Unable to handle kernel paging request at virtual address dfff800000000006 KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] 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 [dfff800000000006] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 93 Comm: jfsCommit Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] pc : lmLogSync+0x140/0x884 fs/jfs/jfs_logmgr.c:935 lr : write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline] lr : lmLogSync+0x11c/0x884 fs/jfs/jfs_logmgr.c:935 sp : ffff80001ffd7ba0 x29: ffff80001ffd7c50 x28: 1ffff00003ffd266 x27: ffff800015939000 x26: 1ffff00002b272c4 x25: dfff800000000000 x24: ffff700003ffaf74 x23: ffff0000dc82694c x22: ffff80001ffd7ba0 x21: 0000000000000030 x20: ffff0000cea78c38 x19: ffff0000dc826800 x18: 0000000000000000 x17: ffff80018a0bd000 x16: ffff8000082f2d40 x15: 0000000040000002 x14: 0000000000000009 x13: 1ffff00003ffaf58 x12: 0000000000000000 x11: ff008000086e9c7c x10: 0000000000000000 x9 : 930157f7c935d600 x8 : 0000000000000006 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 000000000000000c x3 : 0000000000000030 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] lmLogSync+0x140/0x884 fs/jfs/jfs_logmgr.c:935 jfs_syncpt+0x70/0x94 fs/jfs/jfs_logmgr.c:1041 txEnd+0x290/0x4e8 fs/jfs/jfs_txnmgr.c:550 txLazyCommit fs/jfs/jfs_txnmgr.c:2685 [inline] jfs_lazycommit+0x488/0x930 fs/jfs/jfs_txnmgr.c:2733 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 Code: 97c01c4b f94002a8 9100c115 d343fea8 (38796908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97c01c4b bl 0xffffffffff00712c 4: f94002a8 ldr x8, [x21] 8: 9100c115 add x21, x8, #0x30 c: d343fea8 lsr x8, x21, #3 * 10: 38796908 ldrb w8, [x8, x25] <-- trapping instruction