loop0: detected capacity change from 0 to 32768 gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS (format 1801)... gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms Unable to handle kernel paging request at virtual address dfff800000000097 KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] 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 [dfff800000000097] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6430 Comm: syz-executor.0 Not tainted 6.5.0-rc7-syzkaller-00071-gfe4469582053 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : gfs2_rindex_update+0xb0/0x31c fs/gfs2/rgrp.c:1037 lr : gfs2_rindex_update+0x8c/0x31c fs/gfs2/rgrp.c:1035 sp : ffff8000969d6d80 x29: ffff8000969d6e40 x28: dfff800000000000 x27: ffff700012d3adb4 x26: dfff800000000000 x25: ffff8000823c713c x24: ffff0000e4839a58 x23: 00000000000004b8 x22: ffff0000ceccc000 x21: 0000000000000000 x20: ffff0000ceccc740 x19: ffff8000969d6dc0 x18: 1fffe0003683adc6 x17: ffff80008e09d000 x16: ffff800080317f44 x15: 0000000000000001 x14: 1fffe0001bfc5796 x13: 0000000000000000 x12: ffff8000824495fc x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000000000000097 x7 : ffff800080865378 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 00000000ffffffff x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000ceccc000 Call trace: gfs2_rindex_update+0xb0/0x31c fs/gfs2/rgrp.c:1037 punch_hole+0xbe4/0x2fcc fs/gfs2/bmap.c:1807 gfs2_truncatei_resume+0x44/0x84 fs/gfs2/bmap.c:2157 inode_go_held+0x130/0x1e0 fs/gfs2/glops.c:526 gfs2_instantiate+0x228/0x2c8 fs/gfs2/glock.c:463 gfs2_glock_holder_ready fs/gfs2/glock.c:1319 [inline] gfs2_glock_wait+0x1b8/0x298 fs/gfs2/glock.c:1339 gfs2_glock_nq+0x94c/0x137c fs/gfs2/glock.c:1587 gfs2_glock_nq_init fs/gfs2/glock.h:261 [inline] init_statfs fs/gfs2/ops_fstype.c:695 [inline] init_journal+0x12f0/0x1fa0 fs/gfs2/ops_fstype.c:817 init_inodes+0xe0/0x2d8 fs/gfs2/ops_fstype.c:885 gfs2_fill_super+0x1780/0x1f5c fs/gfs2/ops_fstype.c:1248 get_tree_bdev+0x378/0x570 fs/super.c:1318 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1333 vfs_get_tree+0x90/0x274 fs/super.c:1519 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335 path_mount+0x590/0xe04 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: 97959610 f9400295 9112e2b7 d343fee8 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97959610 bl 0xfffffffffe565840 4: f9400295 ldr x21, [x20] 8: 9112e2b7 add x23, x21, #0x4b8 c: d343fee8 lsr x8, x23, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction