Re: kernel BUG at mm/swap_state.c:170!

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On Wed, 29 May 2019 at 09:05, Mikhail Gavrilov
<mikhail.v.gavrilov@xxxxxxxxx> wrote:
>
> Hi folks.
> I am observed kernel panic after update to git tag 5.2-rc2.
> This crash happens at memory pressing when swap being used.
>
> Unfortunately in journalctl saved only this:
>

Now I captured better trace.

: page:ffffd6d34dff0000 refcount:1 mapcount:1 mapping:ffff97812323a689
index:0xfecec363
: anon
: flags: 0x17fffe00080034(uptodate|lru|active|swapbacked)
: raw: 0017fffe00080034 ffffd6d34c67c508 ffffd6d3504b8d48 ffff97812323a689
: raw: 00000000fecec363 0000000000000000 0000000100000000 ffff978433ace000
: page dumped because: VM_BUG_ON_PAGE(entry != page)
: page->mem_cgroup:ffff978433ace000
: ------------[ cut here ]------------
: kernel BUG at mm/swap_state.c:170!
: invalid opcode: 0000 [#1] SMP NOPTI
: CPU: 1 PID: 221 Comm: kswapd0 Not tainted 5.2.0-0.rc2.git0.1.fc31.x86_64 #1
: Hardware name: System manufacturer System Product Name/ROG STRIX
X470-I GAMING, BIOS 2202 04/11/2019
: RIP: 0010:__delete_from_swap_cache+0x20d/0x240
: Code: 30 65 48 33 04 25 28 00 00 00 75 4a 48 83 c4 38 5b 5d 41 5c 41
5d 41 5e 41 5f c3 48 c7 c6 2f dc 0f 8a 48 89 c7 e8 93 1b fd ff <0f> 0b
48 c7 c6 a8 74 0f 8a e8 85 1b fd ff 0f 0b 48 c7 c6 a8 7d 0f
: RSP: 0018:ffffa982036e7980 EFLAGS: 00010046
: RAX: 0000000000000021 RBX: 0000000000000040 RCX: 0000000000000006
: RDX: 0000000000000000 RSI: 0000000000000086 RDI: ffff97843d657900
: RBP: 0000000000000001 R08: ffffa982036e7835 R09: 0000000000000535
: R10: ffff97845e21a46c R11: ffffa982036e7835 R12: ffff978426387120
: R13: 0000000000000000 R14: ffffd6d34dff0040 R15: ffffd6d34dff0000
: FS:  0000000000000000(0000) GS:ffff97843d640000(0000) knlGS:0000000000000000
: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
: CR2: 00002cba88ef5000 CR3: 000000078a97c000 CR4: 00000000003406e0
: Call Trace:
:  delete_from_swap_cache+0x46/0xa0
:  try_to_free_swap+0xbc/0x110
:  swap_writepage+0x13/0x70
:  pageout.isra.0+0x13c/0x350
:  shrink_page_list+0xc14/0xdf0
:  shrink_inactive_list+0x1e5/0x3c0
:  shrink_node_memcg+0x202/0x760
:  ? do_shrink_slab+0x52/0x2c0
:  shrink_node+0xe0/0x470
:  balance_pgdat+0x2d1/0x510
:  kswapd+0x220/0x420
:  ? finish_wait+0x80/0x80
:  kthread+0xfb/0x130
:  ? balance_pgdat+0x510/0x510
:  ? kthread_park+0x90/0x90
:  ret_from_fork+0x22/0x40
: Modules linked in: uinput rfcomm fuse xt_CHECKSUM xt_MASQUERADE tun
bridge stp llc nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT
ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4
xt_conntrack ebtable_nat ip6table_nat ip6table_mangle ip6table_raw
ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw
iptable_security cmac nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables bnep sunrpc vfat fat edac_mce_amd
arc4 kvm_amd rtwpci snd_hda_codec_realtek rtw88 kvm eeepc_wmi
snd_hda_codec_generic asus_wmi sparse_keymap ledtrig_audio
snd_hda_codec_hdmi video wmi_bmof mac80211 snd_hda_intel uvcvideo
snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2
irqbypass snd_usb_audio videobuf2_common snd_hda_core videodev
snd_usbmidi_lib snd_seq snd_hwdep snd_rawmidi snd_seq_device btusb
snd_pcm crct10dif_pclmul btrtl crc32_pclmul btbcm btintel bluetooth
:  cfg80211 snd_timer ghash_clmulni_intel joydev snd k10temp soundcore
media sp5100_tco ccp i2c_piix4 ecdh_generic rfkill ecc gpio_amdpt
pcc_cpufreq gpio_generic acpi_cpufreq binfmt_misc hid_logitech_hidpp
hid_logitech_dj uas usb_storage hid_sony ff_memless amdgpu
amd_iommu_v2 gpu_sched ttm drm_kms_helper igb nvme dca drm
crc32c_intel i2c_algo_bit nvme_core wmi pinctrl_amd
: ---[ end trace 3840e49b1d8d2c24 ]---


$ /usr/src/kernels/`uname -r`/scripts/faddr2line
/lib/debug/lib/modules/`uname -r`/vmlinux
__delete_from_swap_cache+0x20d
__delete_from_swap_cache+0x20d/0x240:
__delete_from_swap_cache at mm/swap_state.c:170 (discriminator 1)




--
Best Regards,
Mike Gavrilov.




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