ocfs2: Unmounting device (7,6) on (node local) Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 29050 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-00199-gdfd4b508c8c6 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ocfs2_clear_inode+0x56e/0x1540 fs/ocfs2/inode.c:1284 Code: 48 c1 ea 03 80 3c 02 00 0f 85 c0 08 00 00 48 8b 9d 90 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 88 08 00 00 48 8b 7b 08 e8 af 59 e3 fe 48 8b 4c RSP: 0018:ffffc900047c7898 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83abb30b RDX: 0000000000000001 RSI: ffff88804a180d00 RDI: 0000000000000008 RBP: ffff88804ebe4000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804a180000 R13: ffff88804a180760 R14: ffff88804a180810 R15: 0000000000000000 FS: 00005555605e1500(0000) GS:ffff8881246bd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f97e8f29f98 CR3: 00000000672de000 CR4: 0000000000350ef0 Call Trace: ocfs2_evict_inode+0x8fb/0x1680 fs/ocfs2/inode.c:1296 evict+0x3e6/0x920 fs/inode.c:810 iput_final fs/inode.c:1897 [inline] iput fs/inode.c:1923 [inline] iput+0x521/0x880 fs/inode.c:1909 __ocfs2_free_slot_info.part.0+0x3e/0x210 fs/ocfs2/slot_map.c:307 __ocfs2_free_slot_info fs/ocfs2/slot_map.c:304 [inline] ocfs2_free_slot_info+0x47/0x60 fs/ocfs2/slot_map.c:443 ocfs2_delete_osb+0x52/0x1f0 fs/ocfs2/super.c:2450 ocfs2_dismount_volume+0x445/0xa00 fs/ocfs2/super.c:1884 generic_shutdown_super+0x156/0x390 fs/super.c:643 kill_block_super+0x3b/0x90 fs/super.c:1766 deactivate_locked_super+0xc1/0x1a0 fs/super.c:474 deactivate_super fs/super.c:507 [inline] deactivate_super+0xde/0x100 fs/super.c:503 cleanup_mnt+0x225/0x450 fs/namespace.c:1378 task_work_run+0x150/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xeb/0x110 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x3f6/0x4c0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6dc978ff17 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffe172e29c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f6dc9811c05 RCX: 00007f6dc978ff17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe172e2a80 RBP: 00007ffe172e2a80 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe172e3b10 R13: 00007f6dc9811c05 R14: 00000000002c2448 R15: 00007ffe172e3b50 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_clear_inode+0x56e/0x1540 fs/ocfs2/inode.c:1284 Code: 48 c1 ea 03 80 3c 02 00 0f 85 c0 08 00 00 48 8b 9d 90 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 88 08 00 00 48 8b 7b 08 e8 af 59 e3 fe 48 8b 4c RSP: 0018:ffffc900047c7898 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83abb30b RDX: 0000000000000001 RSI: ffff88804a180d00 RDI: 0000000000000008 RBP: ffff88804ebe4000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804a180000 R13: ffff88804a180760 R14: ffff88804a180810 R15: 0000000000000000 FS: 00005555605e1500(0000) GS:ffff8881247bd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c34eac4 CR3: 00000000672de000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 c0 08 00 00 jne 0x8ce e: 48 8b 9d 90 02 00 00 mov 0x290(%rbp),%rbx 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 8d 7b 08 lea 0x8(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 88 08 00 00 jne 0x8bc 34: 48 8b 7b 08 mov 0x8(%rbx),%rdi 38: e8 af 59 e3 fe call 0xfee359ec 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 4c rex.WR