Unable to handle kernel paging request at virtual address dfff80000000000d KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff80000000000d] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 5897 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 00401005 (nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : d_really_is_negative include/linux/dcache.h:478 [inline] pc : open_xa_root fs/reiserfs/xattr.c:125 [inline] pc : open_xa_dir+0xf8/0x578 fs/reiserfs/xattr.c:153 lr : open_xa_dir+0x9c/0x578 fs/reiserfs/xattr.c:151 sp : ffff80009c187520 x29: ffff80009c1875a0 x28: 000000000000000d x27: dfff800000000000 x26: ffff700013830ea4 x25: 0000000000000000 x24: 1fffe0001a4710c7 x23: 0000000000000068 x22: ffff0000dd638ed0 x21: ffff80009c187540 x20: 0000000000000002 x19: ffff0000d2388638 x18: ffff80009c1876c0 x17: 0000000000000000 x16: ffff800089f35780 x15: ffff700013830eaa x14: 1ffff00013830ea8 x13: 0000000000000001 x12: ffffffffffffffff x11: ffff700013830eaa x10: 1ffff00013830eaa x9 : 0000000000000001 x8 : 0000000000000000 x7 : 0000000000000000 x6 : ffff800080ec88c4 x5 : ffff80009c1876e0 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff80009c187540 Call trace: d_really_is_negative include/linux/dcache.h:478 [inline] open_xa_root fs/reiserfs/xattr.c:125 [inline] open_xa_dir+0xf8/0x578 fs/reiserfs/xattr.c:153 reiserfs_for_each_xattr+0x16c/0x8d8 fs/reiserfs/xattr.c:253 reiserfs_delete_xattrs+0x2c/0xa4 fs/reiserfs/xattr.c:365 reiserfs_evict_inode+0x1dc/0x3f0 fs/reiserfs/inode.c:53 evict+0x260/0x68c fs/inode.c:667 iput_final fs/inode.c:1741 [inline] iput+0x760/0x844 fs/inode.c:1767 hook_sb_delete+0x688/0xa10 security/landlock/fs.c:1155 security_sb_delete+0x50/0x94 security/security.c:1318 generic_shutdown_super+0xac/0x2b8 fs/super.c:633 kill_block_super+0x44/0x90 fs/super.c:1675 reiserfs_kill_sb+0x134/0x14c fs/reiserfs/super.c:570 deactivate_locked_super+0xc4/0x12c fs/super.c:472 deactivate_super+0xe0/0x100 fs/super.c:505 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: 97eda29f f94002e8 9101a117 d343fefc (387b6b88) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97eda29f bl 0xffffffffffb68a7c 4: f94002e8 ldr x8, [x23] 8: 9101a117 add x23, x8, #0x68 c: d343fefc lsr x28, x23, #3 * 10: 387b6b88 ldrb w8, [x28, x27] <-- trapping instruction