loop0: detected capacity change from 0 to 32768 general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 5603 Comm: syz-executor.0 Not tainted 6.2.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:dtInsertEntry.isra.0+0xef9/0x1900 fs/jfs/jfs_dtree.c:3708 Code: a8 00 00 00 c6 40 04 ff e9 4f fa ff ff 48 8b 84 24 98 00 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 26 05 00 00 RSP: 0018:ffffc9000563f420 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000003 RDX: 0000000000000001 RSI: 000000000000000d RDI: 0000000000000008 RBP: 0000000000000000 R08: ffffc9000247218a R09: ffffc90002472180 R10: ffff888073200c30 R11: 0000000000000001 R12: ffff888073200c4e R13: ffff88801b74d79a R14: 0000000000000073 R15: ffff888073200c50 FS: 00007fb2af0be700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0853800eb0 CR3: 000000001e0c6000 CR4: 0000000000350ee0 Call Trace: dtInsert+0x455/0xb40 fs/jfs/jfs_dtree.c:886 jfs_create+0x50f/0x9e0 fs/jfs/namei.c:137 lookup_open.isra.0+0xdea/0x1510 fs/namei.c:3416 open_last_lookups fs/namei.c:3484 [inline] path_openat+0x7ad/0x2280 fs/namei.c:3712 do_filp_open+0x1a5/0x3d0 fs/namei.c:3742 do_sys_openat2+0x11e/0x3f0 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1375 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb2ade8a5a9 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:00007fb2af0be168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb2adfabf80 RCX: 00007fb2ade8a5a9 RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007fb2adee5580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff543a41af R14: 00007fb2af0be300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dtInsertEntry.isra.0+0xef9/0x1900 fs/jfs/jfs_dtree.c:3708 Code: a8 00 00 00 c6 40 04 ff e9 4f fa ff ff 48 8b 84 24 98 00 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 26 05 00 00 RSP: 0018:ffffc9000563f420 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000003 RDX: 0000000000000001 RSI: 000000000000000d RDI: 0000000000000008 RBP: 0000000000000000 R08: ffffc9000247218a R09: ffffc90002472180 R10: ffff888073200c30 R11: 0000000000000001 R12: ffff888073200c4e R13: ffff88801b74d79a R14: 0000000000000073 R15: ffff888073200c50 FS: 00007fb2af0be700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0853800eb0 CR3: 000000001e0c6000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess): 0: a8 00 test $0x0,%al 2: 00 00 add %al,(%rax) 4: c6 40 04 ff movb $0xff,0x4(%rax) 8: e9 4f fa ff ff jmpq 0xfffffa5c d: 48 8b 84 24 98 00 00 mov 0x98(%rsp),%rax 14: 00 15: 48 8d 78 08 lea 0x8(%rax),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 48 89 fa mov %rdi,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 08 jg 0x40 38: 84 c0 test %al,%al 3a: 0f 85 26 05 00 00 jne 0x566