file operations hang

JohnnySorocil

JohnnySorocil

After some time when connecting and disconnecting USB SD card reader my system will hang on running filesystem operations.

Running lsof, fstat and df also hangs. mount works but I don't see anything unusual there.
Running shell's autocomplete also results in hang, typing ls /tmp/<tab>
df -t nonfs works.

Running truss df results in this:
Code: 
mmap(0x0,135168,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 82017014251520 (0x4a9813000000)
mprotect(0x5a77418c9000,4096,PROT_READ)          = 0 (0x0)
issetugid()                                      = 0 (0x0)
sigfastblock(0x1,0x5a77418cbba0)                 = 0 (0x0)
open("/etc/libmap.conf",O_RDONLY|O_CLOEXEC,02300030030) = 3 (0x3)
fstat(3,{ mode=-rw-r--r-- ,inode=66644,size=162,blksize=4096 }) = 0 (0x0)
read(3,"# $FreeBSD$\nincludedir /usr/loc"...,162) = 162 (0xa2)
close(3)                                         = 0 (0x0)
open("/usr/local/etc/libmap.d",O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC,0165) = 3 (0x3)
fcntl(3,F_ISUNIONSTACK,0x0)                      = 0 (0x0)
getdirentries(3,"\M-lO\0\0\0\0\0\0\^A\0\0\0\0\0\0"...,4096,{ 0x0 }) = 104 (0x68)
open("/usr/local/etc/libmap.d/mesa.conf",O_RDONLY|O_CLOEXEC,0165) = 4 (0x4)
fstat(4,{ mode=-rw-r--r-- ,inode=269780,size=38,blksize=4096 }) = 0 (0x0)
read(4,"libGLX_indirect.so.0 libGLX_mesa"...,38) = 38 (0x26)
close(4)                                         = 0 (0x0)
getdirentries(3,0x4a9813005008,4096,{ 0x10cb05a4 }) = 0 (0x0)
close(3)                                         = 0 (0x0)
open("/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,05164275674) = 3 (0x3)
read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M-Q\^A\0"...,128) = 128 (0x80)
fstat(3,{ mode=-r--r--r-- ,inode=65793,size=593,blksize=4096 }) = 0 (0x0)
pread(3,"/lib:/usr/lib:/usr/lib/compat:/u"...,465,0x80) = 465 (0x1d1)
close(3)                                         = 0 (0x0)
open("/lib/libxo.so.0",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=36724,size=117328,blksize=117760 }) = 0 (0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 60736396283904 (0x373d4b535000)
mmap(0x0,131072,PROT_NONE,MAP_GUARD,-1,0x0)      = 60736387567616 (0x373d4ace5000)
mmap(0x373d4ace5000,32768,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 60736387567616 (0x373d4ace5000)
mmap(0x373d4aced000,86016,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x7000) = 60736387600384 (0x373d4aced000)
mmap(0x373d4ad02000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1b000) = 60736387686400 (0x373d4ad02000)
mmap(0x373d4ad03000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1b000) = 60736387690496 (0x373d4ad03000)
munmap(0x373d4b535000,4096)                      = 0 (0x0)
close(3)                                         = 0 (0x0)
open("/lib/libutil.so.9",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=38804,size=80800,blksize=80896 }) = 0 (0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 60736396087296 (0x373d4b505000)
mmap(0x0,102400,PROT_NONE,MAP_GUARD,-1,0x0)      = 60736406634496 (0x373d4bf14000)
mmap(0x373d4bf14000,32768,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 60736406634496 (0x373d4bf14000)
mmap(0x373d4bf1c000,49152,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x7000) = 60736406667264 (0x373d4bf1c000)
mmap(0x373d4bf28000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x12000) = 60736406716416 (0x373d4bf28000)
mmap(0x373d4bf29000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x12000) = 60736406720512 (0x373d4bf29000)
mmap(0x373d4bf2b000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 60736406728704 (0x373d4bf2b000)
munmap(0x373d4b505000,4096)                      = 0 (0x0)
