loop0: detected capacity change from 0 to 32768 XFS (loop0): Mounting V5 Filesystem XFS (loop0): Ending clean mount XFS (loop0): Quotacheck needed: Please wait. XFS (loop0): Quotacheck: Done. 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: 4563 Comm: syz-executor.0 Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:xfs_free_extent_fix_freelist fs/xfs/libxfs/xfs_alloc.c:3304 [inline] RIP: 0010:__xfs_free_extent+0x155/0x4b0 fs/xfs/libxfs/xfs_alloc.c:3353 Code: 12 48 89 ef e8 8c 4f e6 fe 48 ba 00 00 00 00 00 fc ff df 4c 8b 75 00 4c 89 74 24 40 4c 89 e7 48 83 c7 08 48 89 f8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 ac 02 00 00 41 8b 5c 24 08 89 5c 24 60 4c RSP: 0018:ffffc90002e7f578 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 000000000000000c RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: ffff88802a692158 R08: dffffc0000000000 R09: ffffc90002e7f5c0 R10: fffff520005cfec8 R11: 1ffff920005cfeb8 R12: 0000000000000000 R13: 00000000fffff000 R14: ffff88807b7fa000 R15: 0000000000000001 FS: 00007fa1f8a1a6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005568d1be6660 CR3: 0000000079970000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: xfs_free_extent fs/xfs/libxfs/xfs_alloc.h:186 [inline] xfs_ag_extend_space+0x347/0x4e0 fs/xfs/libxfs/xfs_ag.c:931 xfs_growfs_data_private fs/xfs/xfs_fsops.c:148 [inline] xfs_growfs_data+0x8a0/0xea0 fs/xfs/xfs_fsops.c:295 xfs_file_ioctl+0x1084/0x1520 fs/xfs/xfs_ioctl.c:2131 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fa1f9698b29 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:00007fa1f8a1a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa1f97b7f80 RCX: 00007fa1f9698b29 RDX: 0000000020000540 RSI: 000000004010586e RDI: 0000000000000004 RBP: 00007fa1f96e447a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa1f97b7f80 R15: 00007ffe334002f8 Modules linked in: ---[ end trace ead41a595214c128 ]--- RIP: 0010:xfs_free_extent_fix_freelist fs/xfs/libxfs/xfs_alloc.c:3304 [inline] RIP: 0010:__xfs_free_extent+0x155/0x4b0 fs/xfs/libxfs/xfs_alloc.c:3353 Code: 12 48 89 ef e8 8c 4f e6 fe 48 ba 00 00 00 00 00 fc ff df 4c 8b 75 00 4c 89 74 24 40 4c 89 e7 48 83 c7 08 48 89 f8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 ac 02 00 00 41 8b 5c 24 08 89 5c 24 60 4c RSP: 0018:ffffc90002e7f578 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 000000000000000c RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: ffff88802a692158 R08: dffffc0000000000 R09: ffffc90002e7f5c0 R10: fffff520005cfec8 R11: 1ffff920005cfeb8 R12: 0000000000000000 R13: 00000000fffff000 R14: ffff88807b7fa000 R15: 0000000000000001 FS: 00007fa1f8a1a6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560bd3f62138 CR3: 0000000079970000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 12 48 89 adc -0x77(%rax),%cl 3: ef out %eax,(%dx) 4: e8 8c 4f e6 fe call 0xfee64f95 9: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 10: fc ff df 13: 4c 8b 75 00 mov 0x0(%rbp),%r14 17: 4c 89 74 24 40 mov %r14,0x40(%rsp) 1c: 4c 89 e7 mov %r12,%rdi 1f: 48 83 c7 08 add $0x8,%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 ac 02 00 00 jne 0x2e2 36: 41 8b 5c 24 08 mov 0x8(%r12),%ebx 3b: 89 5c 24 60 mov %ebx,0x60(%rsp) 3f: 4c rex.WR