* [PATCH] nvmet: Reset ns->file when open fails
@ 2021-05-12 10:13 Daniel Wagner
2021-05-12 12:59 ` kernel test robot
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Daniel Wagner @ 2021-05-12 10:13 UTC (permalink / raw)
To: linux-nvme
Cc: linux-kernel, Christoph Hellwig, Sagi Grimberg,
Chaitanya Kulkarni, Daniel Wagner, Enzo Matsumiya
Reset the ns->file value to NULL also in the error case in
nvmet_file_ns_enable().
The ns->file variable points either to file object or contains the
error code after the filp_open() call. This can lead to following
problem:
When the user first setups an invalid file backend and tries to enable
the ns, it will fail. Then the user switches over to a bdev backend
and enables successfully the ns. The first received I/O will crash the
system because the IO backend is chosen based on the ns->file value:
static u16 nvmet_parse_io_cmd(struct nvmet_req *req)
{
[...]
if (req->ns->file)
return nvmet_file_parse_io_cmd(req);
return nvmet_bdev_parse_io_cmd(req);
}
Reported-by: Enzo Matsumiya <ematsumiya@suse.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
Hi,
We saw the backtrace with following (test) configuration:
nt00:/var/crash/2021-03-22-16:13 # nvmetcli ls /
o- / ......................................................................................................................... [...]
o- hosts ................................................................................................................... [...]
o- ports ................................................................................................................... [...]
| o- 1 .................................................. [trtype=tcp, traddr=192.168.0.134, trsvcid=4420, inline_data_size=16384]
| o- ana_groups .......................................................................................................... [...]
| | o- 1 ..................................................................................................... [state=optimized]
| o- referrals ........................................................................................................... [...]
| o- subsystems .......................................................................................................... [...]
| o- nqn.2014-08.org.nvmexpress:NVMf:uuid:44e52e4f-791e-4d37-a718-ff010ba82e5c ......................................... [...]
o- subsystems .............................................................................................................. [...]
o- nqn.2014-08.org.nvmexpress:NVMf:uuid:44e52e4f-791e-4d37-a718-ff010ba82e5c [version=1.3, allow_any=1, serial=6e91a39f356a26ee]
o- allowed_hosts ....................................................................................................... [...]
o- namespaces .......................................................................................................... [...]
o- 1 ...................................... [path=/dev/nvme0n1, uuid=1c681585-01ec-48db-b772-9d103c8d47a3, grpid=1, enabled]
nvmet: creating controller 2 for subsystem nqn.2014-08.org.nvmexpress:NVMf:uuid:44e52e4f-791e-4d37-a718-ff010ba82e5c for NQN nqn.2014-08.org.nvmexpress:uuid:9b9f4d56-59f6-cbf6-2e26-969777c12e5f.
BUG: kernel NULL pointer dereference, address: 0000000000000012
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] SMP PTI
CPU: 1 PID: 444 Comm: kworker/1:1H Kdump: loaded Tainted: G X 5.3.18-24.52-default #1 SLE15-SP2
Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW71.00V.15401161.B64.2001021853 01/02/2020
Workqueue: nvmet_tcp_wq nvmet_tcp_io_work [nvmet_tcp]
RIP: 0010:nvmet_file_submit_bvec+0x3f/0x130 [nvmet]
Code: 00 53 44 89 c5 48 89 fb 48 83 ec 30 48 8b 77 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 48 8b 07 48 8b 76 50 80 38 01 <48> 8b 76 28 0f 84 c6 00 00 00 4c 8b 6e 20 31 f6 49 89 c8 48 89 d1
RSP: 0018:ffffa111c0353c98 EFLAGS: 00010202
RAX: ffff8bf7069d7f30 RBX: ffff8bf706a00008 RCX: 0000000000001000
RDX: 0000000000000001 RSI: ffffffffffffffea RDI: ffff8bf706a00008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000100 R12: ffff8bf706a000c0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8bf706a00008
