BUG: unable to handle page fault for address: fffffbfff28616cf #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9783 Comm: syz-executor.3 Not tainted 6.3.0-rc4-syzkaller-00025-g3a93e40326c8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/17/2023 RIP: 0010:__d_entry_type include/linux/dcache.h:385 [inline] RIP: 0010:d_can_lookup include/linux/dcache.h:400 [inline] RIP: 0010:d_is_dir include/linux/dcache.h:410 [inline] RIP: 0010:do_open fs/namei.c:3536 [inline] RIP: 0010:path_openat+0xca2/0x2750 fs/namei.c:3715 Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 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 RSP: 0018:ffffc9000378f640 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: ffffffff9430b679 RCX: ffffc9000d68b000 RDX: 1ffffffff28616cf RSI: ffffffff81e6bf50 RDI: 0000000000000005 RBP: 0000000000100000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000100000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88802b933bfc R14: 00000000000280c2 R15: ffffc9000378f780 FS: 00007fa7ec14d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff28616cf CR3: 00000000201f1000 CR4: 0000000000350ee0 Call Trace: do_filp_open+0x1ba/0x410 fs/namei.c:3742 file_open_name+0x2ac/0x420 fs/open.c:1293 filp_open+0x4b/0x80 fs/open.c:1313 do_coredump+0x17e5/0x3cc0 fs/coredump.c:703 get_signal+0x1bff/0x25b0 kernel/signal.c:2845 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa7eb48c0f9 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:00007fa7ec14d168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffe5 RBX: 00007fa7eb5abf80 RCX: 00007fa7eb48c0f9 RDX: 0000000000000000 RSI: 0020000000000000 RDI: 0000000000000004 RBP: 00007fa7eb4e7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea63d6ecf R14: 00007fa7ec14d300 R15: 0000000000022000 Modules linked in: CR2: fffffbfff28616cf ---[ end trace 0000000000000000 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:385 [inline] RIP: 0010:d_can_lookup include/linux/dcache.h:400 [inline] RIP: 0010:d_is_dir include/linux/dcache.h:410 [inline] RIP: 0010:do_open fs/namei.c:3536 [inline] RIP: 0010:path_openat+0xca2/0x2750 fs/namei.c:3715 Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 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 RSP: 0018:ffffc9000378f640 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: ffffffff9430b679 RCX: ffffc9000d68b000 RDX: 1ffffffff28616cf RSI: ffffffff81e6bf50 RDI: 0000000000000005 RBP: 0000000000100000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000100000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88802b933bfc R14: 00000000000280c2 R15: ffffc9000378f780 FS: 00007fa7ec14d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff28616cf CR3: 00000000201f1000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 86 16 00 00 jne 0x1694 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 49 8b 5f 08 mov 0x8(%r15),%rbx 1c: 48 89 da mov %rbx,%rdx 1f: 48 c1 ea 03 shr $0x3,%rdx * 23: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 27: 84 c0 test %al,%al 29: 74 08 je 0x33 2b: 3c 03 cmp $0x3,%al 2d: 0f 8e 54 16 00 00 jle 0x1687 33: 8b 2b mov (%rbx),%ebp 35: bf .byte 0xbf 36: 00 00 add %al,(%rax) 38: 20 .byte 0x20