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[GH-ISSUE #2188] Unmounting segfault #1112

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opened 2026-03-04 01:51:29 +03:00 by kerem · 6 comments
kerem commented 2026-03-04 01:51:29 +03:00
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Originally created by @arbrebinaire on GitHub (Jun 15, 2023).
Original GitHub issue: https://github.com/s3fs-fuse/s3fs-fuse/issues/2188

Additional Information

Version of s3fs being used (s3fs --version)

V1.92 (commit:unknown) with OpenSSL

Version of fuse being used (pkg-config --modversion fuse, rpm -qi fuse or dpkg -s fuse)

Version : 2.9.7
Packager : infrastructure@rockylinux.org
Vendor : Rocky

Kernel information (uname -r)

4.18.0-425.19.2.el8_7.x86_64

GNU/Linux Distribution, if applicable (cat /etc/os-release)

NAME="Rocky Linux"
VERSION="8.8 (Green Obsidian)"
ID="rocky"
ID_LIKE="rhel centos fedora"
VERSION_ID="8.8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="Rocky Linux 8.8 (Green Obsidian)"
ANSI_COLOR="0;32"
LOGO="fedora-logo-icon"
CPE_NAME="cpe:/o:rocky:rocky:8:GA"
HOME_URL="https://rockylinux.org/"
BUG_REPORT_URL="https://bugs.rockylinux.org/"
SUPPORT_END="2029-05-31"
ROCKY_SUPPORT_PRODUCT="Rocky-Linux-8"
ROCKY_SUPPORT_PRODUCT_VERSION="8.8"
REDHAT_SUPPORT_PRODUCT="Rocky Linux"
REDHAT_SUPPORT_PRODUCT_VERSION="8.8"

How to run s3fs, if applicable

umount  "/mnt/some_mountpoint"

s3fs syslog messages (grep s3fs /var/log/syslog, journalctl | grep s3fs, or s3fs outputs)

[Wed Jun 14 21:24:40 2023] s3fs[375044]: segfault at 7f3aa13c89d0 ip 00007f3aa4fd5550 sp 00007fff47292b90 error 4 in libpthread-2.28.so[7f3aa4fcc000+1b000]
[Wed Jun 14 21:24:40 2023] Code: 48 89 7c 24 f8 64 48 8b 04 25 10 00 00 00 f0 48 0f b1 54 24 f8 c3 0f 1f 40 00 f3 0f 1e fa 41 56 41 55 41 54 55 53 48 83 ec 40 <44> 8b 87 d0 02 00 00 64 48 8b 04 25 28 00 00 00 48 89 44 24 38 31

Details about issue

The segfault happens whenever a mointpoint is unmounted. The mountpoint is properly unmounted.

Originally created by @arbrebinaire on GitHub (Jun 15, 2023). Original GitHub issue: https://github.com/s3fs-fuse/s3fs-fuse/issues/2188 <!-- -------------------------------------------------------------------------- The following information is very important in order to help us to help you. Omission of the following details may delay your support request or receive no attention at all. Keep in mind that the commands we provide to retrieve information are oriented to GNU/Linux Distributions, so you could need to use others if you use s3fs on macOS or BSD. --------------------------------------------------------------------------- --> ### Additional Information #### Version of s3fs being used (`s3fs --version`) <!-- example: V1.91 (commit:b19262a) --> V1.92 (commit:unknown) with OpenSSL #### Version of fuse being used (`pkg-config --modversion fuse`, `rpm -qi fuse` or `dpkg -s fuse`) <!-- example: 2.9.2 --> Version : 2.9.7 Packager : infrastructure@rockylinux.org Vendor : Rocky #### Kernel information (`uname -r`) <!-- example: 5.10.96-90.460.amzn2.x86_64 --> 4.18.0-425.19.2.el8_7.x86_64 #### GNU/Linux Distribution, if applicable (`cat /etc/os-release`) <!-- command result --> NAME="Rocky Linux" VERSION="8.8 (Green Obsidian)" ID="rocky" ID_LIKE="rhel centos fedora" VERSION_ID="8.8" PLATFORM_ID="platform:el8" PRETTY_NAME="Rocky Linux 8.8 (Green Obsidian)" ANSI_COLOR="0;32" LOGO="fedora-logo-icon" CPE_NAME="cpe:/o:rocky:rocky:8:GA" HOME_URL="https://rockylinux.org/" BUG_REPORT_URL="https://bugs.rockylinux.org/" SUPPORT_END="2029-05-31" ROCKY_SUPPORT_PRODUCT="Rocky-Linux-8" ROCKY_SUPPORT_PRODUCT_VERSION="8.8" REDHAT_SUPPORT_PRODUCT="Rocky Linux" REDHAT_SUPPORT_PRODUCT_VERSION="8.8" #### How to run s3fs, if applicable <!-- Describe the s3fs "command line" or "/etc/fstab" entry used. --> <!-- Executed command line or /etc/fastab entry --> ``` umount "/mnt/some_mountpoint" ``` #### s3fs syslog messages (`grep s3fs /var/log/syslog`, `journalctl | grep s3fs`, or `s3fs outputs`) <!-- if you execute s3fs with dbglevel, curldbg option, you can get detail debug messages. --> ``` [Wed Jun 14 21:24:40 2023] s3fs[375044]: segfault at 7f3aa13c89d0 ip 00007f3aa4fd5550 sp 00007fff47292b90 error 4 in libpthread-2.28.so[7f3aa4fcc000+1b000] [Wed Jun 14 21:24:40 2023] Code: 48 89 7c 24 f8 64 48 8b 04 25 10 00 00 00 f0 48 0f b1 54 24 f8 c3 0f 1f 40 00 f3 0f 1e fa 41 56 41 55 41 54 55 53 48 83 ec 40 <44> 8b 87 d0 02 00 00 64 48 8b 04 25 28 00 00 00 48 89 44 24 38 31 ``` ### Details about issue <!-- Please describe the content of the issue in detail. --> The segfault happens whenever a mointpoint is unmounted. The mountpoint is properly unmounted.
kerem closed this issue 2026-03-04 01:51:29 +03:00
kerem commented 2026-03-04 01:51:30 +03:00
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@ryanmichaelsmith commented on GitHub (Jun 16, 2023):