FS: 0000000000000000(0000) GS:ffff8bf73fc80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000012 CR3: 000000012a394001 CR4: 00000000003606e0
Call Trace:
nvmet_file_execute_io+0x1ae/0x270 [nvmet]
nvmet_tcp_try_recv_pdu+0x364/0x710 [nvmet_tcp]
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
nvmet_tcp_io_work+0x6d/0xa90 [nvmet_tcp]
process_one_work+0x1f4/0x3e0
worker_thread+0x2d/0x3e0
? process_one_work+0x3e0/0x3e0
kthread+0x10d/0x130
? kthread_park+0xa0/0xa0
ret_from_fork+0x35/0x40
Modules linked in: nvme_fabrics nvmet_tcp nvmet configfs af_packet ip_set nfnetlink iscsi_ibft iscsi_boot_sysfs rfkill x_tables bpfilter vmw_vsock_vmci_transport vsock fuse nls_iso8859_1 nls_cp437 vfat fat intel_rapl_msr intel_rapl_common sb_edac crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd nvme glue_helper nvme_core joydev pcspkr vmw_balloon vmxnet3 button ac i2c_piix4 vmw_vmci btrfs libcrc32c xor hid_generic raid6_pq usbhid sr_mod cdrom sd_mod ata_generic vmwgfx drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm ata_piix ehci_pci drm crc32c_intel uhci_hcd serio_raw ahci libahci ehci_hcd vmw_pvscsi usbcore libata sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua scsi_mod efivarfs [last unloaded: ip_tables]
Supported: Yes, External
CR2: 0000000000000012
Enzo was not able reproduce it reliable so we can't really say if the
patch fixes the crash he saw. But I figured ns->file should be set
back to NULL.
drivers/nvme/target/io-cmd-file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/target/io-cmd-file.c b/drivers/nvme/target/io-cmd-file.c
index 715d4376c997..27430d44ef23 100644
--- a/drivers/nvme/target/io-cmd-file.c
+++ b/drivers/nvme/target/io-cmd-file.c
@@ -51,7 +51,9 @@ int nvmet_file_ns_enable(struct nvmet_ns *ns)
if (IS_ERR(ns->file)) {
pr_err("failed to open file %s: (%ld)\n",
ns->device_path, PTR_ERR(ns->file));
- return PTR_ERR(ns->file);
+ ret = ns->file;
+ ns->file = NULL;
+ return PTR_ERR(ret);
}
ret = nvmet_file_ns_revalidate(ns);
--
2.29.2
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^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] nvmet: Reset ns->file when open fails
2021-05-12 10:13 [PATCH] nvmet: Reset ns->file when open fails Daniel Wagner
@ 2021-05-12 12:59 ` kernel test robot
2021-05-12 13:14 ` kernel test robot
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-05-12 12:59 UTC (permalink / raw)
To: Daniel Wagner, linux-nvme
Cc: kbuild-all, linux-kernel, Christoph Hellwig, Sagi Grimberg,
Chaitanya Kulkarni, Daniel Wagner, Enzo Matsumiya
[-- Attachment #1: Type: text/plain, Size: 3374 bytes --]
Hi Daniel,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linux/master]
[also build test WARNING on hch-configfs/for-next linus/master v5.13-rc1 next-20210512]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd860052c99b1e088352bdd4fb7aef46f8d2ef47
config: i386-randconfig-s002-20210512 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-341-g8af24329-dirty
# https://github.com/0day-ci/linux/commit/406c65a33980a0f58f21c897d9283d9fff9a4eb5
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
git checkout 406c65a33980a0f58f21c897d9283d9fff9a4eb5
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/nvme/target/io-cmd-file.c:54:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected int ret @@ got struct file *file @@
drivers/nvme/target/io-cmd-file.c:54:21: sparse: expected int ret
drivers/nvme/target/io-cmd-file.c:54:21: sparse: got struct file *file
vim +54 drivers/nvme/target/io-cmd-file.c
41
42 int nvmet_file_ns_enable(struct nvmet_ns *ns)
43 {
44 int flags = O_RDWR | O_LARGEFILE;
45 int ret;
46
47 if (!ns->buffered_io)
48 flags |= O_DIRECT;
49
50 ns->file = filp_open(ns->device_path, flags, 0);
51 if (IS_ERR(ns->file)) {
52 pr_err("failed to open file %s: (%ld)\n",
53 ns->device_path, PTR_ERR(ns->file));
> 54 ret = ns->file;
55 ns->file = NULL;
56 return PTR_ERR(ret);
57 }
58
59 ret = nvmet_file_ns_revalidate(ns);
60 if (ret)
61 goto err;
62
63 /*
64 * i_blkbits can be greater than the universally accepted upper bound,
65 * so make sure we export a sane namespace lba_shift.
