loop0: detected capacity change from 0 to 14901 read_mapping_page failed! jfs_mount: diMount failed w/rc = -5 Unable to handle kernel paging request at virtual address dfff800000000021 KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] 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 [dfff800000000021] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 9105 Comm: syz-executor.0 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : diFree+0x1fc/0x2648 fs/jfs/jfs_imap.c:871 lr : diFree+0x1ec/0x2648 fs/jfs/jfs_imap.c:854 sp : ffff800097797440 x29: ffff8000977976b0 x28: 0000000000000021 x27: 000000000000010b x26: ffff0000c8a01e00 x25: ffff000131799ff0 x24: ffff800097797640 x23: ffff700012ef2eb4 x22: 0000000000000000 x21: ffff00013179a018 x20: 0000000000000002 x19: dfff800000000000 x18: ffff0001b422fff8 x17: ffff80008deed000 x16: ffff80008a3953c0 x15: ffff800080af8b6c x14: 1ffff00011bde0ac x13: dfff800000000000 x12: 0000000000000003 x11: 1ffff00012ef2ec8 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff800097797658 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff800097797640 Call trace: diFree+0x1fc/0x2648 fs/jfs/jfs_imap.c:866 jfs_evict_inode+0x2d0/0x3f4 fs/jfs/inode.c:156 evict+0x260/0x68c fs/inode.c:665 iput_final fs/inode.c:1747 [inline] iput+0x734/0x818 fs/inode.c:1773 diFreeSpecial+0x78/0x108 fs/jfs/jfs_imap.c:548 jfs_mount+0x53c/0x7a4 fs/jfs/jfs_mount.c:203 jfs_fill_super+0x464/0x9f0 fs/jfs/super.c:556 mount_bdev+0x274/0x370 fs/super.c:1380 jfs_do_mount+0x44/0x58 fs/jfs/super.c:670 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1510 do_new_mount+0x25c/0x8c4 fs/namespace.c:3039 path_mount+0x590/0xe04 fs/namespace.c:3369 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: 910012db f900aff6 d343ff7c d34cfe96 (38f36b88) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 910012db add x27, x22, #0x4 4: f900aff6 str x22, [sp, #344] 8: d343ff7c lsr x28, x27, #3 c: d34cfe96 lsr x22, x20, #12 * 10: 38f36b88 ldrsb w8, [x28, x19] <-- trapping instruction