=================================================================== Unable to handle kernel paging request at virtual address dfff800000000048 KASAN: null-ptr-deref in range [0x0000000000000240-0x0000000000000247] 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 [dfff800000000048] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6455 Comm: syz.0.15 Not tainted 6.10.0-syzkaller-08676-g720261cfc732 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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 : ffff80009df66de0 x29: ffff80009df66f60 x28: ffff8000915edc59 x27: ffff8000915ecd59 x26: ffff80009df67078 x25: ffff80009df67060 x24: ffff80009df66ec0 x23: ffff8000915ecd40 x22: 0000000000000400 x21: ffff80009df67068 x20: 0000000000000241 x19: dfff800000000000 x18: ffff80009df66ac0 x17: 000000000001a1c9 x16: ffff80008054704c x15: 0000000000000003 x14: 0000000000000000 x13: 000000000000007a x12: ffff0000c5e73c80 x11: ffff80008a344180 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000048 x7 : 20736e6961746e6f x6 : 6961746e6f632029 x5 : ffff8000915ecd59 x4 : ffff8000915edc59 x3 : ffff80008a079fb8 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:1724 reiserfs_do_truncate+0x858/0x10f8 fs/reiserfs/stree.c:1971 reiserfs_truncate_file+0x510/0xb18 fs/reiserfs/inode.c:2302 reiserfs_file_release+0x710/0x884 fs/reiserfs/file.c:109 __fput+0x1bc/0x774 fs/file_table.c:422 ____fput+0x20/0x30 fs/file_table.c:450 task_work_run+0x230/0x2e0 kernel/task_work.c:222 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: 97ee7758 f9400288 9100a114 d343fe88 (38736908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97ee7758 bl 0xffffffffffb9dd60 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