Hi all,

I noticed on my Raspberry Pi Zero W every ~week feh was crashing. Turns out feh has signs of a memory leak? OOM kicked in. notice the rss for feh is way higher than any other application running.

$ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian

$ feh --version
feh version 3.1.3
Compile-time switches: curl exif verscmp xinerama

The command I run is:

$ export DISPLAY=:0; feh -qrYzZFD 120.0 --auto-rotate --zoom fill /home/pi/Pictures/frame/

dmesg:

[1094530.907681] feh invoked oom-killer: gfp_mask=0x400dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), order=0, oom_score_adj=0
[1094530.907714] CPU: 0 PID: 929 Comm: feh Tainted: G         C        5.4.51+ #1327
[1094530.907724] Hardware name: BCM2835
[1094530.907735] Backtrace:
[1094530.907774] [] (dump_backtrace) from [] (show_stack+0x20/0x24)
[1094530.907795]  r6:c8337100 r5:c8337100 r4:c5917e08 r3:03684efa
[1094530.907830] [] (show_stack) from [] (dump_stack+0x20/0x28)
[1094530.907858] [] (dump_stack) from [] (dump_header+0x60/0x22c)
[1094530.907877] [] (dump_header) from [] (oom_kill_process+0xac/0x33c)
[1094530.907898]  r10:000000e8 r9:ced23880 r8:c0a280b0 r7:c0a280b0 r6:c8337100 r5:c5917e08
[1094530.907907]  r4:c08e9ed0
[1094530.907924] [] (oom_kill_process) from [] (out_of_memory+0xe8/0x3f8)
[1094530.907945]  r10:000000e8 r9:ced23880 r8:c0a280b0 r7:c0a280b0 r6:c0a25028 r5:c5917e08
[1094530.907954]  r4:c0a28320
[1094530.907978] [] (out_of_memory) from [] (__alloc_pages_nodemask+0xa60/0xf08)
[1094530.907993]  r10:00000000 r9:00000000 r8:00000043 r7:c5917df8 r6:00004ca7 r5:00000000
[1094530.908003]  r4:00000000
[1094530.908039] [] (__alloc_pages_nodemask) from [] (__pte_alloc+0x34/0x1d0)
[1094530.908060]  r10:00000800 r9:c83548fc r8:00000805 r7:c83548c0 r6:c83eeaf0 r5:c83548c0
[1094530.908069]  r4:c0a25028
[1094530.908090] [] (__pte_alloc) from [] (handle_mm_fault+0x948/0x9ec)
[1094530.908107]  r10:00000800 r9:c83548fc r8:00000805 r7:c83548c0 r6:d0850840 r5:c0a477f0
[1094530.908116]  r4:c0a25028
[1094530.908147] [] (handle_mm_fault) from [] (do_page_fault+0x32c/0x3d4)
[1094530.908167]  r9:c83548fc r8:00000805 r7:c83548c0 r6:abdfe208 r5:c8337100 r4:c5917fb0
[1094530.908186] [] (do_page_fault) from [] (do_translation_fault+0xac/0xb4)
[1094530.908205]  r10:fbba8000 r9:00005100 r8:00c5387d r7:c5917fb0 r6:abdfe208 r5:00000805
[1094530.908215]  r4:00000805
[1094530.908244] [] (do_translation_fault) from [] (do_DataAbort+0x44/0xc4)
[1094530.908260]  r6:abdfe208 r5:00000805 r4:c0a2a0f4 r3:00000005
[1094530.908283] [] (do_DataAbort) from [] (__dabt_usr+0x44/0x60)
[1094530.908294] Exception stack(0xc5917fb0 to 0xc5917ff8)
[1094530.908312] 7fa0:                                     ff8f7580 af5df23c abdfe208 000003b2
[1094530.908330] 7fc0: 0cce10b8 af5db008 04458004 0000143f ab182008 00005100 fbba8000 ffffca00
[1094530.908345] 7fe0: af5d6a08 be978640 00000d7f b6c34ee8 00000010 ffffffff
[1094530.908359]  r7:00c5387d r6:ffffffff r5:00000010 r4:b6c34ee8
[1094530.908367] Mem-Info:
[1094530.908393] active_anon:27232 inactive_anon:39679 isolated_anon:0
                  active_file:35 inactive_file:32 isolated_file:0
                  unevictable:4 dirty:0 writeback:0 unstable:0
                  slab_reclaimable:2007 slab_unreclaimable:2558
                  mapped:861 shmem:2382 pagetables:966 bounce:0
                  free:19556 free_pcp:0 free_cma:15635
[1094530.908416] Node 0 active_anon:108928kB inactive_anon:158716kB active_file:140kB inactive_file:128kB unevictable:16kB isolated(anon):0kB isolated(file):0kB mapped:3444kB dirty:0kB writeback:0kB shmem:9528kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[1094530.908445] Normal free:78224kB min:16384kB low:20480kB high:24576kB active_anon:108928kB inactive_anon:158716kB active_file:140kB inactive_file:128kB unevictable:16kB writepending:0kB present:393216kB managed:378100kB mlocked:16kB kernel_stack:1232kB pagetables:3864kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:62540kB
[1094530.908453] lowmem_reserve[]: 0 0
[1094530.908471] Normal: 614*4kB (UMEC) 417*8kB (UMEC) 275*16kB (UEC) 180*32kB (UMEC) 127*64kB (UMEC) 63*128kB (UMC) 32*256kB (UMC) 14*512kB (C) 10*1024kB (C) 4*2048kB (C) 3*4096kB (C) = 78224kB
[1094530.908569] 3012 total pagecache pages
[1094530.908581] 563 pages in swap cache
[1094530.908594] Swap cache stats: add 27539, delete 26976, find 620082/620795
[1094530.908601] Free swap  = 0kB
[1094530.908610] Total swap = 102396kB
[1094530.908617] 98304 pages RAM
[1094530.908625] 0 pages HighMem/MovableOnly
[1094530.908632] 3779 pages reserved
[1094530.908640] 16384 pages cma reserved
[1094530.908647] Tasks state (memory values in pages):
[1094530.908655] [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
[1094530.908687] [     74]     0    74     8567      777    77824      135             0 systemd-journal
[1094530.908703] [    107]     0   107     4590       12    16384      197         -1000 systemd-udevd
[1094530.908723] [    214]   100   214     5599       24    24576      144             0 systemd-timesyn
[1094530.908741] [    250]     0   250      919       11    12288       42             0 alsactl
[1094530.908757] [    251]     0   251    15538      164    34816      321             0 udisksd
