ERROR: (device loop4): remounting filesystem as read-only ------------[ cut here ]------------ kernel BUG at fs/jfs/inode.c:169! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13941 Comm: syz.4.2328 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:jfs_evict_inode+0x431/0x440 fs/jfs/inode.c:169 Code: e3 fe e9 e0 fd ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 23 fe ff ff 4c 89 f7 e8 79 80 e3 fe e9 16 fe ff ff e8 df 28 8c fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 41 57 41 RSP: 0018:ffffc90003347720 EFLAGS: 00010293 RAX: ffffffff82f961f1 RBX: ffff88807a098430 RCX: ffff8880270f5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807a098430 RBP: 0000000000000001 R08: ffffffff90da7667 R09: 1ffffffff21b4ecc R10: dffffc0000000000 R11: fffffbfff21b4ecd R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff88807a0980b8 R15: ffff88807a098600 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005564332a2950 CR3: 0000000062784000 CR4: 00000000003506e0 Call Trace: evict+0x486/0x870 fs/inode.c:705 dispose_list fs/inode.c:738 [inline] evict_inodes+0x5fe/0x690 fs/inode.c:792 generic_shutdown_super+0x97/0x2b0 fs/super.c:672 kill_block_super+0x44/0x90 fs/super.c:1660 deactivate_locked_super+0x97/0x100 fs/super.c:481 cleanup_mnt+0x429/0x4c0 fs/namespace.c:1250 task_work_run+0x1ce/0x250 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0x90b/0x23c0 kernel/exit.c:883 do_group_exit+0x21b/0x2d0 kernel/exit.c:1024 get_signal+0x12fc/0x1400 kernel/signal.c:2902 arch_do_signal_or_restart+0x96/0x780 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:315 exc_page_fault+0x8f/0x110 arch/x86/mm/fault.c:1524 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608 RIP: 0033:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 002b:00002000000000c8 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f67931e5fa0 RCX: 00007f6792f8eec9 RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000208000 RBP: 00007f6793011f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 00007f67931e6038 R14: 00007f67931e5fa0 R15: 00007ffd88c66a78 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jfs_evict_inode+0x431/0x440 fs/jfs/inode.c:169 Code: e3 fe e9 e0 fd ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 23 fe ff ff 4c 89 f7 e8 79 80 e3 fe e9 16 fe ff ff e8 df 28 8c fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 41 57 41 RSP: 0018:ffffc90003347720 EFLAGS: 00010293 RAX: ffffffff82f961f1 RBX: ffff88807a098430 RCX: ffff8880270f5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807a098430 RBP: 0000000000000001 R08: ffffffff90da7667 R09: 1ffffffff21b4ecc R10: dffffc0000000000 R11: fffffbfff21b4ecd R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff88807a0980b8 R15: ffff88807a098600 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005564332a2950 CR3: 0000000062784000 CR4: 00000000003506e0