loop0: detected capacity change from 0 to 32768 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 6342 Comm: syz-executor.0 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:jfs_statfs+0x147/0x510 fs/jfs/super.c:128 Code: 74 24 18 49 81 c6 a0 00 00 00 4d 89 f7 49 c1 ef 03 43 80 3c 27 00 74 08 4c 89 f7 e8 f3 b9 d9 fe 49 8b 2e 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 da b9 d9 fe 48 8b 5d 00 49 8d 6d RSP: 0018:ffffc90004effbe8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc90004effe08 RCX: ffff888057155a00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffff83299606 R09: 0000000000000000 R10: ffffc90004effb40 R11: ffffffff83299550 R12: dffffc0000000000 R13: ffffc90004effe00 R14: ffff8880278c0aa0 R15: 1ffff11004f18154 FS: 00007f6fb97256c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc6df9ed000 CR3: 000000007d7a6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: statfs_by_dentry fs/statfs.c:66 [inline] vfs_statfs fs/statfs.c:90 [inline] user_statfs+0x213/0x460 fs/statfs.c:105 __do_sys_statfs fs/statfs.c:193 [inline] __se_sys_statfs fs/statfs.c:190 [inline] __x64_sys_statfs+0xe8/0x1a0 fs/statfs.c:190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6fb8a7dca9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6fb97250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000089 RAX: ffffffffffffffda RBX: 00007f6fb8babf80 RCX: 00007f6fb8a7dca9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00007f6fb8ac947e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6fb8babf80 R15: 00007ffd55f860a8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jfs_statfs+0x147/0x510 fs/jfs/super.c:128 Code: 74 24 18 49 81 c6 a0 00 00 00 4d 89 f7 49 c1 ef 03 43 80 3c 27 00 74 08 4c 89 f7 e8 f3 b9 d9 fe 49 8b 2e 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 da b9 d9 fe 48 8b 5d 00 49 8d 6d RSP: 0018:ffffc90004effbe8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc90004effe08 RCX: ffff888057155a00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffff83299606 R09: 0000000000000000 R10: ffffc90004effb40 R11: ffffffff83299550 R12: dffffc0000000000 R13: ffffc90004effe00 R14: ffff8880278c0aa0 R15: 1ffff11004f18154 FS: 00007f6fb97256c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0a8a71270 CR3: 000000007d7a6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 24 18 and $0x18,%al 2: 49 81 c6 a0 00 00 00 add $0xa0,%r14 9: 4d 89 f7 mov %r14,%r15 c: 49 c1 ef 03 shr $0x3,%r15 10: 43 80 3c 27 00 cmpb $0x0,(%r15,%r12,1) 15: 74 08 je 0x1f 17: 4c 89 f7 mov %r14,%rdi 1a: e8 f3 b9 d9 fe call 0xfed9ba12 1f: 49 8b 2e mov (%r14),%rbp 22: 48 89 e8 mov %rbp,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 ef mov %rbp,%rdi 33: e8 da b9 d9 fe call 0xfed9ba12 38: 48 8b 5d 00 mov 0x0(%rbp),%rbx 3c: 49 rex.WB 3d: 8d .byte 0x8d 3e: 6d insl (%dx),%es:(%rdi)