close(3)                                         = 0 (0x0)
open("/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=33672,size=1946744,blksize=131072 }) = 0 (0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 60736408834048 (0x373d4c12d000)
mmap(0x0,4194304,PROT_NONE,MAP_GUARD,-1,0x0)     = 60736411627520 (0x373d4c3d7000)
mmap(0x373d4c3d7000,540672,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 60736411627520 (0x373d4c3d7000)
mmap(0x373d4c45b000,1347584,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x83000) = 60736412168192 (0x373d4c45b000)
mmap(0x373d4c5a4000,40960,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1cb000) = 60736413515776 (0x373d4c5a4000)
mmap(0x373d4c5ae000,28672,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1d4000) = 60736413556736 (0x373d4c5ae000)
mmap(0x373d4c5b5000,2236416,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 60736413585408 (0x373d4c5b5000)
munmap(0x373d4c12d000,4096)                      = 0 (0x0)
close(3)                                         = 0 (0x0)
mprotect(0x373d4c5a4000,36864,PROT_READ)         = 0 (0x0)
mprotect(0x373d4c5a4000,36864,PROT_READ|PROT_WRITE) = 0 (0x0)
mprotect(0x373d4c5a4000,36864,PROT_READ)         = 0 (0x0)
readlink("/etc/malloc.conf",0x373d49eb3020,1024) ERR#2 'No such file or directory'
issetugid()                                      = 0 (0x0)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),-1,0x0) = 82017016348672 (0x4a9813200000)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(12),-1,0x0) = 82017018445824 (0x4a9813400000)
mmap(0x0,4194304,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),-1,0x0) = 82017020542976 (0x4a9813600000)
issetugid()                                      = 0 (0x0)
open("/usr/share/locale/en_US.UTF-8/LC_COLLATE",O_RDONLY|O_CLOEXEC,011172626130) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=37856,size=81288,blksize=81408 }) = 0 (0x0)
mmap(0x0,81288,PROT_READ,MAP_PRIVATE,3,0x0)      = 60736430501888 (0x373d4d5d7000)
close(3)                                         = 0 (0x0)
open("/usr/share/locale/en_US.UTF-8/LC_CTYPE",O_RDONLY|O_CLOEXEC,011172622670) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=41289,size=53048,blksize=53248 }) = 0 (0x0)
mmap(0x0,53048,PROT_READ,MAP_PRIVATE,3,0x0)      = 60736445263872 (0x373d4e3eb000)
close(3)                                         = 0 (0x0)
munmap(0x373d4e3eb000,53048)                     = 0 (0x0)
open("/usr/share/locale/en_US.UTF-8/LC_MONETARY",O_RDONLY|O_CLOEXEC,013720646000) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=10877,size=32,blksize=4096 }) = 0 (0x0)
read(3,"USD \n$\n.\n,\n3\n\n-\n2\n2\n1\n"...,32) = 32 (0x20)
close(3)                                         = 0 (0x0)
open("/usr/share/locale/en_US.UTF-8/LC_NUMERIC",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=7544,size=6,blksize=4096 }) = 0 (0x0)
read(3,".\n,\n3\n",6)                            = 6 (0x6)
close(3)                                         = 0 (0x0)
open("/usr/share/locale/en_US.UTF-8/LC_TIME",O_RDONLY|O_CLOEXEC,074000) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=14162,size=377,blksize=4096 }) = 0 (0x0)
read(3,"Jan\nFeb\nMar\nApr\nMay\nJun\nJu"...,377) = 377 (0x179)
close(3)                                         = 0 (0x0)
open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES",O_RDONLY|O_CLOEXEC,010325242400) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=10495,size=74,blksize=4096 }) = 0 (0x0)
read(3,"^(([yY]([eE][sS])?)|([yY]))\n^(("...,74) = 74 (0x4a)
close(3)                                         = 0 (0x0)
ioctl(1,TIOCGETA,0x373d49eb2fc0)                 = 0 (0x0)
getfsstat(0x0,0,MNT_NOWAIT)                      = 211 (0xd3)
getfsstat(0x4a9813458dc0,989168,MNT_NOWAIT)      = 210 (0xd2)

