wakeup before last rescheduling point Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 039/102] entry/kvm: " Greg Kroah-Hartman
2021-03-05 12:20 ` [PATCH 5.10 040/102] EDAC/amd64: Do not load on family 0x15, model 0x13 Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 041/102] staging: fwserial: Fix error handling in fwserial_create Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 042/102] x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 043/102] vt/consolemap: do font sum unsigned Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 044/102] wlcore: Fix command execute failure 19 for wl12xx Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 045/102] Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 046/102] Bluetooth: btusb: fix memory leak on suspend and resume Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 047/102] mt76: mt7615: reset token when mac_reset happens Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 048/102] pktgen: fix misuse of BUG_ON() in pktgen_thread_worker() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 049/102] ath10k: fix wmi mgmt tx queue full due to race condition Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 050/102] net: sfp: add mode quirk for GPON module Ubiquiti U-Fiber Instant Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 051/102] Bluetooth: Add new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 052/102] Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 053/102] staging: most: sound: add sanity check for function argument Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 054/102] staging: bcm2835-audio: Replace unsafe strcpy() with strscpy() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 055/102] brcmfmac: Add DMI nvram filename quirk for Predia Basic tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 056/102] brcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 057/102] drm/hisilicon: Fix use-after-free Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 058/102] crypto: tcrypt - avoid signed overflow in byte count Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 059/102] fs: make unlazy_walk() error handling consistent Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 060/102] drm/amdgpu: Add check to prevent IH overflow Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 061/102] PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 062/102] ASoC: Intel: bytcr_rt5640: Add new BYT_RT5640_NO_SPEAKERS quirk-flag Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 063/102] drm/amd/display: Guard against NULL pointer deref when get_i2c_info fails Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 064/102] drm/amd/amdgpu: add error handling to amdgpu_virt_read_pf2vf_data Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 065/102] media: uvcvideo: Allow entities with no pads Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 066/102] f2fs: handle unallocated section and zone on pinned/atgc Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 067/102] f2fs: fix to set/clear I_LINKABLE under i_lock Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 068/102] nvme-core: add cancel tagset helpers Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 069/102] nvme-rdma: add clean action for failed reconnection Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 070/102] nvme-tcp: " Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 071/102] ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 072/102] btrfs: fix error handling in commit_fs_roots Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 073/102] drm/amdgpu: enable only one high prio compute queue Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 074/102] perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[] Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 075/102] ASoC: Intel: sof-sdw: indent and add quirks consistently Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 076/102] ASoC: Intel: sof_sdw: detect DMIC number based on mach params Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 077/102] parisc: Bump 64-bit IRQ stack size to 64 KB Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 078/102] sched/features: Fix hrtick reprogramming Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 079/102] ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID 7316R tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 080/102] ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 081/102] ASoC: Intel: bytcr_rt5651: Add quirk for the Jumper EZpad 7 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 082/102] ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 083/102] scsi: iscsi: Restrict sessions and handles to admin capabilities Greg Kroah-Hartman
2021-03-05 22:42 ` Pavel Machek
2021-03-06 0:05 ` Lee Duncan
2021-03-05 12:21 ` [PATCH 5.10 084/102] scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 085/102] scsi: iscsi: Verify lengths on passthrough PDUs Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 086/102] Xen/gnttab: handle p2m update errors on a per-slot basis Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 087/102] xen-netback: respect gnttab_map_refs()s return value Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 088/102] xen: fix p2m size in dom0 for disabled memory hotplug case Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 089/102] zsmalloc: account the number of compacted pages correctly Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 090/102] remoteproc/mediatek: Fix kernel test robot warning Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 091/102] swap: fix swapfile read/write offset Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 092/102] powerpc/sstep: Check instruction validity against ISA version before emulation Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 093/102] powerpc/sstep: Fix incorrect return from analyze_instr() Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 094/102] tty: fix up iterate_tty_read() EOVERFLOW handling Greg Kroah-Hartman
2021-03-05 12:21 ` Greg Kroah-Hartman [this message]
2021-03-05 12:21 ` [PATCH 5.10 096/102] tty: clean up legacy leftovers from n_tty line discipline Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 097/102] tty: teach n_tty line discipline about the new "cookie continuations" Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 098/102] tty: teach the n_tty ICANON case about the new "cookie continuations" too Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 099/102] media: v4l: ioctl: Fix memory leak in video_usercopy Greg Kroah-Hartman
2021-03-05 12:21 ` [PATCH 5.10 100/102] ALSA: hda/realtek: Add quirk for Clevo NH55RZQ Greg Kroah-Hartman
2021-03-05 12:22 ` [PATCH 5.10 101/102] ALSA: hda/realtek: Add quirk for Intel NUC 10 Greg Kroah-Hartman
2021-03-05 12:22 ` [PATCH 5.10 102/102] ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board Greg Kroah-Hartman
2021-03-05 22:10 ` [PATCH 5.10 000/102] 5.10.21-rc1 review Pavel Machek
2021-03-07 17:18 ` Pavel Machek
2021-03-07 17:47 ` Greg Kroah-Hartman
2021-03-06 3:24 ` Guenter Roeck
2021-03-06 9:54 ` Greg Kroah-Hartman
2021-03-06 17:19 ` Greg Kroah-Hartman
2021-03-06 5:31 ` Florian Fainelli
2021-03-07 11:39 ` Greg Kroah-Hartman
2021-03-06 6:25 ` Samuel Zou
2021-03-07 11:38 ` Greg Kroah-Hartman
2021-03-06 9:36 ` Naresh Kamboju
2021-03-06 16:50 ` Guenter Roeck
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