[1094530.908772] [    255]     0   255     6184      101    18432      107             0 rsyslogd
[1094530.908787] [    262] 65534   262     1076        5    12288       39             0 thd
[1094530.908802] [    264]     0   264     3256       48    20480      123             0 systemd-logind
[1094530.908816] [    270]   108   270     1535      135    16384       39             0 avahi-daemon
[1094530.908831] [    272]     0   272     1990       18    16384       35             0 cron
[1094530.908846] [    282]   108   282     1439        4    14336       58             0 avahi-daemon
[1094530.908861] [    283]   104   283     1690      120    14336       54          -900 dbus-daemon
[1094530.908876] [    285]     0   285     6910       26    14336        9             0 rngd
[1094530.908891] [    298]     0   298     2681       12    18432       89             0 wpa_supplicant
[1094530.908905] [    322]     0   322      704       50    10240       41             0 dhcpcd
[1094530.908920] [    347]     0   347     9876       92    28672       99             0 polkitd
[1094530.908935] [    356]     0   356     7990       62    38912      294             0 nmbd
[1094530.908950] [    365]     0   365     9675        0    40960     1299             0 unattended-upgr
[1094530.908965] [    372]     0   372      530        0    10240       29             0 hciattach
[1094530.908980] [    376]     0   376     2677       31    18432      113         -1000 sshd
[1094530.908994] [    380]     0   380     2776       59    18432      103             0 wpa_supplicant
[1094530.909009] [    389]     0   389     2448        0    16384      101             0 bluetoothd
[1094530.909024] [    404]     0   404     9774       84    28672      116             0 lightdm
[1094530.909039] [    410]     0   410     6673        0    22528      112             0 bluealsa
[1094530.909054] [    656]     0   656    33851     2364   133120     4248             0 Xorg
[1094530.909068] [    657]     0   657     1401        0    12288      107             0 login
[1094530.909083] [    681]     0   681    12086      204    55296      405             0 smbd
[1094530.909098] [    737]   111   737     3521       11    22528      140             0 exim4
[1094530.909113] [    740]     0   740    11352       50    51200      423             0 smbd-notifyd
[1094530.909128] [    741]     0   741    11353       62    51200      412             0 cleanupd
[1094530.909143] [    742]     0   742    12083       64    51200      423             0 lpqd
[1094530.909158] [    803]     0   803     8126       33    28672      181             0 lightdm
[1094530.909172] [    809]  1000   809     3678        0    22528      253             0 systemd
[1094530.909187] [    815]  1000   815     4203       36    24576      381             0 (sd-pam)
[1094530.909202] [    831]  1000   831    13826       64    45056      277             0 lxsession
[1094530.909217] [    832]  1000   832     2117        0    16384      228             0 bash
[1094530.909231] [    842]  1000   842     1631        0    16384      106             0 dbus-daemon
[1094530.909246] [    875]  1000   875     1126       10    12288       62             0 ssh-agent
[1094530.909261] [    886]  1000   886    10595        0    26624      166             0 gvfsd
[1094530.909276] [    891]  1000   891    13452        0    26624      190             0 gvfsd-fuse
[1094530.909291] [    907]  1000   907    15491       67    45056      434             0 openbox
[1094530.909305] [    908]  1000   908    11780       73    38912      204             0 lxpolkit
[1094530.909320] [    909]  1000   909    37068     1504    86016     1038             0 lxpanel
[1094530.909335] [    911]  1000   911    18003        0    55296     1146             0 pcmanfm
[1094530.909350] [    919]  1000   919     1913        0    14336       37             0 bash
[1094530.909365] [    922]  1000   922     1126        0    12288       72             0 ssh-agent
[1094530.909379] [    929]  1000   929    86450    58327   342016     9229             0 feh
[1094530.909394] [    952]  1000   952    19605       41    38912      305             0 gvfs-udisks2-vo
[1094530.909409] [    955]  1000   955     7172        0    22528      151             0 menu-cached
[1094530.909424] [    962]  1000   962     9770        0    28672      129             0 gvfs-mtp-volume
[1094530.909439] [    966]  1000   966    13490       13    38912      189             0 gvfs-afc-volume
[1094530.909454] [    971]  1000   971     9766        0    26624      124             0 gvfs-goa-volume
[1094530.909468] [    975]  1000   975    10164        0    24576      152             0 gvfs-gphoto2-vo
[1094530.909483] [    988]  1000   988    13264       33    34816      191             0 gvfsd-trash
[1094530.909500] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),task=feh,pid=929,uid=1000
[1094530.909542] Out of memory: Killed process 929 (feh) total-vm:345800kB, anon-rss:233248kB, file-rss:60kB, shmem-rss:0kB, UID:1000 pgtables:334kB oom_score_adj:0
[1094531.086376] oom_reaper: reaped process 929 (feh), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

Ta.