Hello, syzbot found the following issue on: HEAD commit: a2392f333575 drm/panthor: Clean up FW version information .. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=1294443f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=12ccc0a681e19f95 dashboard link: https://syzkaller.appspot.com/bug?extid=e21102eb810a20a034bd compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1695be98580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1694443f980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/aa9dc8dca3f7/disk-a2392f33.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/96ca6097aca7/vmlinux-a2392f33.xz kernel image: https://storage.googleapis.com/syzbot-assets/78dee40677fb/Image-a2392f33.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/7db194d99ee0/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=15ed73b0580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e21102eb810a20a034bd@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ BUG: Dentry 000000007215d8e2{i=42a2,n=file0} still in use (1) [unmount of ocfs2 loop0] WARNING: CPU: 1 PID: 6436 at fs/dcache.c:1572 umount_check+0x164/0x1b8 fs/dcache.c:1564 Modules linked in: CPU: 1 UID: 0 PID: 6436 Comm: syz-executor167 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0x164/0x1b8 fs/dcache.c:1564 lr : umount_check+0x164/0x1b8 fs/dcache.c:1564 sp : ffff80009cc17a70 x29: ffff80009cc17a70 x28: 0000000000000000 x27: ffff0000daefd318 x26: ffff0000cd89e2f0 x25: ffff80008feda750 x24: ffff0000c6860000 x23: dfff800000000000 x22: ffff8000902b75a0 x21: 0000000000000001 x20: 00000000000042a2 x19: ffff0000cd89e2f0 x18: 0000000000000008 x17: 5b20293128206573 x16: ffff8000832b7b9c x15: 0000000000000001 x14: 1ffff00013982ea4 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000004 x10: 0000000000ff0100 x9 : c9b6966d3b355500 x8 : c9b6966d3b355500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009cc17218 x4 : ffff80008fcafb00 x3 : ffff800083249bb4 x2 : 0000000000000001 x1 : 0000000000000002 x0 : 0000000000000000 Call trace: umount_check+0x164/0x1b8 fs/dcache.c:1564 (P) d_walk+0x1d4/0x704 fs/dcache.c:1295 do_one_tree+0x44/0xfc fs/dcache.c:1579 shrink_dcache_for_umount+0xd8/0x188 fs/dcache.c:1595 generic_shutdown_super+0x68/0x2bc fs/super.c:620 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1413 __cleanup_mnt+0x20/0x30 fs/namespace.c:1420 task_work_run+0x230/0x2e0 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 10970 hardirqs last enabled at (10969): [<ffff8000804afa4c>] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (10969): [<ffff8000804afa4c>] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2869 hardirqs last disabled at (10970): [<ffff80008b7c3e94>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (10964): [<ffff8000803128a4>] softirq_handle_end kernel/softirq.c:407 [inline] softirqs last enabled at (10964): [<ffff8000803128a4>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589 softirqs last disabled at (10723): [<ffff800080020dbc>] __do_softirq+0x14/0x20 kernel/softirq.c:595 ---[ end trace 0000000000000000 ]--- ocfs2: Unmounting device (7,0) on (node local) VFS: Busy inodes after unmount of loop0 (ocfs2) ------------[ cut here ]------------ kernel BUG at fs/super.c:652! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 UID: 0 PID: 6436 Comm: syz-executor167 Tainted: G W 6.14.0-rc7-syzkaller-ga2392f333575 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : generic_shutdown_super+0x2b8/0x2bc fs/super.c:650 lr : generic_shutdown_super+0x2b8/0x2bc fs/super.c:650 sp : ffff80009cc17bb0 x29: ffff80009cc17bb0 x28: 1fffe0001b097193 x27: 0000000000000008 x26: 0000000000000003 x25: dfff800000000000 x24: 1fffe00018d0c0f0 x23: ffff80008bc839e0 x22: dfff800000000000 x21: 0000000000000000 x20: ffff8000902b75a0 x19: ffff0000c6860668 x18: 0000000000000008 x17: 000000000000e793 x16: ffff8000832b7b9c x15: 0000000000000001 x14: 1fffe000366f60f2 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : c9b6966d3b355500 x8 : c9b6966d3b355500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009cc17378 x4 : ffff80008fcafb00 x3 : ffff800080743ed0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002f Call trace: generic_shutdown_super+0x2b8/0x2bc fs/super.c:650 (P) kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1413 __cleanup_mnt+0x20/0x30 fs/namespace.c:1420 task_work_run+0x230/0x2e0 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: d00562e0 91208000 aa1303e1 97cfdf8f (d4210000) ---[ end trace 0000000000000000 ]--- --- 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 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 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
