general protection fault in find

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in find_entry (2) fs				1	1943d	1942d	0/26	auto-closed as invalid on 2019/06/21 12:54
upstream	general protection fault in find_entry fs				1	2312d	2308d	0/26	closed as invalid on 2018/01/30 23:29

general protection fault, probably for non-canonical address 0xe00000201ffffd40: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x00002100ffffea00-0x00002100ffffea07] CPU: 0 PID: 8428 Comm: syz-executor Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:find_entry.isra.0+0xdd/0x1e0 fs/proc/proc_sysctl.c:122 Code: 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 d1 00 00 00 49 89 dc 4d 2b 66 40 49 c1 fc 05 49 c1 e4 06 49 01 ec 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 0f 85 a0 00 00 00 49 8b 2c 24 48 89 ef e8 0c 3e fb RSP: 0018:ffffc9000167f840 EFLAGS: 00010202 RAX: 000004201ffffd40 RBX: ffff888024c40050 RCX: 0000000000000000 RDX: ffff88802530b900 RSI: ffffffff81eef73f RDI: ffff888024c40040 RBP: 00002100ffffea00 R08: 0000000000000000 R09: 0000000000000003 R10: ffffffff81eef705 R11: 0000000000000000 R12: 00002100ffffea00 R13: dffffc0000000000 R14: ffff888024c40000 R15: 0000000000000010 FS: 00000000028e9400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004af0b8 CR3: 000000001a187000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lookup_entry fs/proc/proc_sysctl.c:339 [inline] proc_sys_lookup+0x171/0x590 fs/proc/proc_sysctl.c:512 lookup_open.isra.0+0x69f/0x13d0 fs/namei.c:3193 open_last_lookups fs/namei.c:3285 [inline] path_openat+0x9af/0x27d0 fs/namei.c:3491 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x419667 Code: 25 00 00 41 00 3d 00 00 41 00 74 47 64 8b 04 25 18 00 00 00 85 c0 75 6b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 95 00 00 00 48 8b 4c 24 28 64 48 2b 0c 25 RSP: 002b:00007ffd2d55d2d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000000419667 RDX: 0000000000080001 RSI: 00000000004af1d0 RDI: 00000000ffffff9c RBP: 00000000004af1d0 R08: 0000000000000000 R09: 00007ffd2d55d2c0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080001 R13: 00007ffd2d55d370 R14: 0000000000000000 R15: 0000000000400538 Modules linked in: ---[ end trace 804386bbb2e8477f ]--- RIP: 0010:find_entry.isra.0+0xdd/0x1e0 fs/proc/proc_sysctl.c:122 Code: 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 d1 00 00 00 49 89 dc 4d 2b 66 40 49 c1 fc 05 49 c1 e4 06 49 01 ec 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 0f 85 a0 00 00 00 49 8b 2c 24 48 89 ef e8 0c 3e fb RSP: 0018:ffffc9000167f840 EFLAGS: 00010202 RAX: 000004201ffffd40 RBX: ffff888024c40050 RCX: 0000000000000000 RDX: ffff88802530b900 RSI: ffffffff81eef73f RDI: ffff888024c40040 RBP: 00002100ffffea00 R08: 0000000000000000 R09: 0000000000000003 R10: ffffffff81eef705 R11: 0000000000000000 R12: 00002100ffffea00 R13: dffffc0000000000 R14: ffff888024c40000 R15: 0000000000000010 FS: 00000000028e9400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004af0b8 CR3: 000000001a187000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400