[RESOLVED] Chrome/Chromium does not work (pread64: Input/output error (5))
wapsi
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Joined: 05 Sep 2023
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Does someone have a clue why Chrome or Chromium does not work on Liquorix kernel on my Debian 12 when I'm launching it as a normal user while they are working just fine under Debian stable/sid kernels?:

:: Code ::
user@xxx:~$ chromium
[0905/204352.786436:ERROR:process_memory_linux.cc(49)] pread64: Input/output error (5)
Bus error (core dumped)


:: Code ::
user@xxx:~$ google-chrome
[0905/204157.440930:ERROR:process_memory_linux.cc(49)] pread64: Input/output error (5)
Bus error (core dumped)


In strace, there is this happening:
:: Code ::
--- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x7fc58e200000} ---
gettid()                                = 10629
prctl(PR_GET_DUMPABLE)                  = 1 (SUID_DUMP_USER)
prctl(PR_SET_PTRACER, 10644)            = 0
rt_sigprocmask(SIG_BLOCK, [CONT], [BUS], 8) = 0
sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\1\0\0\0\1\0\0\0\250I\207\224\305\177\0\0\10\3463\0d/\0\0\0\0\0\0\0\0\0\0"..., iov_len=40}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 40
rt_sigtimedwait([CONT], [0905/204405.563561:ERROR:scoped_ptrace_attach.cc(27)] ptrace: Operation not permitted (1)
{si_signo=SIGCONT, si_code=SI_TKILL, si_pid=10644, si_uid=549401103}, {tv_sec=5, tv_nsec=0}, 8) = 18 (SIGCONT)
rt_sigprocmask(SIG_SETMASK, [BUS], NULL, 8) = 0
futex(0x2f640033e628, FUTEX_WAKE_PRIVATE, 2147483647) = 0
rt_sigaction(SIGBUS, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc592c5afd0}, NULL, 8) = 0
getpid()                                = 10629
gettid()                                = 10629
rt_tgsigqueueinfo(10629, 10629, SIGBUS, {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x7fc58e200000}) = 0
rt_sigreturn({mask=[]})                 = 140486469746688
--- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x7fc58e200000} ---
+++ killed by SIGBUS (core dumped) +++
Bus error (core dumped)


I also tried to reset Chromium settings by renaming .config/chromium => .config/chromium.bak, and starting Chromium again, but it still crashes.

Kernel version:
Linux 6.4.14-1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 6.4-18.1~bookworm (2023-09-02) x86_64 GNU/Linux

As a root user the Chromium launches OK.

I've only the following sysctl parameters applied as my /home is mounted via NFS, nothing else (and I don't believe they cause this):
:: Code ::
# NFS optimizations
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 32768 262144 16777216
net.ipv4.tcp_wmem = 32768 262144 16777216
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_timestamps = 0



Update: This is related to my NFS mount: Chromium starts OK if I symlink my ~/.config/chromium to a directory that resides on my local SSD. But I think it's still an issue with the Liquorix kernel, because Chromium works on Debian stable/sid kernels just fine, even the ~/.config/chromium directory resides on a NFS share.
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wapsi
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I created a separate issue directly to the Zen kernel GitHub page: https://github.com/zen-kernel/zen-kernel/issues/326
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damentz
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Joined: 09 Sep 2008
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I pushed out a new kernel syncing the NFS options from Arch Linux, can you try it? Should be v6.4.15 as the major+minor.
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wapsi
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:: damentz wrote ::
I pushed out a new kernel syncing the NFS options from Arch Linux, can you try it? Should be v6.4.15 as the major+minor.


Just verified that on 6.4.15-2-liquorix-amd64 the problems are gone, thank you!
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damentz
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Joined: 09 Sep 2008
Posts: 1116
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Ok great! I'll point out the config changes I made on the github issue and have Jan update Zen Kernel appropriately.

Marking as resolved.
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