<hang>

I am using FreeBSD 14.0-RELEASE on amd64.
 
cmoerz said:
Anything in the logs? What does vmstat 1 show while this is happening?
Click to expand...
Code: 
vmstat 1
 procs    memory    page                      disks     faults       cpu
 r  b  w  avm  fre  flt  re  pi  po   fr   sr nd0 ad0   in   sy   cs us sy id
 6  2  0 728G  12G 7.9K   6   1   0 8.3K 1.2K   0   0 2341 3.3M  16K  5  4 91
 6  2  0 728G  12G 6.6K   0   0   0 5.3K 1.3K   2   0 2380 3.1M  11K  3 30 67
 4  2  0 728G  12G 8.6K   0   0   0  11K 1.3K 147   0 2454 2.4M  12K  2 25 73
 4  2  0 728G  12G 7.9K   0   0   0 8.6K 1.3K  29   0 3696 2.4M  13K  2 26 72
 3  2  0 728G  12G 4.1K   0   0   0 6.3K 1.4K   7   0 3155 2.1M  12K  2 22 76
 5  2  0 728G  12G 3.1K   0   0   0 2.5K 1.3K  46   0 5901 2.4M  17K  2 24 73
 4  2  0 728G  12G 4.5K   0   0   0 6.8K 1.3K 346   0 3951 2.1M  15K  2 24 74
 4  2  0 728G  12G  27K   0   0   0  14K 1.3K   6   0 2421 2.3M  11K  4 24 73
 6  2  0 728G  12G 1.0K   0   0   0  25K 1.3K   1   0 2442 2.2M 8.9K  2 24 74
 4  2  0 728G  12G 1.8K   0   0   0 1.5K 1.3K 104   0 2381 2.2M  11K  2 27 71
 4  2  0 728G  12G 1.0K   0   0   0 1.4K 1.3K   0   0 2277 2.2M 8.8K  2 24 74
 4  2  0 728G  12G 2.3K   0   0   0 2.7K 1.3K 256   0 2557 2.1M  11K  2 22 76
 6  2  0 728G  12G 1.2K   0   0   0 1.4K 1.3K  57   0 2392 3.4M 9.7K  5 30 65
 6  2  0 728G  12G 7.7K   0   0   0 9.4K 1.4K  18   0 2297 2.9M 9.4K  3 26 71
 4  2  0 728G  12G 1.9K   0   0   0 3.2K 1.3K   3   0 2268 2.1M 8.7K  2 21 77
 4  2  0 728G  12G 2.6K   0   0   0 1.9K 1.3K   0   0 2278 2.5M 9.2K  3 23 74
 4  2  0 728G  12G 1.3K   0   0   0 2.4K 1.3K 203   0 2536 2.1M  11K  2 21 77
 4  2  0 728G  12G  27K   0   0   0  14K 1.3K   0   0 2320 2.5M  10K  2 25 73
 4  2  0 728G  12G 1.2K   0   0   0  25K 1.3K   0   0 2301 2.5M 9.0K  2 23 74
 4  2  0 728G  12G 2.0K   0   0   0 1.5K 1.3K   0   0 2271 2.1M 8.7K  3 21 77
 4  2  0 728G  12G 1.0K   0   0   0 1.5K 1.3K   0   0 2311 2.5M 8.8K  2 23 74
 4  2  0 728G  12G 2.5K   0   0   0 1.5K 1.3K  99   0 2376 2.0M 9.4K  3 21 77
 4  2  0 728G  12G 5.7K   0   0   0 7.5K 1.3K   0   0 2274 2.5M 9.1K  2 25 73
 4  2  0 728G  12G 3.1K   0   0   0 3.5K 1.4K   0   0 2402 3.1M 9.7K  3 27 71
 4  2  0 728G  12G 2.8K   0   0   0 3.5K 1.3K   6   0 2322 2.8M  11K  4 26 70
 4  2  0 728G  12G 2.4K   0   0   0 2.2K 1.3K   0   0 2279 2.4M 9.0K  3 22 75
 5  2  0 728G  12G 1.1K   0   0   0 1.5K 1.3K 131   0 2415 2.0M  10K  3 20 77
