BUG: unable to handle page fault for address: fffffffffff8a2a4 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD c572067 P4D c572067 PUD c574067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 20939 Comm: syz-executor.2 Not tainted 6.4.0-rc5-syzkaller-00016-ga4d7d7011219 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:d_is_dir include/linux/dcache.h:410 [inline] RIP: 0010:do_open fs/namei.c:3612 [inline] RIP: 0010:path_openat+0xcb2/0x2750 fs/namei.c:3791 Code: 85 86 16 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 08 48 89 da 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 54 16 00 00 <8b> 2b bf 00 00 20 00 81 e5 00 00 60 00 89 ee e8 0a f6 9a ff 81 fd RSP: 0018:ffffc90005b37af8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: fffffffffff8a2a4 RCX: ffffc9000cbe0000 RDX: 1fffffffffff1454 RSI: ffffffff81e86d20 RDI: 0000000000000005 RBP: 0000000000100000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000083 R12: dffffc0000000000 R13: ffff888075ed5dbc R14: 000000000014f042 R15: ffffc90005b37c38 FS: 00007fc7e2062700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffff8a2a4 CR3: 00000000285c7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0x1ba/0x410 fs/namei.c:3818 do_sys_openat2+0x16d/0x4c0 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_open fs/open.c:1380 [inline] __se_sys_open fs/open.c:1376 [inline] __x64_sys_open+0x11d/0x1c0 fs/open.c:1376 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc7e128c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc7e2062168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fc7e13ac050 RCX: 00007fc7e128c169 RDX: 0000000000000000 RSI: 0000000000147042 RDI: 0000000020000040 RBP: 00007fc7e12e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc97967eaf R14: 00007fc7e2062300 R15: 0000000000022000 Modules linked in: CR2: fffffffffff8a2a4 ---[ end trace 0000000000000000 ]--- RIP: 0010:d_is_dir include/linux/dcache.h:410 [inline] RIP: 0010:do_open fs/namei.c:3612 [inline] RIP: 0010:path_openat+0xcb2/0x2750 fs/namei.c:3791 Code: 85 86 16 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 08 48 89 da 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 54 16 00 00 <8b> 2b bf 00 00 20 00 81 e5 00 00 60 00 89 ee e8 0a f6 9a ff 81 fd RSP: 0018:ffffc90005b37af8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: fffffffffff8a2a4 RCX: ffffc9000cbe0000 RDX: 1fffffffffff1454 RSI: ffffffff81e86d20 RDI: 0000000000000005 RBP: 0000000000100000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000083 R12: dffffc0000000000 R13: ffff888075ed5dbc R14: 000000000014f042 R15: ffffc90005b37c38 FS: 00007fc7e2062700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffff8a2a4 CR3: 00000000285c7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 86 16 xchg %dl,(%rsi) 2: 00 00 add %al,(%rax) 4: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax b: fc ff df e: 49 8b 5f 08 mov 0x8(%r15),%rbx 12: 48 89 da mov %rbx,%rdx 15: 48 c1 ea 03 shr $0x3,%rdx 19: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 1d: 84 c0 test %al,%al 1f: 74 08 je 0x29 21: 3c 03 cmp $0x3,%al 23: 0f 8e 54 16 00 00 jle 0x167d * 29: 8b 2b mov (%rbx),%ebp <-- trapping instruction 2b: bf 00 00 20 00 mov $0x200000,%edi 30: 81 e5 00 00 60 00 and $0x600000,%ebp 36: 89 ee mov %ebp,%esi 38: e8 0a f6 9a ff callq 0xff9af647 3d: 81 .byte 0x81 3e: fd std