overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. Oops: general protection fault, probably for non-canonical address 0xdffffc0020000008: 0000 [#1] SMP KASAN PTI KASAN: probably user-memory-access in range [0x0000000100000040-0x0000000100000047] CPU: 0 UID: 0 PID: 5956 Comm: syz.3.4 Tainted: G W 6.17.0-rc2-syzkaller #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:rq_list_pop include/linux/blk-mq.h:267 [inline] RIP: 0010:blk_mq_issue_direct+0x7b/0x660 block/blk-mq.c:2792 Code: c1 e8 03 48 89 44 24 30 c7 44 24 04 00 00 00 00 4c 89 64 24 20 4c 89 6c 24 18 49 8d 5e 48 48 89 d8 48 c1 e8 03 48 89 44 24 28 <42> 80 3c 38 00 74 08 48 89 df e8 e6 65 82 fd 48 89 5c 24 10 48 8b RSP: 0018:ffffc900051fe1d8 EFLAGS: 00010203 RAX: 0000000020000008 RBX: 0000000100000047 RCX: 0000000000080000 RDX: ffffc9000e14b000 RSI: 0000000000005e7f RDI: 0000000000005e80 RBP: ffff888024702800 R08: ffff888026f05940 R09: 0000000000000003 R10: 0000000000000100 R11: 000000000000000d R12: ffffc900051fe500 R13: 1ffff92000a3fca0 R14: 00000000ffffffff R15: dffffc0000000000 FS: 00007f5f8bcae6c0(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557d19b688 CR3: 000000003a490000 CR4: 00000000003526f0 Call Trace: blk_mq_dispatch_queue_requests+0x6fe/0x800 block/blk-mq.c:2878 blk_mq_flush_plug_list+0x432/0x550 block/blk-mq.c:2961 __blk_flush_plug+0x3d3/0x4b0 block/blk-core.c:1220 blk_finish_plug block/blk-core.c:1247 [inline] __submit_bio+0x2d3/0x5a0 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x4f2/0xbb0 block/blk-core.c:751 submit_bh fs/buffer.c:2829 [inline] __sync_dirty_buffer+0x22e/0x370 fs/buffer.c:2867 ntfs_write_bh+0x58b/0x740 fs/ntfs3/fsntfs.c:1461 mi_write+0x84/0x1b0 fs/ntfs3/record.c:402 indx_update_dup+0x584/0x730 fs/ntfs3/index.c:2705 ni_update_parent+0x9e7/0xdd0 fs/ntfs3/frecord.c:3182 ni_write_inode+0x944/0xfb0 fs/ntfs3/frecord.c:3277 write_inode fs/fs-writeback.c:1525 [inline] __writeback_single_inode+0x6f4/0x1000 fs/fs-writeback.c:1745 writeback_single_inode+0x1d5/0x640 fs/fs-writeback.c:1801 sync_inode_metadata+0xb9/0x110 fs/fs-writeback.c:2883 __generic_file_fsync+0x142/0x1b0 fs/libfs.c:1550 generic_file_fsync+0x6f/0xf0 fs/libfs.c:1580 ovl_sync_file+0x3a/0x50 fs/overlayfs/copy_up.c:254 ovl_copy_up_metadata+0x831/0xb60 fs/overlayfs/copy_up.c:725 ovl_copy_up_workdir fs/overlayfs/copy_up.c:821 [inline] ovl_do_copy_up fs/overlayfs/copy_up.c:1001 [inline] ovl_copy_up_one fs/overlayfs/copy_up.c:1202 [inline] ovl_copy_up_flags+0x160c/0x2fe0 fs/overlayfs/copy_up.c:1257 ovl_open+0x13e/0x2f0 fs/overlayfs/file.c:211 do_dentry_open+0x9ae/0x1350 fs/open.c:965 vfs_open+0x3b/0x350 fs/open.c:1095 do_open fs/namei.c:3887 [inline] path_openat+0x2ef1/0x3840 fs/namei.c:4046 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1461 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5f8da4ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5f8bcae038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f5f8dc75fa0 RCX: 00007f5f8da4ebe9 RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c RBP: 00007f5f8dad1e19 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5f8dc76038 R14: 00007f5f8dc75fa0 R15: 00007ffca5faeb88 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rq_list_pop include/linux/blk-mq.h:267 [inline] RIP: 0010:blk_mq_issue_direct+0x7b/0x660 block/blk-mq.c:2792 Code: c1 e8 03 48 89 44 24 30 c7 44 24 04 00 00 00 00 4c 89 64 24 20 4c 89 6c 24 18 49 8d 5e 48 48 89 d8 48 c1 e8 03 48 89 44 24 28 <42> 80 3c 38 00 74 08 48 89 df e8 e6 65 82 fd 48 89 5c 24 10 48 8b RSP: 0018:ffffc900051fe1d8 EFLAGS: 00010203 RAX: 0000000020000008 RBX: 0000000100000047 RCX: 0000000000080000 RDX: ffffc9000e14b000 RSI: 0000000000005e7f RDI: 0000000000005e80 RBP: ffff888024702800 R08: ffff888026f05940 R09: 0000000000000003 R10: 0000000000000100 R11: 000000000000000d R12: ffffc900051fe500 R13: 1ffff92000a3fca0 R14: 00000000ffffffff R15: dffffc0000000000 FS: 00007f5f8bcae6c0(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557d19b688 CR3: 000000003a490000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 48 89 44 24 30 mov %rax,0x30(%rsp) 8: c7 44 24 04 00 00 00 movl $0x0,0x4(%rsp) f: 00 10: 4c 89 64 24 20 mov %r12,0x20(%rsp) 15: 4c 89 6c 24 18 mov %r13,0x18(%rsp) 1a: 49 8d 5e 48 lea 0x48(%r14),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 48 89 44 24 28 mov %rax,0x28(%rsp) * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 e6 65 82 fd call 0xfd82661f 39: 48 89 5c 24 10 mov %rbx,0x10(%rsp) 3e: 48 rex.W 3f: 8b .byte 0x8b