Hello, syzbot found the following issue on: HEAD commit: 0ba5d0720577 Add linux-next specific files for 20230726 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=131d6165a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=f33fb77ef67a25e1 dashboard link: https://syzkaller.appspot.com/bug?extid=a476a62530a631834eb0 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=110a13e9a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10d06ef6a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2fa09c6312ae/disk-0ba5d072.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7361000a4380/vmlinux-0ba5d072.xz kernel image: https://storage.googleapis.com/syzbot-assets/48a015458a58/bzImage-0ba5d072.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/fe2a8163e2fa/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a476a62530a631834eb0@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc002000800c: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000100040060-0x0000000100040067] CPU: 0 PID: 5042 Comm: syz-executor269 Not tainted 6.5.0-rc3-next-20230726-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:lookup_object lib/debugobjects.c:195 [inline] RIP: 0010:debug_object_deactivate lib/debugobjects.c:785 [inline] RIP: 0010:debug_object_deactivate+0x175/0x320 lib/debugobjects.c:771 Code: da 48 c1 ea 03 80 3c 02 00 0f 85 54 01 00 00 48 8b 1b 48 85 db 0f 84 82 00 00 00 48 8d 7b 18 41 83 c4 01 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 11 01 00 00 4c 3b 7b 18 75 c4 48 8d 7b 10 48 b8 RSP: 0018:ffffc90000007c90 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000100040048 RCX: ffffffff816850de RDX: 000000002000800c RSI: 0000000000000002 RDI: 0000000100040060 RBP: ffffc90000007d78 R08: 0000000000000001 R09: fffff52000000f80 R10: 0000000000000003 R11: 0000000000000800 R12: 0000000000000004 R13: 1ffff92000000f96 R14: ffffffff8a6eef00 R15: ffff888027a74448 FS: 0000555557506380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005571928dd028 CR3: 0000000072de4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> debug_timer_deactivate kernel/time/timer.c:787 [inline] debug_deactivate kernel/time/timer.c:831 [inline] detach_timer kernel/time/timer.c:878 [inline] expire_timers kernel/time/timer.c:1734 [inline] __run_timers+0x5f9/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x218/0x965 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:memmove+0x28/0x1b0 arch/x86/lib/memmove_64.S:44 Code: c3 90 f3 0f 1e fa 48 89 f8 48 39 fe 7d 0f 49 89 f0 49 01 d0 49 39 f8 0f 8f b5 00 00 00 48 83 fa 20 0f 82 01 01 00 00 48 89 d1 <f3> a4 c3 48 81 fa a8 02 00 00 72 05 40 38 fe 74 47 48 83 ea 20 48 RSP: 0018:ffffc900039def88 EFLAGS: 00010286 RAX: ffff888069fa5fb4 RBX: 0000000000000002 RCX: fffffffffdbd2eff RDX: ffffffffffffffe0 RSI: ffff88806c3d3085 RDI: ffff88806c3d3095 RBP: 0000000000000020 R08: ffff888069fa5f84 R09: 0000766972705f73 R10: 667265736965722e R11: 0000766972705f73 R12: 0000000000000001 R13: 0000000000000000 R14: ffff888069fa5fa4 R15: 0000000000000010 leaf_paste_entries+0x43c/0x920 fs/reiserfs/lbalance.c:1377 balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline] balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline] balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline] balance_leaf+0x9476/0xcd90 fs/reiserfs/do_balan.c:1452 do_balance+0x337/0x840 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x62a/0x7c0 fs/reiserfs/stree.c:2157 reiserfs_add_entry+0x936/0xd20 fs/reiserfs/namei.c:565 reiserfs_mkdir+0x68a/0x9a0 fs/reiserfs/namei.c:860 xattr_mkdir fs/reiserfs/xattr.c:77 [inline] create_privroot fs/reiserfs/xattr.c:891 [inline] reiserfs_xattr_init+0x57f/0xbb0 fs/reiserfs/xattr.c:1007 reiserfs_fill_super+0x2139/0x3150 fs/reiserfs/super.c:2175 mount_bdev+0x30d/0x3d0 fs/super.c:1391 legacy_get_tree+0x109/0x220 fs/fs_context.c:611 vfs_get_tree+0x88/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fefa74039aa Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 3e 06 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcc4c45728 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffcc4c45740 RCX: 00007fefa74039aa RDX: 00000000200011c0 RSI: 0000000020001100 RDI: 00007ffcc4c45740 RBP: 0000000000000004 R08: 00007ffcc4c45780 R09: 00000000000010ed R10: 000000000000c0cc R11: 0000000000000286 R12: 000000000000c0cc R13: 00007ffcc4c45780 R14: 0000000000000003 R15: 0000000000400000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:lookup_object lib/debugobjects.c:195 [inline] RIP: 0010:debug_object_deactivate lib/debugobjects.c:785 [inline] RIP: 0010:debug_object_deactivate+0x175/0x320 lib/debugobjects.c:771 Code: da 48 c1 ea 03 80 3c 02 00 0f 85 54 01 00 00 48 8b 1b 48 85 db 0f 84 82 00 00 00 48 8d 7b 18 41 83 c4 01 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 11 01 00 00 4c 3b 7b 18 75 c4 48 8d 7b 10 48 b8 RSP: 0018:ffffc90000007c90 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000100040048 RCX: ffffffff816850de RDX: 000000002000800c RSI: 0000000000000002 RDI: 0000000100040060 RBP: ffffc90000007d78 R08: 0000000000000001 R09: fffff52000000f80 R10: 0000000000000003 R11: 0000000000000800 R12: 0000000000000004 R13: 1ffff92000000f96 R14: ffffffff8a6eef00 R15: ffff888027a74448 FS: 0000555557506380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005571928dd028 CR3: 0000000072de4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 54 01 00 00 jne 0x162 e: 48 8b 1b mov (%rbx),%rbx 11: 48 85 db test %rbx,%rbx 14: 0f 84 82 00 00 00 je 0x9c 1a: 48 8d 7b 18 lea 0x18(%rbx),%rdi 1e: 41 83 c4 01 add $0x1,%r12d 22: 48 89 fa mov %rdi,%rdx 25: 48 c1 ea 03 shr $0x3,%rdx * 29: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2d: 0f 85 11 01 00 00 jne 0x144 33: 4c 3b 7b 18 cmp 0x18(%rbx),%r15 37: 75 c4 jne 0xfffffffd 39: 48 8d 7b 10 lea 0x10(%rbx),%rdi 3d: 48 rex.W 3e: b8 .byte 0xb8 --- 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. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
