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Fix RHEL5 ZVOLs #43

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behlendorf opened this issue Aug 4, 2010 · 1 comment
Closed

Fix RHEL5 ZVOLs #43

behlendorf opened this issue Aug 4, 2010 · 1 comment

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@behlendorf
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After the recent batch of ZVOL fixes I seem to have accidentally broken minor devices for RHEL5 (2.6.18). Everything works fine for RHEL6 (2.6.32) so I hadn't noticed. Anyway, I suspect this is related to adding zvol back in to the /dev/ path but it needs to be run down.

Unable to handle kernel NULL pointer dereference at 0000000000000010 RIP:
 [] create_dir+0x1d/0x1dc
<8>PGD c45a2067 PUD c5638067 PMD 0
Oops: 0000 [1] SMP
last sysfs file: /class/misc/zfs/dev
<8>Pid: 9379, comm: lt-zfs Tainted: P      2.6.18-prep #1
<8>RIP: 0010:[]  [] create_dir+0x1d/0x1dc
<8>RSP: 0018:ffff81006392fca8  EFLAGS: 00010292
<8>RAX: ffff81005eec9870 RBX: ffff81007ff61538 RCX: ffff81006392fcf8
<8>RDX: ffff81007ff61538 RSI: 0000000000000000 RDI: ffff81007ff61530
<8>RBP: ffff81006392fcd8 R08: ffffffff8033c9e8 R09: 000000000000003e
<8>R10: ffffffff804075a0 R11: 0000000000000000 R12: ffff81007ff61530
<8>R13: ffff81007ff61530 R14: ffff81006392fcf8 R15: 0000000000000000
<8>FS:  00002b69974c9c00(0000) GS:ffffffff803da000(0000) knlGS:0000000000000000
<8>CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
<8>CR2: 0000000000000010 CR3: 00000000cd03c000 CR4: 00000000000006e0
<8>Process lt-zfs (pid: 9379, threadinfo ffff81006392e000, task ffff81007e0257e0)
<8>Stack:  0000000000000000 ffff81007ff61530 ffff81007ff61340 ffff81007ff61530
<8> ffff81005eec9a00 0000000000000000 ffff81006392fd08 ffffffff80118282
<8> ffff81006392fd08 ffffffff8005a929 0000000000000000 ffff81007ff61530
<8>Call Trace:
<8> [] sysfs_create_dir+0x5a/0x78
<8> [] kobject_get+0x1a/0x21
<8> [] kobject_add+0xe7/0x1ac
<8> [] blk_register_queue+0x3f/0x86
<8> [] add_disk+0x44/0x48
<8> [] :zfs:__zvol_create_minor+0x510/0x59b
<8> [] __vmalloc_node+0x56/0x63
<8> [] :zfs:zvol_create_minor+0x64/0x98
<8> [] :zfs:zfs_ioc_create_minor+0xc/0xe
<8> [] :zfs:zfs_ioctl+0x122/0x18d
<8> [] do_ioctl+0x2a/0x77
<8> [] vfs_ioctl+0x450/0x4b1
<8> [] audit_syscall_entry+0x18b/0x1c1
<8> [] sys_ioctl+0x5f/0x82
<8> [] tracesys+0xd5/0xe0
<8>
<8>
<8>Code: 48 8b 7e 10 48 81 c7 b8 00 00 00 e8 a4 ee f4 ff fc 31 c0 48
RIP  [] create_dir+0x1d/0x1dc
<8> RSP 
CR2: 0000000000000010
@behlendorf
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Fixed by commits:
5ce3b77
dfc166d
dd11e3f

This unfortunately means we need to drop the /zvol/ component from the /dev/ path again. However, that change luckily never made it in to a real tag so no harm done. Also we must impose a rather harsh path name limit on older kernels to avoid a NULL deref. Both of these concerns are not issues for modern kernels and can be relaxed if we drop support for RHEL5.

