Unable to handle kernel paging request at virtual address dfff800000000006 KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] 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 [dfff800000000006] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6531 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline] pc : jfs_flush_journal+0x790/0xd2c fs/jfs/jfs_logmgr.c:1582 lr : jfs_flush_journal+0x73c/0xd2c fs/jfs/jfs_logmgr.c:1581 sp : ffff80009cf179c0 x29: ffff80009cf17a90 x28: dfff800000000000 x27: 1fffe0001ec38745 x26: 1fffe0001ec38700 x25: 1fffe0001ec38735 x24: 0000000000000030 x23: ffff0000d55b4438 x22: 0000000000000001 x21: ffff0000f61c3a28 x20: ffff0000f61c39a8 x19: ffff0000f61c3800 x18: 1fffe0003378f088 x17: ffff80008f7ee000 x16: ffff80008052b424 x15: 0000000000000001 x14: 1ffff00012f092ee x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093339c28 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000006 x7 : ffff80008312fc94 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffffffffffffffff x0 : 0000000000000000 Call trace: write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline] (P) jfs_flush_journal+0x790/0xd2c fs/jfs/jfs_logmgr.c:1582 (P) jfs_umount+0x140/0x350 fs/jfs/jfs_umount.c:58 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1766 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1375 __cleanup_mnt+0x20/0x30 fs/namespace.c:1382 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: 97c146b6 f9400308 9100c118 d343ff08 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97c146b6 bl 0xffffffffff051ad8 4: f9400308 ldr x8, [x24] 8: 9100c118 add x24, x8, #0x30 c: d343ff08 lsr x8, x24, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction