------------[ cut here ]------------ kernel BUG at fs/jffs2/nodelist.c:462! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 5926 Comm: syz-executor.0 Not tainted 6.9.0-rc3-syzkaller-00399-g72374d71c315 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:jffs2_del_ino_cache+0x24f/0x2c0 fs/jffs2/nodelist.c:462 Code: 4c 89 e2 49 8b 5e 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 71 49 89 1c 24 e9 42 ff ff ff e8 a2 f2 b2 fe 90 <0f> 0b e8 ea 6e 0f ff e9 5b fe ff ff e8 b0 6e 0f ff e9 59 ff ff ff RSP: 0018:ffffc900037efb80 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801d3fe000 RCX: 0000000000000000 RDX: ffff888025192440 RSI: ffffffff82db62ee RDI: ffff88804745b020 RBP: 0000000000000006 R08: 0000000000000000 R09: ffffed1003a7fc6d R10: ffff88801d3fe36b R11: 0000000000000003 R12: ffff88804ac58000 R13: dffffc0000000000 R14: ffff88804745b000 R15: ffff88804ac580b8 FS: 0000000000000000(0000) GS:ffff88802c400000(0063) knlGS:00000000565fe400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000565ff000 CR3: 000000005d3ae000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: jffs2_do_clear_inode+0x3bf/0x470 fs/jffs2/readinode.c:1443 evict+0x2ed/0x6c0 fs/inode.c:667 dispose_list+0x117/0x1e0 fs/inode.c:700 evict_inodes+0x3c3/0x450 fs/inode.c:744 generic_shutdown_super+0xb5/0x3d0 fs/super.c:626 kill_mtd_super+0x1d/0x80 drivers/mtd/mtdsuper.c:174 jffs2_kill_sb+0x7c/0xb0 fs/jffs2/super.c:349 deactivate_locked_super+0xbe/0x1a0 fs/super.c:472 deactivate_super+0xde/0x100 fs/super.c:505 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218 __do_fast_syscall_32+0x82/0x120 arch/x86/entry/common.c:324 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7301579 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:00000000fff20fc8 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000fff21070 RCX: 0000000000000009 RDX: 00000000f7458ff4 RSI: 00000000f73a83bd RDI: 00000000fff22114 RBP: 00000000fff21070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jffs2_del_ino_cache+0x24f/0x2c0 fs/jffs2/nodelist.c:462 Code: 4c 89 e2 49 8b 5e 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 71 49 89 1c 24 e9 42 ff ff ff e8 a2 f2 b2 fe 90 <0f> 0b e8 ea 6e 0f ff e9 5b fe ff ff e8 b0 6e 0f ff e9 59 ff ff ff RSP: 0018:ffffc900037efb80 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801d3fe000 RCX: 0000000000000000 RDX: ffff888025192440 RSI: ffffffff82db62ee RDI: ffff88804745b020 RBP: 0000000000000006 R08: 0000000000000000 R09: ffffed1003a7fc6d R10: ffff88801d3fe36b R11: 0000000000000003 R12: ffff88804ac58000 R13: dffffc0000000000 R14: ffff88804745b000 R15: ffff88804ac580b8 FS: 0000000000000000(0000) GS:ffff88802c500000(0063) knlGS:00000000565fe400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c0014bd000 CR3: 000000005d3ae000 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