@dswartz dswartz mentioned this issue Apr 22, 2015
Closed
akatrevorjay added a commit to akatrevorjay/zfs that referenced this issue Dec 16, 2017
@akatrevorjay
# This is a combination of 56 commits.
4ae6a0d 
# This is the 1st commit message:
Merge branch 'master' of https://github.com/zfsonlinux/zfs

* 'master' of https://github.com/zfsonlinux/zfs:
  Enable QAT support in zfs-dkms RPM

# This is the commit message openzfs#2:

Import 0.6.5.7-0ubuntu3

# This is the commit message openzfs#3:

gbp changes

# This is the commit message openzfs#4:

Bump ver

# This is the commit message openzfs#5:

-j9 baby

# This is the commit message openzfs#6:

Up

# This is the commit message openzfs#7:

Yup

# This is the commit message openzfs#8:

Add new module

# This is the commit message openzfs#9:

Up

# This is the commit message openzfs#10:

Up

# This is the commit message openzfs#11:

Bump

# This is the commit message openzfs#12:

Grr

# This is the commit message openzfs#13:

Yay

# This is the commit message openzfs#14:

Yay

# This is the commit message openzfs#15:

Yay

# This is the commit message openzfs#16:

Yay

# This is the commit message openzfs#17:

Yay

# This is the commit message openzfs#18:

Yay

# This is the commit message openzfs#19:

yay

# This is the commit message openzfs#20:

yay

# This is the commit message openzfs#21:

yay

# This is the commit message openzfs#22:

Update ppa script

# This is the commit message openzfs#23:

Update gbp conf with br changes

# This is the commit message openzfs#24:

Update gbp conf with br changes

# This is the commit message openzfs#25:

Bump

# This is the commit message openzfs#26:

No pristine

# This is the commit message openzfs#27:

Bump

# This is the commit message openzfs#28:

Lol whoops

# This is the commit message openzfs#29:

Fix name

# This is the commit message openzfs#30:

Fix name

# This is the commit message openzfs#31:

rebase

# This is the commit message openzfs#32:

Bump

# This is the commit message openzfs#33:

Bump

# This is the commit message openzfs#34:

Bump

# This is the commit message openzfs#35:

Bump

# This is the commit message openzfs#36:

ntrim

# This is the commit message openzfs#37:

Bump

# This is the commit message openzfs#38:

9

# This is the commit message openzfs#39:

Bump

# This is the commit message openzfs#40:

Bump

# This is the commit message openzfs#41:

Bump

# This is the commit message openzfs#42:

Revert "9"

This reverts commit de488f1.

# This is the commit message openzfs#43:

Bump

# This is the commit message openzfs#44:

Account for zconfig.sh being removed

# This is the commit message openzfs#45:

Bump

# This is the commit message openzfs#46:

Add artful

# This is the commit message openzfs#47:

Add in zed.d and zpool.d scripts

# This is the commit message openzfs#48:

Bump

# This is the commit message openzfs#49:

Bump

# This is the commit message openzfs#50:

Bump

# This is the commit message openzfs#51:

Bump

# This is the commit message openzfs#52:

ugh

# This is the commit message openzfs#53:

fix zed upgrade

# This is the commit message openzfs#54:

Bump

# This is the commit message openzfs#55:

conf file zed.d

# This is the commit message #56:

Bump
richardelling pushed a commit to richardelling/zfs that referenced this issue Oct 15, 2018
@vishnuitta
pool/volume create/import/destroy for uzfs (openzfs#43)
5540385 
* pool/volume create/import/destroy/export for uzfs
* testcase to do IOs on imported pools
* CLI tests for target IP address
* owning dataset in uZFS during handshake with target

Signed-off-by: Vishnu Itta <[email protected]>
shartse pushed a commit to shartse/zfs that referenced this issue May 15, 2019
@sdimitro @ahrens
Log Spacemap (openzfs#43)
b06927c 
Signed-off-by: Serapheim Dimitropoulos <[email protected]>
@green-apple-ok green-apple-ok mentioned this issue Mar 23, 2021
Closed
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@behlendorf