I'm not positive it's related, but I'm having a similar issue with v1.92. Listing the contents of the root of the mount point fails and logs a segfault in syslog. I reran under gdb looking at the curl debug messages and AWS returns a 404 which seems to result in s3fs signaling a crash.

Issue started with v1.92, didn't occur with v1.91.

<!-- gh-comment-id:1594760976 --> @ryanmichaelsmith commented on GitHub (Jun 16, 2023): I'm not positive it's related, but I'm having a similar issue with v1.92. Listing the contents of the root of the mount point fails and logs a segfault in syslog. I reran under gdb looking at the curl debug messages and AWS returns a 404 which seems to result in s3fs signaling a crash. Issue started with v1.92, didn't occur with v1.91.
kerem commented 2026-03-04 01:51:30 +03:00
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@VVoidV commented on GitHub (Jul 1, 2023):

@arbrebinaire what is your commandline para for s3fs? I found that using the "streamupload" option can cause a segfault when unmounting.

<!-- gh-comment-id:1615465727 --> @VVoidV commented on GitHub (Jul 1, 2023): @arbrebinaire what is your commandline para for s3fs? I found that using the "streamupload" option can cause a segfault when unmounting.
kerem commented 2026-03-04 01:51:30 +03:00
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@arbrebinaire commented on GitHub (Jul 1, 2023):

@arbrebinaire what is your commandline para for s3fs? I found that using the "streamupload" option can cause a segfault when unmounting.

Here is the line in fstab:
s3fs#leaf-03 /mnt/leaf-03 fuse _netdev,allow_other,use_path_request_style,url=https://node1.mys3provider.com 0 0

<!-- gh-comment-id:1615882587 --> @arbrebinaire commented on GitHub (Jul 1, 2023): > @arbrebinaire what is your commandline para for s3fs? I found that using the "streamupload" option can cause a segfault when unmounting. Here is the line in fstab: `s3fs#leaf-03 /mnt/leaf-03 fuse _netdev,allow_other,use_path_request_style,url=https://node1.mys3provider.com 0 0`
kerem commented 2026-03-04 01:51:30 +03:00
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@ggtakec commented on GitHub (Jul 2, 2023):

@VVoidV Thanks foryour kindness.

@arbrebinaire @ryanmichaelsmith
I merged the #2204 PR, then could you try latest code(current master branch)?

<!-- gh-comment-id:1616268605 --> @ggtakec commented on GitHub (Jul 2, 2023): @VVoidV Thanks foryour kindness. @arbrebinaire @ryanmichaelsmith I merged the #2204 PR, then could you try latest code(current master branch)?
kerem commented 2026-03-04 01:51:31 +03:00
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@arbrebinaire commented on GitHub (Jul 3, 2023):

Thanks! I'll have to wait until your fix is available through RockyOS which could take a little while I suppose. I'll be happy to report when this happens.

<!-- gh-comment-id:1618324513 --> @arbrebinaire commented on GitHub (Jul 3, 2023): Thanks! I'll have to wait until your fix is available through RockyOS which could take a little while I suppose. I'll be happy to report when this happens.
kerem commented 2026-03-04 01:51:31 +03:00
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@gaul commented on GitHub (Sep 8, 2023):

Please reopen if symptoms persist.

<!-- gh-comment-id:1710950525 --> @gaul commented on GitHub (Sep 8, 2023): Please reopen if symptoms persist.
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