RBP: 00007ffc6312dab0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc6312eb30 R13: 00007fc0479f15fc R14: 0000000000044f12 R15: 00007ffc6312eb70 ocfs2: Unmounting device (7,3) on (node local) Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 8245 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:ocfs2_clear_inode+0x571/0x1430 fs/ocfs2/inode.c:1208 Code: 48 c1 ea 03 80 3c 02 00 0f 85 b7 07 00 00 49 8b 9e 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 d9 07 00 00 48 8b 7b 08 e8 7c 7b f7 fe 48 8b 4c RSP: 0018:ffffc90002fdf890 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff836d638d RDX: 0000000000000001 RSI: ffff888079b6d440 RDI: 0000000000000008 RBP: ffff888079b6cf50 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888079b6cea0 R13: 0000000000000000 R14: ffff88802a14c000 R15: ffff888079b6cb38 FS: 00005555850a7500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562453259680 CR3: 000000005e430000 CR4: 0000000000350ef0 Call Trace: ocfs2_evict_inode+0x8d6/0x15d0 fs/ocfs2/inode.c:1220 evict+0x40c/0x970 fs/inode.c:725 iput_final fs/inode.c:1877 [inline] iput fs/inode.c:1903 [inline] iput+0x530/0x890 fs/inode.c:1889 __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:2502 ocfs2_dismount_volume+0x442/0xa00 fs/ocfs2/super.c:1936 generic_shutdown_super+0x15f/0x3d0 fs/super.c:642 kill_block_super+0x3b/0x90 fs/super.c:1710 deactivate_locked_super+0xc1/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 cleanup_mnt+0x222/0x450 fs/namespace.c:1373 task_work_run+0x151/0x250 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc04797fa47 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:00007ffc6312d9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc04797fa47 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc6312dab0 RBP: 00007ffc6312dab0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc6312eb30 R13: 00007fc0479f15fc R14: 0000000000044f12 R15: 00007ffc6312eb70 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_clear_inode+0x571/0x1430 fs/ocfs2/inode.c:1208 Code: 48 c1 ea 03 80 3c 02 00 0f 85 b7 07 00 00 49 8b 9e 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 d9 07 00 00 48 8b 7b 08 e8 7c 7b f7 fe 48 8b 4c RSP: 0018:ffffc90002fdf890 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff836d638d RDX: 0000000000000001 RSI: ffff888079b6d440 RDI: 0000000000000008 RBP: ffff888079b6cf50 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888079b6cea0 R13: 0000000000000000 R14: ffff88802a14c000 R15: ffff888079b6cb38 FS: 00005555850a7500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f8a5916131 CR3: 000000005e430000 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 b7 07 00 00 jne 0x7c5 e: 49 8b 9e 90 02 00 00 mov 0x290(%r14),%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 d9 07 00 00 jne 0x80d 34: 48 8b 7b 08 mov 0x8(%rbx),%rdi 38: e8 7c 7b f7 fe call 0xfef77bb9 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 4c rex.WR