Hello, syzbot found the following issue on: HEAD commit: 00dcf5d862e8 Merge tag 'acpi-6.9-rc4' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11a98eeb180000 kernel config: https://syzkaller.appspot.com/x/.config?x=c5a8421528fe0176 dashboard link: https://syzkaller.appspot.com/bug?extid=badbb16b0a5dd4c2f676 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-00dcf5d8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/68de786626b3/vmlinux-00dcf5d8.xz kernel image: https://storage.googleapis.com/syzbot-assets/dba6f0189428/bzImage-00dcf5d8.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+badbb16b0a5dd4c2f676@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ kernel BUG at fs/jffs2/summary.c:865! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 3 PID: 5545 Comm: syz-executor.3 Not tainted 6.9.0-rc3-syzkaller-00189-g00dcf5d862e8 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:jffs2_sum_write_sumnode+0x1cf6/0x2220 fs/jffs2/summary.c:865 Code: 0f b6 04 02 84 c0 74 08 3c 03 0f 8e d7 01 00 00 8b b3 c0 05 00 00 48 c7 c2 40 b7 44 8b 48 c7 c7 40 b3 44 8b e8 ab 09 8f fe 90 <0f> 0b e8 23 6b f1 07 e8 6e b6 0a ff e9 d9 e5 ff ff 48 89 cf 48 89 RSP: 0018:ffffc9000ca874d0 EFLAGS: 00010282 RAX: 0000000000000045 RBX: ffff88801fb6a440 RCX: ffffffff816f3829 RDX: 0000000000000000 RSI: ffffffff816fc366 RDI: 0000000000000005 RBP: ffffc9000ca87650 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88805e196898 R15: ffff888059d1a000 FS: 0000000000000000(0000) GS:ffff88802c500000(0063) knlGS:00000000f5ea1b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c001927000 CR3: 000000005fbbe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> jffs2_do_reserve_space+0xb52/0x1030 fs/jffs2/nodemgmt.c:388 jffs2_reserve_space+0x62e/0xba0 fs/jffs2/nodemgmt.c:197 do_jffs2_setxattr+0x1a1/0x16c0 fs/jffs2/xattr.c:1113 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:234 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295 vfs_setxattr+0x146/0x350 fs/xattr.c:321 do_setxattr+0x146/0x170 fs/xattr.c:629 setxattr+0x15d/0x180 fs/xattr.c:652 path_setxattr+0x179/0x1e0 fs/xattr.c:671 __do_sys_lsetxattr fs/xattr.c:694 [inline] __se_sys_lsetxattr fs/xattr.c:690 [inline] __ia32_sys_lsetxattr+0xbd/0x160 fs/xattr.c:690 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:321 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf72af579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5ea15ac EFLAGS: 00000292 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00000000200001c0 RCX: 00000000200002c0 RDX: 0000000020002040 RSI: 0000000000001009 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jffs2_sum_write_sumnode+0x1cf6/0x2220 fs/jffs2/summary.c:865 Code: 0f b6 04 02 84 c0 74 08 3c 03 0f 8e d7 01 00 00 8b b3 c0 05 00 00 48 c7 c2 40 b7 44 8b 48 c7 c7 40 b3 44 8b e8 ab 09 8f fe 90 <0f> 0b e8 23 6b f1 07 e8 6e b6 0a ff e9 d9 e5 ff ff 48 89 cf 48 89 RSP: 0018:ffffc9000ca874d0 EFLAGS: 00010282 RAX: 0000000000000045 RBX: ffff88801fb6a440 RCX: ffffffff816f3829 RDX: 0000000000000000 RSI: ffffffff816fc366 RDI: 0000000000000005 RBP: ffffc9000ca87650 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88805e196898 R15: ffff888059d1a000 FS: 0000000000000000(0000) GS:ffff88802c500000(0063) knlGS:00000000f5ea1b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c001927000 CR3: 000000005fbbe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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 report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
