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] PREEMPT SMP Modules linked in: CPU: 1 PID: 6252 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] pc : jfs_flush_journal+0x810/0xd64 fs/jfs/jfs_logmgr.c:1582 lr : write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline] lr : jfs_flush_journal+0x7ec/0xd64 fs/jfs/jfs_logmgr.c:1582 sp : ffff800099657780 x29: ffff800099657870 x28: dfff800000000000 x27: 1fffe0001b7fe445 x26: 1fffe0001b7fe435 x25: 1fffe0001b7fe400 x24: 0000000000000030 x23: ffff0000cc919638 x22: ffff0000dbff2228 x21: 0000000000000003 x20: ffff0000dbff21a8 x19: ffff0000dbff2000 x18: 1fffe000367b9596 x17: ffff80008ee7d000 x16: ffff80008adadd40 x15: 0000000000000003 x14: 0000000000000000 x13: ffff7000132caedb x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : d1a5c08d5b89e000 x8 : 0000000000000006 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : ffffffffffffffd0 x3 : 0000000000000010 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] jfs_flush_journal+0x810/0xd64 fs/jfs/jfs_logmgr.c:1582 jfs_umount+0x148/0x360 fs/jfs/jfs_umount.c:58 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x128/0x2b8 fs/super.c:641 kill_block_super+0x44/0x90 fs/super.c:1675 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 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x4e4/0x1ac8 kernel/exit.c:878 do_group_exit+0x194/0x22c kernel/exit.c:1027 __do_sys_exit_group kernel/exit.c:1038 [inline] __se_sys_exit_group kernel/exit.c:1036 [inline] pid_child_should_wake+0x0/0x1dc kernel/exit.c:1036 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 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: 97bef14f f9400308 9100c118 d343ff08 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97bef14f bl 0xfffffffffefbc53c 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