66 */
67 ns->blksize_shift = min_t(u8,
68 file_inode(ns->file)->i_blkbits, 12);
69
70 ns->bvec_cache = kmem_cache_create("nvmet-bvec",
71 NVMET_MAX_MPOOL_BVEC * sizeof(struct bio_vec),
72 0, SLAB_HWCACHE_ALIGN, NULL);
73 if (!ns->bvec_cache) {
74 ret = -ENOMEM;
75 goto err;
76 }
77
78 ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,
79 mempool_free_slab, ns->bvec_cache);
80
81 if (!ns->bvec_pool) {
82 ret = -ENOMEM;
83 goto err;
84 }
85
86 return ret;
87 err:
88 ns->size = 0;
89 ns->blksize_shift = 0;
90 nvmet_file_ns_disable(ns);
91 return ret;
92 }
93
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
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[-- Attachment #3: Type: text/plain, Size: 158 bytes --]
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Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] nvmet: Reset ns->file when open fails
2021-05-12 10:13 [PATCH] nvmet: Reset ns->file when open fails Daniel Wagner
2021-05-12 12:59 ` kernel test robot
@ 2021-05-12 13:14 ` kernel test robot
2021-05-12 14:59 ` kernel test robot
2021-05-12 15:05 ` kernel test robot
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-05-12 13:14 UTC (permalink / raw)
To: Daniel Wagner, linux-nvme
Cc: kbuild-all, linux-kernel, Christoph Hellwig, Sagi Grimberg,
Chaitanya Kulkarni, Daniel Wagner, Enzo Matsumiya
[-- Attachment #1: Type: text/plain, Size: 4381 bytes --]
Hi Daniel,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linux/master]
[also build test WARNING on hch-configfs/for-next linus/master v5.13-rc1 next-20210512]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd860052c99b1e088352bdd4fb7aef46f8d2ef47
config: microblaze-randconfig-r024-20210512 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/406c65a33980a0f58f21c897d9283d9fff9a4eb5
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
git checkout 406c65a33980a0f58f21c897d9283d9fff9a4eb5
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=microblaze
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/nvme/target/io-cmd-file.c: In function 'nvmet_file_ns_enable':
>> drivers/nvme/target/io-cmd-file.c:54:7: warning: assignment to 'int' from 'struct file *' makes integer from pointer without a cast [-Wint-conversion]
54 | ret = ns->file;
| ^
>> drivers/nvme/target/io-cmd-file.c:56:18: warning: passing argument 1 of 'PTR_ERR' makes pointer from integer without a cast [-Wint-conversion]
56 | return PTR_ERR(ret);
| ^~~
| |
| int
In file included from include/linux/kernfs.h:10,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/dma-mapping.h:7,
from drivers/nvme/target/nvmet.h:9,
from drivers/nvme/target/io-cmd-file.c:11:
include/linux/err.h:29:61: note: expected 'const void *' but argument is of type 'int'
29 | static inline long __must_check PTR_ERR(__force const void *ptr)
| ~~~~~~~~~~~~^~~
vim +54 drivers/nvme/target/io-cmd-file.c
41
42 int nvmet_file_ns_enable(struct nvmet_ns *ns)
43 {
44 int flags = O_RDWR | O_LARGEFILE;
45 int ret;
46
47 if (!ns->buffered_io)
48 flags |= O_DIRECT;
49
50 ns->file = filp_open(ns->device_path, flags, 0);
51 if (IS_ERR(ns->file)) {
52 pr_err("failed to open file %s: (%ld)\n",
53 ns->device_path, PTR_ERR(ns->file));
> 54 ret = ns->file;
55 ns->file = NULL;
> 56 return PTR_ERR(ret);
57 }
58
59 ret = nvmet_file_ns_revalidate(ns);
60 if (ret)
61 goto err;
62
63 /*
64 * i_blkbits can be greater than the universally accepted upper bound,
65 * so make sure we export a sane namespace lba_shift.
