ocfs2: Unmounting device (7,6) on (node 0) Oops: general protection fault, probably for non-canonical address 0xdffffc0000000016: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000000b0-0x00000000000000b7] CPU: 1 UID: 0 PID: 7526 Comm: syz-executor Tainted: G W syzkaller #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ocfs2_ci_fully_checkpointed fs/ocfs2/journal.h:98 [inline] RIP: 0010:ocfs2_checkpoint_inode fs/ocfs2/journal.h:199 [inline] RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1222 [inline] RIP: 0010:ocfs2_evict_inode+0x26b1/0x40c0 fs/ocfs2/inode.c:1296 Code: 80 7c 25 00 00 74 08 4c 89 ff e8 1a 92 88 fe 4d 8b 27 48 81 c3 b0 00 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 f1 91 88 fe 48 8b 1b 48 c7 c7 20 3f RSP: 0018:ffffc90005a0f340 EFLAGS: 00010202 RAX: 0000000000000016 RBX: 00000000000000b0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff8b620c60 RDI: 00000000ffffffff RBP: ffffc90005a0fa70 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e3a7c7 R12: 0000000000000000 R13: 1ffff1100c4c29ba R14: 0000000000000001 R15: ffff888062614dd0 FS: 0000555561797500(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1168e9a000 CR3: 000000003b170000 CR4: 00000000003526f0 Call Trace: evict+0x501/0x9c0 fs/inode.c:810 __ocfs2_free_slot_info fs/ocfs2/slot_map.c:307 [inline] ocfs2_free_slot_info+0x79/0x260 fs/ocfs2/slot_map.c:443 ocfs2_delete_osb+0x58/0x170 fs/ocfs2/super.c:2450 ocfs2_dismount_volume+0x57a/0x8d0 fs/ocfs2/super.c:1884 generic_shutdown_super+0x135/0x2c0 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1766 deactivate_locked_super+0xb9/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1375 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/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+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f19d26cff17 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:00007fffe9645f38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f19d26cff17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffe9645ff0 RBP: 00007fffe9645ff0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffe9647080 R13: 00007f19d2751c05 R14: 0000000000038141 R15: 00007fffe96470c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_ci_fully_checkpointed fs/ocfs2/journal.h:98 [inline] RIP: 0010:ocfs2_checkpoint_inode fs/ocfs2/journal.h:199 [inline] RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1222 [inline] RIP: 0010:ocfs2_evict_inode+0x26b1/0x40c0 fs/ocfs2/inode.c:1296 Code: 80 7c 25 00 00 74 08 4c 89 ff e8 1a 92 88 fe 4d 8b 27 48 81 c3 b0 00 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 f1 91 88 fe 48 8b 1b 48 c7 c7 20 3f RSP: 0018:ffffc90005a0f340 EFLAGS: 00010202 RAX: 0000000000000016 RBX: 00000000000000b0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff8b620c60 RDI: 00000000ffffffff RBP: ffffc90005a0fa70 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e3a7c7 R12: 0000000000000000 R13: 1ffff1100c4c29ba R14: 0000000000000001 R15: ffff888062614dd0 FS: 0000555561797500(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1168e9a000 CR3: 000000003b170000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 80 7c 25 00 00 cmpb $0x0,0x0(%rbp,%riz,1) 5: 74 08 je 0xf 7: 4c 89 ff mov %r15,%rdi a: e8 1a 92 88 fe call 0xfe889229 f: 4d 8b 27 mov (%r15),%r12 12: 48 81 c3 b0 00 00 00 add $0xb0,%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 f1 91 88 fe call 0xfe889229 38: 48 8b 1b mov (%rbx),%rbx 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: c7 (bad) 3e: 20 3f and %bh,(%rdi)