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: 0 PID: 91 Comm: jfsCommit Not tainted 6.1.138-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] pc : lmLogSync+0x134/0x894 fs/jfs/jfs_logmgr.c:935 lr : write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline] lr : lmLogSync+0x110/0x894 fs/jfs/jfs_logmgr.c:935 sp : ffff80001cff7b60 x29: ffff80001cff7c30 x28: 1ffff00003fa08aa x27: dfff800000000000 x26: 1ffff00002ac4d38 x25: dfff800000000000 x24: ffff80001cff7b80 x23: 0000000000000006 x22: ffff7000039fef70 x21: 0000000000000030 x20: ffff0000d1c08638 x19: ffff0000f44d5800 x18: ffff800011a7bd00 x17: ffff8000181a0000 x16: ffff8000082e6c44 x15: ffff800017c80fc0 x14: ffff0000c7518a98 x13: ffff0000c7518ac0 x12: 0000000000ff0100 x11: ff008000086cf334 x10: 0000000000000000 x9 : 1d36a0f4dfdb4d00 x8 : 0000000000000006 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff80001849ed98 x4 : 000000000000000c x3 : 0000000000000030 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] lmLogSync+0x134/0x894 fs/jfs/jfs_logmgr.c:935 jfs_syncpt+0x70/0x94 fs/jfs/jfs_logmgr.c:1041 txEnd+0x290/0x4f0 fs/jfs/jfs_txnmgr.c:549 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline] jfs_lazycommit+0x498/0x918 fs/jfs/jfs_txnmgr.c:2732 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 Code: 97c115d3 f94002a8 9100c115 d343fea8 (387b6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97c115d3 bl 0xffffffffff04574c 4: f94002a8 ldr x8, [x21] 8: 9100c115 add x21, x8, #0x30 c: d343fea8 lsr x8, x21, #3 * 10: 387b6908 ldrb w8, [x8, x27] <-- trapping instruction