Hello, syzbot found the following issue on: HEAD commit: a5541c0811a0 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=12b03958480000 kernel config: https://syzkaller.appspot.com/x/.config?x=cbd4e584773e9397 dashboard link: https://syzkaller.appspot.com/bug?extid=e95995159a736f0cd3f0 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4b7702208fb9/disk-a5541c08.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9ec0153ec051/vmlinux-a5541c08.xz kernel image: https://storage.googleapis.com/syzbot-assets/6f8725ad290a/Image-a5541c08.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e95995159a736f0cd3f0@xxxxxxxxxxxxxxxxxxxxxxxxx Unable to handle kernel paging request at virtual address 0030303030303070 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 [0030303030303070] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 3118 Comm: syz-executor.1 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __kmem_cache_alloc_node+0x17c/0x350 mm/slub.c:3437 lr : slab_pre_alloc_hook mm/slab.h:712 [inline] lr : slab_alloc_node mm/slub.c:3318 [inline] lr : __kmem_cache_alloc_node+0x80/0x350 mm/slub.c:3437 sp : ffff800010ff38e0 x29: ffff800010ff38f0 x28: ffff0000cb14cec0 x27: ffff00010a33200c x26: 0000000000000001 x25: 00000000ffffffff x24: ffff8000087a7010 x23: 0000000000000033 x22: 3030303030303030 x21: 0000000000000000 x20: 0000000000000dc0 x19: ffff0000c0001200 x18: 0000000067c04b24 x17: 00000000f35b7102 x16: ffff80000dbe6158 x15: ffff0000cb14cec0 x14: 0000000000000010 x13: 0000000000000000 x12: ffff0000cb14cec0 x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000040 x8 : 00000000008c2d71 x7 : ffff8000084c07a4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 00000000008c2d79 x2 : 0000000000000000 x1 : 0000000000000080 x0 : fffffc00045fa0c0 Call trace: next_tid mm/slub.c:2349 [inline] slab_alloc_node mm/slub.c:3382 [inline] __kmem_cache_alloc_node+0x17c/0x350 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0xb4/0x140 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] kzalloc include/linux/slab.h:689 [inline] ext4_htree_store_dirent+0x4c/0x1a8 fs/ext4/dir.c:474 htree_dirblock_to_tree+0x374/0x510 fs/ext4/namei.c:1125 ext4_htree_fill_tree+0x2a0/0x698 fs/ext4/namei.c:1204 ext4_dx_readdir+0x58c/0x8c0 fs/ext4/dir.c:597 ext4_readdir+0x17c/0xba4 fs/ext4/dir.c:142 iterate_dir+0x114/0x28c __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x80/0x204 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 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:584 Code: 54000ee1 34000eeb b9402a69 91002103 (f8696ada) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 54000ee1 b.ne 0x1dc // b.any 4: 34000eeb cbz w11, 0x1e0 8: b9402a69 ldr w9, [x19, #40] c: 91002103 add x3, x8, #0x8 * 10: f8696ada ldr x26, [x22, x9] <-- trapping instruction --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