66 */
67 ns->blksize_shift = min_t(u8,
68 file_inode(ns->file)->i_blkbits, 12);
69
70 ns->bvec_cache = kmem_cache_create("nvmet-bvec",
71 NVMET_MAX_MPOOL_BVEC * sizeof(struct bio_vec),
72 0, SLAB_HWCACHE_ALIGN, NULL);
73 if (!ns->bvec_cache) {
74 ret = -ENOMEM;
75 goto err;
76 }
77
78 ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,
79 mempool_free_slab, ns->bvec_cache);
80
81 if (!ns->bvec_pool) {
82 ret = -ENOMEM;
83 goto err;
84 }
85
86 return ret;
87 err:
88 ns->size = 0;
89 ns->blksize_shift = 0;
90 nvmet_file_ns_disable(ns);
91 return ret;
92 }
93
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 33257 bytes --]
[-- Attachment #3: Type: text/plain, Size: 158 bytes --]
_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] nvmet: Reset ns->file when open fails
2021-05-12 10:13 [PATCH] nvmet: Reset ns->file when open fails Daniel Wagner
2021-05-12 12:59 ` kernel test robot
2021-05-12 13:14 ` kernel test robot
@ 2021-05-12 14:59 ` kernel test robot
2021-05-12 15:05 ` kernel test robot
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-05-12 14:59 UTC (permalink / raw)
To: Daniel Wagner, linux-nvme
Cc: kbuild-all, clang-built-linux, linux-kernel, Christoph Hellwig,
Sagi Grimberg, Chaitanya Kulkarni, Daniel Wagner, Enzo Matsumiya
[-- Attachment #1: Type: text/plain, Size: 4019 bytes --]
Hi Daniel,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linux/master]
[also build test WARNING on hch-configfs/for-next linus/master v5.13-rc1 next-20210512]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd860052c99b1e088352bdd4fb7aef46f8d2ef47
config: riscv-randconfig-r011-20210512 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a0fed635fe1701470062495a6ffee1c608f3f1bc)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/0day-ci/linux/commit/406c65a33980a0f58f21c897d9283d9fff9a4eb5
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
git checkout 406c65a33980a0f58f21c897d9283d9fff9a4eb5
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/nvme/target/io-cmd-file.c:54:7: warning: incompatible pointer to integer conversion assigning to 'int' from 'struct file *' [-Wint-conversion]
ret = ns->file;
^ ~~~~~~~~
>> drivers/nvme/target/io-cmd-file.c:56:18: warning: incompatible integer to pointer conversion passing 'int' to parameter of type 'const void *' [-Wint-conversion]
return PTR_ERR(ret);
^~~
include/linux/err.h:29:61: note: passing argument to parameter 'ptr' here
static inline long __must_check PTR_ERR(__force const void *ptr)
^
2 warnings generated.
vim +54 drivers/nvme/target/io-cmd-file.c
41
42 int nvmet_file_ns_enable(struct nvmet_ns *ns)
43 {
44 int flags = O_RDWR | O_LARGEFILE;
45 int ret;
46
47 if (!ns->buffered_io)
48 flags |= O_DIRECT;
49
50 ns->file = filp_open(ns->device_path, flags, 0);
51 if (IS_ERR(ns->file)) {
52 pr_err("failed to open file %s: (%ld)\n",
53 ns->device_path, PTR_ERR(ns->file));
> 54 ret = ns->file;
55 ns->file = NULL;
> 56 return PTR_ERR(ret);
57 }
58
59 ret = nvmet_file_ns_revalidate(ns);
60 if (ret)
61 goto err;
62
63 /*
64 * i_blkbits can be greater than the universally accepted upper bound,
65 * so make sure we export a sane namespace lba_shift.
66 */
67 ns->blksize_shift = min_t(u8,
68 file_inode(ns->file)->i_blkbits, 12);
69
70 ns->bvec_cache = kmem_cache_create("nvmet-bvec",
71 NVMET_MAX_MPOOL_BVEC * sizeof(struct bio_vec),
72 0, SLAB_HWCACHE_ALIGN, NULL);
73 if (!ns->bvec_cache) {
74 ret = -ENOMEM;
75 goto err;
76 }
77
78 ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,
79 mempool_free_slab, ns->bvec_cache);
80
81 if (!ns->bvec_pool) {
82 ret = -ENOMEM;
83 goto err;
84 }
85
86 return ret;
87 err:
88 ns->size = 0;
89 ns->blksize_shift = 0;
90 nvmet_file_ns_disable(ns);
91 return ret;
92 }
93
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 32777 bytes --]
[-- Attachment #3: Type: text/plain, Size: 158 bytes --]
_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] nvmet: Reset ns->file when open fails
2021-05-12 10:13 [PATCH] nvmet: Reset ns->file when open fails Daniel Wagner
` (2 preceding siblings ...)