 4  2  0 728G  12G  27K   0   0   0  14K 1.3K   0   0 2309 2.5M  11K  3 25 72
 3  2  0 728G  12G 1.2K   0   0   0  18K 1.4K   0   0 2435 2.3M 9.9K  3 21 76
 4  2  0 728G  12G 2.1K   0   0   0 9.3K 1.3K   0   0 2275 2.2M 8.9K  2 22 75
 4  2  0 728G  12G  956   0   0   0 1.5K 1.3K   0   0 2285 2.4M 9.1K  2 23 75
 6  2  0 728G  12G 1.8K   0   0   0 1.5K 1.3K   0   0 2275 2.0M 9.1K  2 21 77
 4  2  0 728G  12G 5.9K   0   0   0 7.5K 1.3K   0   0 2373 2.5M 9.5K  2 24 73
 3  2  0 728G  12G 2.9K   0   0   0 3.6K 1.4K   0   0 2309 2.1M 9.3K  2 21 76
 8  2  0 728G  12G 1.3K   0   0   0 1.5K 1.3K   0   0 2275 2.7M 9.0K  2 26 72
 5  2  0 728G  12G 2.5K   0   0   0 2.7K 1.3K   0   0 2334 3.3M 9.3K  3 29 68
 4  2  0 728G  12G 7.0K   0   0   0 3.5K 1.3K 291   0 2626 2.1M  11K  5 22 74
 5  2  0 728G  12G  27K   0   0   0  14K 1.3K   5   0 2314 2.6M  11K  4 25 71
 3  2  0 728G  12G 1.2K   0   0   0  18K 1.3K   0   0 2306 2.0M 9.4K  7 21 73
 4  2  0 728G  12G 2.9K   0   0   0  11K 1.3K   0   0 2349 2.4M 9.6K  3 23 74
 4  2  0 728G  12G 2.8K   0   0   0 4.8K 1.3K   1   0 2338 2.3M 9.4K  2 23 75
 4  2  0 728G  12G 1.9K   0   0   0 1.5K 1.4K 166   0 2457 2.1M  11K  2 21 77
 4  2  0 728G  12G 5.8K   0   0   0 7.5K 1.3K   0   0 2286 2.6M 9.1K  2 24 74
 4  2  0 728G  12G 3.0K   0   0   0 4.1K 1.3K   0   0 2294 2.0M 9.2K  2 21 77
 4  2  0 728G  12G 1.2K   0   0   0 1.4K 1.3K   0   0 2310 2.5M 9.1K  2 24 74
 5  2  0 728G  12G 2.5K   0   0   0 2.2K 1.3K   0   0 2266 2.4M 9.0K  2 24 74
 6  2  0 728G  12G 1.1K   0   0   0 1.9K 1.3K  99   0 2369 2.9M  10K  2 27 71
 3  2  0 728G  12G  28K   0   0   0  16K 1.3K   0   0 2326 2.8M  11K  3 26 71
 4  2  0 728G  12G 1.1K   0   0   0  25K 1.3K   0   0 2308 2.0M 9.2K  2 21 77
 4  2  0 728G  12G 2.0K   0   0   0 1.4K 1.3K   0   0 2280 2.5M 9.1K  2 24 74
 3  2  0 728G  12G 1.2K   0   0   0 2.2K 1.3K   0   0 2304 2.3M 9.3K  2 23 75
 4  2  0 728G  12G 2.0K   0   0   0 1.4K 1.4K 143   0 2429 2.2M  11K  2 22 76
 4  2  0 728G  12G 5.7K   0   0   0 7.4K 1.3K   0   0 2307 2.3M 9.4K  3 22 75
 4  2  0 728G  12G 2.7K   0   0   0 2.8K 1.3K   7   0 2311 2.1M 9.2K  3 21 77
 4  2  0 728G  12G 3.4K   0   0   0 2.9K 1.3K   6   0 2307 2.5M  11K  4 24 72
 3  2  0 728G  12G 1.9K   0   0   0 3.6K 1.3K   0   0 2320 2.2M 9.4K  2 22 76
 5  2  0 728G  12G 2.0K   0   0   0 1.4K 1.3K 193   0 2506 2.2M  11K  3 21 76
 5  2  0 728G  12G  26K   0   0   0  14K 1.3K   0   0 2310 3.0M  11K  3 29 69
 4  2  0 728G  12G 3.1K   0   0   0  19K 1.3K   0   0 2269 2.7M 9.2K  3 25 72

