invalid opcode in __isolate_free_page

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 3601fe43 Merge tag 'gpio-v5.1-1' of git://git.kernel.org/p..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11af8513200000
kernel config: https://syzkaller.appspot.com/x/.config?x=c1e0e0ec44d1e5ff
dashboard link: https://syzkaller.appspot.com/bug?extid=2d21adb6759ed607b7dd
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
userspace arch: amd64
CC: [ak...@linux-foundation.org arya...@virtuozzo.com
iamjoon...@lge.com linux-...@vger.kernel.org linu...@kvack.org
mgo...@techsingularity.net mho...@suse.com vba...@suse.cz]

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+2d21ad...@syzkaller.appspotmail.com

invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1044 Comm: kcompactd0 Not tainted 5.0.0+ #13
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:__isolate_free_page+0x3b8/0x4c0 mm/page_alloc.c:3010
Code: 83 c4 20 44 89 e1 b8 01 00 00 00 5b 48 d3 e0 41 5c 41 5d 41 5e 41 5f
5d c3 48 c7 c6 40 fe 71 87 4c 89 ff e8 3a ff 0b 00 0f 0b <0f> 0b 48 c7 c6
40 fa 71 87 4c 89 ff e8 27 ff 0b 00 0f 0b 48 8b 7d
RSP: 0018:ffff8880a86ff850 EFLAGS: 00010007
RAX: 0000000000000000 RBX: ffffea000121a608 RCX: dffffc0000000000
RDX: 1ffff11025fff916 RSI: 0000000000000005 RDI: ffff88812fffc880
RBP: ffff8880a86ff898 R08: ffff8880a8052040 R09: ffffed10150dff02
R10: ffffed10150dff01 R11: 0000000000000003 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000001 R15: ffff88812fffc880
FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30724000 CR3: 00000000a0b41000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
fast_isolate_freepages mm/compaction.c:1358 [inline]
isolate_freepages mm/compaction.c:1431 [inline]
compaction_alloc+0xa9b/0x2290 mm/compaction.c:1543
unmap_and_move mm/migrate.c:1175 [inline]
migrate_pages+0x484/0x2cd0 mm/migrate.c:1426
compact_zone+0x1b56/0x38d0 mm/compaction.c:2174
kcompactd_do_work+0x303/0xaa0 mm/compaction.c:2555
kcompactd+0x247/0x890 mm/compaction.c:2648
kthread+0x357/0x430 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace c818aa08f653e22f ]---
RIP: 0010:__isolate_free_page+0x3b8/0x4c0 mm/page_alloc.c:3010
Code: 83 c4 20 44 89 e1 b8 01 00 00 00 5b 48 d3 e0 41 5c 41 5d 41 5e 41 5f
5d c3 48 c7 c6 40 fe 71 87 4c 89 ff e8 3a ff 0b 00 0f 0b <0f> 0b 48 c7 c6
40 fa 71 87 4c 89 ff e8 27 ff 0b 00 0f 0b 48 8b 7d
RSP: 0018:ffff8880a86ff850 EFLAGS: 00010007
RAX: 0000000000000000 RBX: ffffea000121a608 RCX: dffffc0000000000
RDX: 1ffff11025fff916 RSI: 0000000000000005 RDI: ffff88812fffc880
RBP: ffff8880a86ff898 R08: ffff8880a8052040 R09: ffffed10150dff02
R10: ffffed10150dff01 R11: 0000000000000003 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000000000001 R15: ffff88812fffc880
FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30724000 CR3: 00000000a0b41000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.