2021-05-12 14:59 ` kernel test robot
@ 2021-05-12 15:05 ` kernel test robot
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-05-12 15:05 UTC (permalink / raw)
To: Daniel Wagner, linux-nvme
Cc: kbuild-all, linux-kernel, Christoph Hellwig, Sagi Grimberg,
Chaitanya Kulkarni, Daniel Wagner, Enzo Matsumiya
[-- Attachment #1: Type: text/plain, Size: 4366 bytes --]
Hi Daniel,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linux/master]
[also build test WARNING on hch-configfs/for-next linus/master v5.13-rc1 next-20210512]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd860052c99b1e088352bdd4fb7aef46f8d2ef47
config: nios2-randconfig-p002-20210512 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/406c65a33980a0f58f21c897d9283d9fff9a4eb5
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Daniel-Wagner/nvmet-Reset-ns-file-when-open-fails/20210512-181435
git checkout 406c65a33980a0f58f21c897d9283d9fff9a4eb5
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=nios2
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/nvme/target/io-cmd-file.c: In function 'nvmet_file_ns_enable':
>> drivers/nvme/target/io-cmd-file.c:54:7: warning: assignment to 'int' from 'struct file *' makes integer from pointer without a cast [-Wint-conversion]
54 | ret = ns->file;
| ^
>> drivers/nvme/target/io-cmd-file.c:56:18: warning: passing argument 1 of 'PTR_ERR' makes pointer from integer without a cast [-Wint-conversion]
56 | return PTR_ERR(ret);
| ^~~
| |
| int
In file included from include/linux/kernfs.h:10,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/dma-mapping.h:7,
from drivers/nvme/target/nvmet.h:9,
from drivers/nvme/target/io-cmd-file.c:11:
include/linux/err.h:29:61: note: expected 'const void *' but argument is of type 'int'
29 | static inline long __must_check PTR_ERR(__force const void *ptr)
| ~~~~~~~~~~~~^~~
vim +54 drivers/nvme/target/io-cmd-file.c
41
42 int nvmet_file_ns_enable(struct nvmet_ns *ns)
43 {
44 int flags = O_RDWR | O_LARGEFILE;
45 int ret;
46
47 if (!ns->buffered_io)
48 flags |= O_DIRECT;
49
50 ns->file = filp_open(ns->device_path, flags, 0);
51 if (IS_ERR(ns->file)) {
52 pr_err("failed to open file %s: (%ld)\n",
53 ns->device_path, PTR_ERR(ns->file));
> 54 ret = ns->file;
55 ns->file = NULL;
> 56 return PTR_ERR(ret);
57 }
58
59 ret = nvmet_file_ns_revalidate(ns);
60 if (ret)
61 goto err;
62
63 /*
64 * i_blkbits can be greater than the universally accepted upper bound,
65 * so make sure we export a sane namespace lba_shift.
66 */
67 ns->blksize_shift = min_t(u8,
68 file_inode(ns->file)->i_blkbits, 12);
69
70 ns->bvec_cache = kmem_cache_create("nvmet-bvec",
71 NVMET_MAX_MPOOL_BVEC * sizeof(struct bio_vec),
72 0, SLAB_HWCACHE_ALIGN, NULL);
73 if (!ns->bvec_cache) {
74 ret = -ENOMEM;
75 goto err;
76 }
77
78 ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,
79 mempool_free_slab, ns->bvec_cache);
80
81 if (!ns->bvec_pool) {
82 ret = -ENOMEM;
83 goto err;
84 }
85
86 return ret;
87 err:
88 ns->size = 0;
89 ns->blksize_shift = 0;
90 nvmet_file_ns_disable(ns);
91 return ret;
92 }
93
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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-- links below jump to the message on this page --
2021-05-12 10:13 [PATCH] nvmet: Reset ns->file when open fails Daniel Wagner
2021-05-12 12:59 ` kernel test robot
2021-05-12 13:14 ` kernel test robot
2021-05-12 14:59 ` kernel test robot
2021-05-12 15:05 ` kernel test robot
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