When running this dtrace -n 'syscall::getfsstat*:entry { printf("%s %s", execname, copyinstr(arg0)); }' and running df in another shell:
Code: 
dtrace: error on enabled probe ID 1 (ID 104386: syscall:freebsd:getfsstat:entry): invalid address (0x0) in action #2 at DIF offset 12
dtrace: error on enabled probe ID 1 (ID 104386: syscall:freebsd:getfsstat:entry): invalid address (0x315e31858ac0) in action #2 at DIF offset 12
  1 104386                  getfsstat:entry df

I've also noticed that pcmanfm is stuck in unkillable state;
Code: 
# killall -9 pcmanfm
# ps aux | grep pcmanfm
johnny     31762    0.0  0.2   190240  110072  -  T    13:18       0:15.66 pcmanfm -n
johnny      7048    0.0  0.1    81888   35468 39  T+   16:23       0:00.93 pcmanfm -n .

# procstat -f $(pgrep pcmanfm)
  PID COMM                FD T V FLAGS    REF  OFFSET PRO NAME
 7048 pcmanfm           text v r r-------   -       - -   /usr/local/bin/pcmanfm
 7048 pcmanfm           ctty v c rw------   -       - -   /dev/pts/39
 7048 pcmanfm            cwd v d r-------   -       - -   /mnt/local/video
 7048 pcmanfm           root v d r-------   -       - -   /
 7048 pcmanfm              0 v c rw------   6  772498 -   /dev/pts/39
 7048 pcmanfm              1 v c rw------   6  772498 -   /dev/pts/39
 7048 pcmanfm              2 v c rw------   6  772498 -   /dev/pts/39
 7048 pcmanfm              3 s - rw---n--   1       0 UDS 0 544 /tmp/.X11-unix/X0
 7048 pcmanfm              4 E - rw---n--   1       0 -   -
 7048 pcmanfm              6 p - rw------   1       0 -   -
 7048 pcmanfm              7 p - rw------   1       0 -   -
 7048 pcmanfm              8 k - rw------   1       0 -   -
 7048 pcmanfm              9 E - rw---n--   1       0 -   -
 7048 pcmanfm             10 v d r-------   2       0 -   /usr/home/johnny/.config
 7048 pcmanfm             11 v d r-------   2       0 -   /usr/local/etc/xdg
 7048 pcmanfm             12 v d r-------   2       0 -   /usr/home/johnny/.config/gtk-3.0
 7048 pcmanfm             13 v r r-------   2       0 -   /usr/home/johnny/.config/gtk-3.0/bookmarks
 7048 pcmanfm             14 v d r-------   2       0 -   /etc
 7048 pcmanfm             15 v r r-------   2       0 -   /opt/conf/host/fstab
 7048 pcmanfm             19 v d r-------   2       0 -   /etc
 7048 pcmanfm             20 v d r-------   2       0 -   /usr/home/johnny/.local/share/applications
 7048 pcmanfm             21 v d r-------   2       0 -   /usr/local/share/applications
 7048 pcmanfm             22 v d r-------   2       0 -   /usr/share
31762 pcmanfm           text v r r-------   -       - -   /usr/local/bin/pcmanfm
31762 pcmanfm            cwd v d r-------   -       - -   /usr/home/johnny
31762 pcmanfm           root v d r-------   -       - -   /
31762 pcmanfm              0 v c rw---n--  99       0 -   /dev/null
31762 pcmanfm              1 v c rw---n--  99       0 -   /dev/null
31762 pcmanfm              2 v c rw---n--  99       0 -   /dev/null
31762 pcmanfm              3 s - rw---n--   1       0 UDS 0 1184 /tmp/.X11-unix/X0
31762 pcmanfm              4 E - rw---n--   1       0 -   -
31762 pcmanfm              6 p - rw------   1       0 -   -
31762 pcmanfm              7 p - rw------   1       0 -   -
31762 pcmanfm              8 k - rw------   1       0 -   -
31762 pcmanfm              9 E - rw---n--   1       0 -   -
31762 pcmanfm             10 v d r-------   2       0 -   /usr/home/johnny/.config
31762 pcmanfm             12 v d r-------   2       0 -   /usr/home/johnny/.config/gtk-3.0
31762 pcmanfm             13 v r r-------   2       0 -   /usr/home/johnny/.config/gtk-3.0/bookmarks
31762 pcmanfm             14 v d r-------   2       0 -   /etc
31762 pcmanfm             15 v r r-------   2       0 -   /opt/conf/host/fstab
31762 pcmanfm             19 v d r-------   2       0 -   /usr/local/etc/xdg
31762 pcmanfm             20 v d r-------   2       0 -   /etc
31762 pcmanfm             21 v d r-------   2       0 -   /usr/home/johnny/.local/share/applications
31762 pcmanfm             22 v d r-------   2       0 -   /usr/local/share/applications
31762 pcmanfm             23 v d r-------   2       0 -   /usr/share

