tblock:ffffc900027111f0: 8c839080 ffffffff 00000300 00000000 tblock:ffffc90002711200: 02711200 ffffc900 02711200 ffffc900 tblock:ffffc90002711210: 7b284df0 ffff8880 00000040 00000000 VFS: Busy inodes after unmount of loop8 (jfs) ------------[ cut here ]------------ kernel BUG at fs/super.c:652! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 6766 Comm: syz-executor Not tainted 6.15.0-rc2-syzkaller-00087-gcfb2e2c57aef #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 39 a1 ed ff 48 8b 13 48 c7 c7 60 e5 58 8c 4c 89 e6 e8 c7 b4 e9 fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003f17b60 EFLAGS: 00010246 RAX: 000000000000002d RBX: ffffffff8f15dc60 RCX: 21f6669ec42c3e00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff11009e2b0f0 R08: ffffffff81a2932c R09: 1ffff110170e47d2 R10: dffffc0000000000 R11: ffffed10170e47d3 R12: ffff88804f158668 R13: dffffc0000000000 R14: ffffffff8c830c18 R15: ffff88804f158780 FS: 0000000000000000(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32013ff8 CR3: 0000000035e84000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435 task_work_run+0x251/0x310 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa11/0x27f0 kernel/exit.c:953 do_group_exit+0x207/0x2c0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1111 x64_sys_call+0x26c3/0x26d0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa25058e169 Code: Unable to access opcode bytes at 0x7fa25058e13f. RSP: 002b:00007fff3dc03de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fa250610879 RCX: 00007fa25058e169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000002 R08: 00007fff3dc01b87 R09: 00007fff3dc050a0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3dc050a0 R13: 00007fa250610854 R14: 000000000002cbc5 R15: 00007fff3dc07260 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 39 a1 ed ff 48 8b 13 48 c7 c7 60 e5 58 8c 4c 89 e6 e8 c7 b4 e9 fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003f17b60 EFLAGS: 00010246 RAX: 000000000000002d RBX: ffffffff8f15dc60 RCX: 21f6669ec42c3e00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff11009e2b0f0 R08: ffffffff81a2932c R09: 1ffff110170e47d2 R10: dffffc0000000000 R11: ffffed10170e47d3 R12: ffff88804f158668 R13: dffffc0000000000 R14: ffffffff8c830c18 R15: ffff88804f158780 FS: 0000000000000000(0000) GS:ffff8881250c9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7777d80178 CR3: 000000004b78c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400