Hello, syzbot found the following issue on: HEAD commit: a92b7d26c743 Merge tag 'drm-fixes-2023-06-23' of git://ano.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17455d57280000 kernel config: https://syzkaller.appspot.com/x/.config?x=2cbd298d0aff1140 dashboard link: https://syzkaller.appspot.com/bug?extid=3e32db5854a2dc0011ff compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a44d50a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10bee4cb280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/53d1be238f30/disk-a92b7d26.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/04748ac79920/vmlinux-a92b7d26.xz kernel image: https://storage.googleapis.com/syzbot-assets/78634d05a96b/bzImage-a92b7d26.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/1afab00be7e0/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3e32db5854a2dc0011ff@xxxxxxxxxxxxxxxxxxxxxxxxx REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 1 PID: 4994 Comm: syz-executor351 Not tainted 6.4.0-rc7-syzkaller-00226-ga92b7d26c743 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 panic+0x686/0x730 kernel/panic.c:340 schedule_debug kernel/sched/core.c:5905 [inline] __schedule+0x5055/0x5880 kernel/sched/core.c:6563 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6981 irqentry_exit+0x35/0x80 kernel/entry/common.c:433 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:memmove+0x4b/0x1b0 arch/x86/lib/memmove_64.S:68 Code: 01 01 00 00 0f 1f 44 00 00 48 81 fa a8 02 00 00 72 05 40 38 fe 74 48 48 83 ea 20 48 83 ea 20 4c 8b 1e 4c 8b 56 08 4c 8b 4e 10 <4c> 8b 46 18 48 8d 76 20 4c 89 1f 4c 89 57 08 4c 89 4f 10 4c 89 47 RSP: 0018:ffffc9000390ef90 EFLAGS: 00000282 RAX: ffff8880734b1030 RBX: 0000000000000000 RCX: 0000000000000000 RDX: fffffffff67b3789 RSI: ffff88807ccfe700 RDI: ffff88807ccfd730 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000fd0 R14: ffff8880734b10d8 R15: 0000000000000008 leaf_paste_in_buffer+0x270/0xc30 fs/reiserfs/lbalance.c:1017 balance_leaf_new_nodes_paste_whole fs/reiserfs/do_balan.c:1171 [inline] balance_leaf_new_nodes_paste fs/reiserfs/do_balan.c:1215 [inline] balance_leaf_new_nodes fs/reiserfs/do_balan.c:1246 [inline] balance_leaf+0x29c5/0xddc0 fs/reiserfs/do_balan.c:1450 do_balance+0x319/0x810 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x74b/0x8d0 fs/reiserfs/stree.c:2157 reiserfs_get_block+0x165c/0x4100 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x3bd/0x14b0 fs/buffer.c:2064 reiserfs_write_begin+0x36e/0xa60 fs/reiserfs/inode.c:2773 generic_cont_expand_simple+0x117/0x1f0 fs/buffer.c:2425 reiserfs_setattr+0x395/0x1370 fs/reiserfs/inode.c:3303 notify_change+0xb2c/0x1180 fs/attr.c:483 do_truncate+0x143/0x200 fs/open.c:66 do_sys_ftruncate+0x53a/0x770 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa89d7102b9 Code: eb ff ff 44 89 25 77 1e 07 00 48 8b 45 90 48 89 05 2c 43 07 00 48 8b 45 c8 64 48 2b 04 25 28 00 00 00 0f 85 1f 01 00 00 48 8d <65> d8 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 80 00 00 00 RSP: 002b:00007ffc8f2c2e78 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa89d7102b9 RDX: 00007fa89d7102b9 RSI: 0000000002007fff RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffc8f2c2ea0 R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 </TASK> Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 01 01 add %eax,(%rcx) 2: 00 00 add %al,(%rax) 4: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 9: 48 81 fa a8 02 00 00 cmp $0x2a8,%rdx 10: 72 05 jb 0x17 12: 40 38 fe cmp %dil,%sil 15: 74 48 je 0x5f 17: 48 83 ea 20 sub $0x20,%rdx 1b: 48 83 ea 20 sub $0x20,%rdx 1f: 4c 8b 1e mov (%rsi),%r11 22: 4c 8b 56 08 mov 0x8(%rsi),%r10 26: 4c 8b 4e 10 mov 0x10(%rsi),%r9 * 2a: 4c 8b 46 18 mov 0x18(%rsi),%r8 <-- trapping instruction 2e: 48 8d 76 20 lea 0x20(%rsi),%rsi 32: 4c 89 1f mov %r11,(%rdi) 35: 4c 89 57 08 mov %r10,0x8(%rdi) 39: 4c 89 4f 10 mov %r9,0x10(%rdi) 3d: 4c rex.WR 3e: 89 .byte 0x89 3f: 47 rex.RXB --- 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
