Unable to handle kernel paging request at virtual address dfff800000000004 KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000004] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6491 Comm: syz-executor.3 Not tainted 6.3.0-rc6-syzkaller-g1f5b16c51aef #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : pid_is_meaningful fs/gfs2/glock.c:1457 [inline] pc : dump_holder fs/gfs2/glock.c:2266 [inline] pc : gfs2_dump_glock+0xac0/0x15ac fs/gfs2/glock.c:2382 lr : rcu_read_lock include/linux/rcupdate.h:774 [inline] lr : dump_holder fs/gfs2/glock.c:2265 [inline] lr : gfs2_dump_glock+0xa50/0x15ac fs/gfs2/glock.c:2382 sp : ffff80001f9e6ec0 x29: ffff80001f9e71c0 x28: ffff80001f9e6fa0 x27: ffff80001f677170 x26: 0000000000000021 x25: 0000000000000040 x24: 0000000000000001 x23: dfff800000000000 x22: ffff8000187c0000 x21: ffff80001f9e6fc0 x20: 0000000000000001 x19: 0000000000000004 x18: 1fffe000368561b6 x17: ffff800015c7d000 x16: ffff80001231a888 x15: 0000000000000002 x14: 1ffff00002b900b0 x13: dfff800000000000 x12: 000000007eb86787 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff000134019b40 x7 : ffff80000a392278 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff800012949360 x0 : 0000000000000001 Call trace: pid_is_meaningful fs/gfs2/glock.c:1457 [inline] dump_holder fs/gfs2/glock.c:2266 [inline] gfs2_dump_glock+0xac0/0x15ac fs/gfs2/glock.c:2382 gfs2_consist_inode_i+0xe8/0x10c fs/gfs2/util.c:465 gfs2_dirent_scan+0x458/0x584 fs/gfs2/dir.c:602 gfs2_dirent_search+0x28c/0x790 fs/gfs2/dir.c:850 gfs2_dir_search+0xb8/0x280 fs/gfs2/dir.c:1650 gfs2_lookupi+0x3a4/0x500 fs/gfs2/inode.c:332 __gfs2_lookup+0xb0/0x270 fs/gfs2/inode.c:888 gfs2_atomic_open+0x9c/0x1c4 fs/gfs2/inode.c:1292 atomic_open fs/namei.c:3279 [inline] lookup_open fs/namei.c:3387 [inline] open_last_lookups fs/namei.c:3484 [inline] path_openat+0xb10/0x27f8 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1375 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: 390e1268 977e2bc1 9100831a d343ff53 (38f76a68) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 390e1268 strb w8, [x19, #900] 4: 977e2bc1 bl 0xfffffffffdf8af08 8: 9100831a add x26, x24, #0x20 c: d343ff53 lsr x19, x26, #3 * 10: 38f76a68 ldrsb w8, [x19, x23] <-- trapping instruction