overlayfs: upper fs does not support RENAME_WHITEOUT. general protection fault, probably for non-canonical address 0xdffffc00000000ba: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000005d0-0x00000000000005d7] CPU: 1 PID: 4592 Comm: syz.2.65 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:blkg_tryget_closest block/blk-cgroup.c:1842 [inline] RIP: 0010:bio_associate_blkg_from_css+0x2ab/0x9c0 block/blk-cgroup.c:1876 Code: ff df 80 3c 08 00 74 08 48 89 df e8 8f fd f2 fd 41 be d0 05 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 67 fd f2 fd bb 90 00 00 00 49 03 1e RSP: 0018:ffffc90003ddf210 EFLAGS: 00010202 RAX: 00000000000000ba RBX: ffff88807aba53c8 RCX: dffffc0000000000 RDX: ffffc9000f6ae000 RSI: 0000000000039a5f RDI: 0000000000039a60 RBP: 1ffff1100f574a81 R08: dffffc0000000000 R09: fffffbfff1ff7619 R10: fffffbfff1ff7619 R11: 1ffffffff1ff7618 R12: ffff888142599110 R13: ffff88807aba5408 R14: 00000000000005d0 R15: ffff88802976bbac FS: 00007f3b537546c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2db008 CR3: 000000001f35f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bio_associate_blkg+0x23a/0x340 block/blk-cgroup.c:1904 lbmStartIO+0x204/0x4c0 fs/jfs/jfs_logmgr.c:2130 lbmWrite+0x361/0x480 fs/jfs/jfs_logmgr.c:2079 lmGCwrite fs/jfs/jfs_logmgr.c:-1 [inline] lmNextPage+0x6ae/0xa00 fs/jfs/jfs_logmgr.c:614 lmWriteRecord+0xf9d/0x1aa0 fs/jfs/jfs_logmgr.c:537 lmLog+0x6f6/0xa30 fs/jfs/jfs_logmgr.c:314 mapLog fs/jfs/jfs_txnmgr.c:2142 [inline] txLog fs/jfs/jfs_txnmgr.c:1408 [inline] txCommit+0xe50/0x51c0 fs/jfs/jfs_txnmgr.c:1264 __jfs_xattr_set+0x10b/0x160 fs/jfs/xattr.c:943 __vfs_removexattr+0x3b7/0x3f0 fs/xattr.c:470 __vfs_removexattr_locked+0x1e4/0x230 fs/xattr.c:505 vfs_removexattr+0x7d/0x1b0 fs/xattr.c:527 ovl_do_removexattr fs/overlayfs/overlayfs.h:231 [inline] ovl_removexattr fs/overlayfs/overlayfs.h:239 [inline] ovl_make_workdir fs/overlayfs/super.c:1443 [inline] ovl_get_workdir+0x9d8/0x11a0 fs/overlayfs/super.c:1526 ovl_fill_super+0x1925/0x2ae0 fs/overlayfs/super.c:2082 mount_nodev+0x52/0xe0 fs/super.c:1446 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3025 do_mount fs/namespace.c:3368 [inline] __do_sys_mount fs/namespace.c:3576 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3553 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: 0033:0x7f3b5550dbe9 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:00007f3b53754038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3b55745090 RCX: 00007f3b5550dbe9 RDX: 0000200000000b80 RSI: 0000200000000100 RDI: 0000000000000000 RBP: 00007f3b55590e19 R08: 0000200000000180 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3b55745128 R14: 00007f3b55745090 R15: 00007fffd29bea28 Modules linked in: ---[ end trace 01ccc376df39ab36 ]--- RIP: 0010:blkg_tryget_closest block/blk-cgroup.c:1842 [inline] RIP: 0010:bio_associate_blkg_from_css+0x2ab/0x9c0 block/blk-cgroup.c:1876 Code: ff df 80 3c 08 00 74 08 48 89 df e8 8f fd f2 fd 41 be d0 05 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 67 fd f2 fd bb 90 00 00 00 49 03 1e RSP: 0018:ffffc90003ddf210 EFLAGS: 00010202 RAX: 00000000000000ba RBX: ffff88807aba53c8 RCX: dffffc0000000000 RDX: ffffc9000f6ae000 RSI: 0000000000039a5f RDI: 0000000000039a60 RBP: 1ffff1100f574a81 R08: dffffc0000000000 R09: fffffbfff1ff7619 R10: fffffbfff1ff7619 R11: 1ffffffff1ff7618 R12: ffff888142599110 R13: ffff88807aba5408 R14: 00000000000005d0 R15: ffff88802976bbac FS: 00007f3b537546c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c34c1bb CR3: 000000001f35f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) 4: 74 08 je 0xe 6: 48 89 df mov %rbx,%rdi 9: e8 8f fd f2 fd call 0xfdf2fd9d e: 41 be d0 05 00 00 mov $0x5d0,%r14d 14: 4c 03 33 add (%rbx),%r14 17: 4c 89 f0 mov %r14,%rax 1a: 48 c1 e8 03 shr $0x3,%rax 1e: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 25: fc ff df * 28: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2c: 74 08 je 0x36 2e: 4c 89 f7 mov %r14,%rdi 31: e8 67 fd f2 fd call 0xfdf2fd9d 36: bb 90 00 00 00 mov $0x90,%ebx 3b: 49 03 1e add (%r14),%rbx