Hello,
I am running a system with a microSD card, on the top of which a dmcrypt
luks is used, and f2fs on that.
Every time I boot my system, fsck takes a fair amount of time to fix the
filesystem. Shortly after boot I can spot a f2fs_gc crash (I suppose
it's crash) in the kernel log.
[ 0.000000] CPU: 4 PID: 2286 Comm: f2fs_gc-253:6 Not tainted 4.9.4 #1
[ 0.000000] Hardware name: LENOVO 20AUA1FFPB/20AUA1FFPB, BIOS
J4ET87WW(1.87) 09/21/2016
[ 0.000000] 0000000000000000 ffffffff81452dd9 0000000000000000
0000000000000000
[ 0.000000] ffffffff810b1099 0000000000000000 ffffc90005113da0
0000000000000007
[ 0.000000] 0000000000000006 0000000000000006 ffff880213bc8000
ffffffff813ef8a3
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff81452dd9>] ? dump_stack+0x46/0x5d
[ 0.000000] [<ffffffff810b1099>] ? __warn+0xb9/0xe0
[ 0.000000] [<ffffffff813ef8a3>] ? do_garbage_collect+0xb03/0xbe0
[ 0.000000] [<ffffffff810e184b>] ? dequeue_task_fair+0x5ab/0x1300
[ 0.000000] [<ffffffff813efc1f>] ? f2fs_gc+0x15f/0x4b0
[ 0.000000] [<ffffffff813f01f7>] ? gc_thread_func+0x287/0x360
[ 0.000000] [<ffffffff8181cc63>] ? __schedule+0x173/0x5f0
[ 0.000000] [<ffffffff810ea2c0>] ? wake_atomic_t_function+0x50/0x50
[ 0.000000] [<ffffffff813eff70>] ? f2fs_gc+0x4b0/0x4b0
[ 0.000000] [<ffffffff810b558e>] ? do_group_exit+0x2e/0xa0
[ 0.000000] [<ffffffff810ccf39>] ? kthread+0xb9/0xd0
[ 0.000000] [<ffffffff810cce80>] ? kthread_park+0x50/0x50
[ 0.000000] [<ffffffff81820b12>] ? ret_from_fork+0x22/0x30
[ 0.000000] ---[ end trace c7ec9ea0d14d95b3 ]---
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 2286 at fs/f2fs/gc.c:866
do_garbage_collect+0xb03/0xbe0
[ 0.000000] Modules linked in: ctr ccm algif_skcipher af_alg
ipt_MASQUERADE iptable_nat mmc_block arc4 rtsx_pci_sdmmc mmc_core
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iwlmvm
mac80211 snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm
snd_timer iwlwifi cfg80211 rtsx_pci mfd_core coretemp kvm_intel
thinkpad_acpi snd soundcore rfkill
[ 0.000000] CPU: 0 PID: 2286 Comm: f2fs_gc-253:6 Tainted: G W
4.9.4 #1
[ 0.000000] Hardware name: LENOVO 20AUA1FFPB/20AUA1FFPB, BIOS
J4ET87WW(1.87) 09/21/2016
[ 0.000000] 0000000000000000 ffffffff81452dd9 0000000000000000
0000000000000000
[ 0.000000] ffffffff810b1099 0000000000000000 ffffc90005113da0
0000000000000008
[ 0.000000] 0000000000000007 0000000000000007 ffff880213bc8000
ffffffff813ef8a3
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff81452dd9>] ? dump_stack+0x46/0x5d
[ 0.000000] [<ffffffff810b1099>] ? __warn+0xb9/0xe0
[ 0.000000] [<ffffffff813ef8a3>] ? do_garbage_collect+0xb03/0xbe0
[ 0.000000] [<ffffffff810e184b>] ? dequeue_task_fair+0x5ab/0x1300
[ 0.000000] [<ffffffff813efc1f>] ? f2fs_gc+0x15f/0x4b0
[ 0.000000] [<ffffffff813f01f7>] ? gc_thread_func+0x287/0x360
[ 0.000000] [<ffffffff8181cc63>] ? __schedule+0x173/0x5f0
[ 0.000000] [<ffffffff810ea2c0>] ? wake_atomic_t_function+0x50/0x50
[ 0.000000] [<ffffffff813eff70>] ? f2fs_gc+0x4b0/0x4b0
[ 0.000000] [<ffffffff810b558e>] ? do_group_exit+0x2e/0xa0
[ 0.000000] [<ffffffff810ccf39>] ? kthread+0xb9/0xd0
[ 0.000000] [<ffffffff810cce80>] ? kthread_park+0x50/0x50
[ 0.000000] [<ffffffff81820b12>] ? ret_from_fork+0x22/0x30
[ 0.000000] ---[ end trace c7ec9ea0d14d95b4 ]---
I had this on kernel 4.8 and 4.9. I have another system, where I also
use f2fs over dmcrypt, but on ssd not microSD card and I see no problem
there. Could you please comment on this?
-- Piotr.
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