general protection fault in find_vma

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: c37da90e Linux 4.19.143
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13ab2335900000
kernel config: https://syzkaller.appspot.com/x/.config?x=d162ec57805c4e4d
dashboard link: https://syzkaller.appspot.com/bug?extid=8f6bc2aa0f64d4883752
compiler: gcc (GCC) 10.1.0-syz 20200507

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8f6bc2...@syzkaller.appspotmail.com

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 23988 Comm: syz-executor.1 Not tainted 4.19.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_vma+0xdc/0x180 mm/mmap.c:2203
Code: 03 42 80 3c 30 00 0f 85 a0 00 00 00 48 8b 5b 10 e8 19 96 d4 ff 48 85 db 74 4c e8 0f 96 d4 ff 48 8d 7b e8 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 75 60 4c 8b 6b e8 48 89 ee 4c 89 ef e8 fe 96 d4 ff
RSP: 0000:ffff88821428fe48 EFLAGS: 00010202
RAX: 0000ee000000edfd RBX: 0007700000077000 RCX: ffffffff81951be2
RDX: 0000000000000000 RSI: ffffffff81951bc1 RDI: 0007700000076fe8
RBP: 0000001b31d20000 R08: 00000000362e6596 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000000 R12: ffff88804c73f460
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000002e65940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d20000 CR3: 00000002144bf000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__do_page_fault+0x41d/0xde0 arch/x86/mm/fault.c:1358
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205
RIP: 0033:0x403837
Code: 00 00 00 48 83 ec 08 48 8b 15 65 03 2a 01 48 8b 05 56 03 2a 01 48 39 d0 48 8d 8a 00 00 00 01 72 17 48 39 c8 73 12 48 8d 50 04 <89> 38 48 89 15 38 03 2a 01 48 83 c4 08 c3 48 89 c6 bf b8 1a 4d 00
RSP: 002b:00007fff294cc1c0 EFLAGS: 00010287
RAX: 0000001b31d20000 RBX: 0000000000000000 RCX: 0000001b32d20000
RDX: 0000001b31d20004 RSI: 00007fff294cbf90 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000075 R11: 0000000000000000 R12: 0000000000000001
R13: 00007fff294cc3c0 R14: 0000000000000000 R15: 00007fff294cc3d0
Modules linked in:
---[ end trace 8316228dbfbc6c38 ]---
RIP: 0010:find_vma+0xdc/0x180 mm/mmap.c:2203
Code: 03 42 80 3c 30 00 0f 85 a0 00 00 00 48 8b 5b 10 e8 19 96 d4 ff 48 85 db 74 4c e8 0f 96 d4 ff 48 8d 7b e8 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 75 60 4c 8b 6b e8 48 89 ee 4c 89 ef e8 fe 96 d4 ff
RSP: 0000:ffff88821428fe48 EFLAGS: 00010202
RAX: 0000ee000000edfd RBX: 0007700000077000 RCX: ffffffff81951be2
RDX: 0000000000000000 RSI: ffffffff81951bc1 RDI: 0007700000076fe8
RBP: 0000001b31d20000 R08: 00000000362e6596 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000000 R12: ffff88804c73f460
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000002e65940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d20000 CR3: 00000002144bf000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


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[syzbot]

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