general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 12401 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:dtInsertEntry+0xc83/0x1590 fs/jfs/jfs_dtree.c:3708 Code: b6 36 44 89 f6 83 e6 02 31 ff e8 b8 10 88 fe 41 83 e6 02 75 31 e8 cd 0d 88 fe 4c 8b 74 24 78 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 74 35 44 89 f1 80 e1 07 38 c1 7c 2b 4c 89 f7 e8 RSP: 0018:ffffc9000493f0a0 EFLAGS: 00010202 RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffff88807ec3bb00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000493f230 R08: ffffffff82fe7378 R09: ffffed100ea63cc4 R10: ffffed100ea63cc4 R11: 1ffff1100ea63cc3 R12: 0000000000000001 R13: ffff88807531e8b0 R14: 0000000000000008 R15: dffffc0000000000 FS: 00007f4f41094700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f56af554718 CR3: 0000000079d8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dtInsert+0xa44/0x6b80 fs/jfs/jfs_dtree.c:886 jfs_create+0x736/0xb10 fs/jfs/namei.c:137 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x12d0/0x2df0 fs/namei.c:3688 do_filp_open+0x264/0x4f0 fs/namei.c:3718 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4f3fe8b5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f4f41094168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f4f3ffabf80 RCX: 00007f4f3fe8b5a9 RDX: 00000000000026e1 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00007f4f3fee6580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe2d69f25f R14: 00007f4f41094300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dtInsertEntry+0xc83/0x1590 fs/jfs/jfs_dtree.c:3708 Code: b6 36 44 89 f6 83 e6 02 31 ff e8 b8 10 88 fe 41 83 e6 02 75 31 e8 cd 0d 88 fe 4c 8b 74 24 78 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 74 35 44 89 f1 80 e1 07 38 c1 7c 2b 4c 89 f7 e8 RSP: 0018:ffffc9000493f0a0 EFLAGS: 00010202 RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffff88807ec3bb00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000493f230 R08: ffffffff82fe7378 R09: ffffed100ea63cc4 R10: ffffed100ea63cc4 R11: 1ffff1100ea63cc3 R12: 0000000000000001 R13: ffff88807531e8b0 R14: 0000000000000008 R15: dffffc0000000000 FS: 00007f4f41094700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557b1149f160 CR3: 0000000079d8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b6 36 mov $0x36,%dh 2: 44 89 f6 mov %r14d,%esi 5: 83 e6 02 and $0x2,%esi 8: 31 ff xor %edi,%edi a: e8 b8 10 88 fe callq 0xfe8810c7 f: 41 83 e6 02 and $0x2,%r14d 13: 75 31 jne 0x46 15: e8 cd 0d 88 fe callq 0xfe880de7 1a: 4c 8b 74 24 78 mov 0x78(%rsp),%r14 1f: 49 83 c6 08 add $0x8,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 8a 04 38 mov (%rax,%r15,1),%al <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 35 je 0x67 32: 44 89 f1 mov %r14d,%ecx 35: 80 e1 07 and $0x7,%cl 38: 38 c1 cmp %al,%cl 3a: 7c 2b jl 0x67 3c: 4c 89 f7 mov %r14,%rdi 3f: e8 .byte 0xe8