=================================================================== Unable to handle kernel paging request at virtual address dfff800000000048 KASAN: null-ptr-deref in range [0x0000000000000240-0x0000000000000247] 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 [dfff800000000048] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4516 Comm: syz.3.40 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : scnprintf_block_head fs/reiserfs/prints.c:152 [inline] pc : prepare_error_buf+0xe80/0x157c fs/reiserfs/prints.c:245 lr : prepare_error_buf+0x660/0x157c fs/reiserfs/prints.c:246 sp : ffff800021816b20 x29: ffff800021816ca0 x28: ffff80001cdc49b9 x27: ffff80001cdc3ab9 x26: ffff800021816db8 x25: ffff800021816da0 x24: ffff800021816c00 x23: ffff80001cdc3aa0 x22: 0000000000000400 x21: ffff800021816da8 x20: 0000000000000241 x19: dfff800000000000 x18: ffff800021816820 x17: ffff800018b6a000 x16: ffff8000084f280c x15: 0000000000000000 x14: 000000000000007a x13: ffff0000dda1d340 x12: 0000000000ff0100 x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800008d88a44 x8 : 0000000000000048 x7 : 20736e6961746e6f x6 : 6961746e6f632029 x5 : ffff80001cdc3ab9 x4 : ffff80001cdc49b9 x3 : ffff8000122dd678 x2 : 000000000000000b x1 : 00000000ffffffc8 x0 : 00000000fffffff9 Call trace: scnprintf_block_head fs/reiserfs/prints.c:152 [inline] prepare_error_buf+0xe80/0x157c fs/reiserfs/prints.c:245 reiserfs_printk+0xdc/0x134 fs/reiserfs/prints.c:312 print_leaf fs/reiserfs/prints.c:496 [inline] print_block+0x34c/0x1508 fs/reiserfs/prints.c:626 reiserfs_cut_from_item+0x1904/0x1c98 fs/reiserfs/stree.c:1726 reiserfs_do_truncate+0x89c/0x11c8 fs/reiserfs/stree.c:1973 reiserfs_truncate_file+0x510/0xb1c fs/reiserfs/inode.c:2310 reiserfs_file_release+0x710/0x884 fs/reiserfs/file.c:109 __fput+0x1c8/0x7c8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 97efacaa f9400288 9100a114 d343fe88 (38736908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97efacaa bl 0xffffffffffbeb2a8 4: f9400288 ldr x8, [x20] 8: 9100a114 add x20, x8, #0x28 c: d343fe88 lsr x8, x20, #3 * 10: 38736908 ldrb w8, [x8, x19] <-- trapping instruction