# procstat -k $(pgrep pcmanfm)
  PID    TID COMM                TDNAME              KSTACK
 7048 130697 pcmanfm             -                   mi_switch thread_suspend_switch thread_single exit1 sys_exit amd64_syscall fast_syscall_common
 7048 799729 pcmanfm             pool-pcmanfm        mi_switch sleeplk lockmgr_slock_hard VOP_LOCK1_APV _vn_lock vfs_lookup namei kern_statat sys_fstatat amd64_syscall fast_syscall_common
31762 139558 pcmanfm             -                   mi_switch thread_suspend_switch thread_single exit1 sys_exit amd64_syscall fast_syscall_common
31762 778257 pcmanfm             pool-pcmanfm        mi_switch sleeplk lockmgr_slock_hard _vn_lock vfs_lookup namei kern_statat sys_fstatat amd64_syscall fast_syscall_common

Host is on ZFS:
Code: 
# zfs-stats -A
------------------------------------------------------------------------
ZFS Subsystem Report                            Sun Jun 16 18:14:20 2024
------------------------------------------------------------------------

ARC Summary: (HEALTHY)
        Memory Throttle Count:                  0

ARC Misc:
        Deleted:                                11.55   m
        Mutex Misses:                           131.37  k
        Evict Skips:                            150.96  m

ARC Size:                               98.19%  1.96    GiB
        Target Size: (Adaptive)         100.00% 2.00    GiB
        Min Size (Hard Limit):          73.05%  1.46    GiB
        Max Size (High Water):          1:1     2.00    GiB
        Compressed Data Size:                   1.25    GiB
        Decompressed Data Size:                 1.80    GiB
        Compression Factor:                     1.44

ARC Size Breakdown:
        Recently Used Cache Size:       49.79%  1019.74 MiB
        Frequently Used Cache Size:     50.21%  1.00    GiB

ARC Hash Breakdown:
        Elements Max:                           295.67  k
        Elements Current:               42.33%  125.15  k
        Collisions:                             266.97  k
        Chain Max:                              3
        Chains:                                 854

------------------------------------------------------------------------
 
Hmm, you could be right. /bin/ls is much older than /boot/kernel/kernel. Probably failed upgrade to 14.1-RELEASE. I'll rebuild all and see if I can reproduce it.
 
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