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MIME-Version: 1.0 X-Received: by 2002:a05:6638:371f:b0:349:cfb0:89a9 with SMTP id k31-20020a056638371f00b00349cfb089a9mr3765261jav.151.1661511026488; Fri, 26 Aug 2022 03:50:26 -0700 (PDT) Date: Fri, 26 Aug 2022 03:50:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000863a7305e722aeeb@google.com> Subject: [syzbot] BUG: Dentry still in use in unmount From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: a41a877bc12d Merge branch 'for-next/fixes' into for-kernelci 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=13901aad080000 kernel config: https://syzkaller.appspot.com/x/.config?x=5cea15779c42821c dashboard link: https://syzkaller.appspot.com/bug?extid=8608bb4553edb8c78f41 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d75e95080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15440857080000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8608bb4553edb8c78f41@syzkaller.appspotmail.com BUG: Dentry 00000000133f9b6b{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3045 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 3045 Comm: syz-executor425 Not tainted 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0xc0/0xc8 fs/dcache.c:1667 lr : umount_check+0xc0/0xc8 fs/dcache.c:1667 sp : ffff800012ac3bc0 x29: ffff800012ac3bc0 x28: ffff0000c7bb05f8 x27: ffff80000d4e1e20 x26: ffff0000c7bb04e0 x25: 0000000000000001 x24: ffff0000c7bb05f8 x23: ffff0000c7bb0090 x22: ffff0000c7b9d138 x21: ffff8000085edd40 x20: 0000000000000000 x19: ffff0000c7bb0000 x18: 00000000000000c0 x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c378cf80 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c378cf80 x11: ff808000081c39dc x10: 0000000000000000 x9 : 3f5cf90385ca4900 x8 : 3f5cf90385ca4900 x7 : ffff800008197c8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefddcd0 x1 : 0000000100000002 x0 : 0000000000000060 Call trace: umount_check+0xc0/0xc8 fs/dcache.c:1667 d_walk+0x13c/0x55c fs/dcache.c:1386 do_one_tree fs/dcache.c:1683 [inline] shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699 generic_shutdown_super+0x30/0x190 fs/super.c:473 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xd4 fs/super.c:332 deactivate_super+0xb8/0xbc fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 168478 hardirqs last enabled at (168477): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264 hardirqs last disabled at (168478): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395 softirqs last enabled at (168132): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (168130): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BUG: Dentry 00000000133f9b6b{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3045 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 3045 Comm: syz-executor425 Tainted: G W 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0xc0/0xc8 fs/dcache.c:1667 lr : umount_check+0xc0/0xc8 fs/dcache.c:1667 sp : ffff800012ac3bc0 x29: ffff800012ac3bc0 x28: ffff0000c7bb05f8 x27: ffff80000d4e1e20 x26: ffff0000c7bb04e0 x25: 0000000000000001 x24: ffff0000c7bb05f8 x23: ffff0000c7bb0090 x22: ffff0000c7b9d138 x21: ffff8000085edd40 x20: 0000000000000000 x19: ffff0000c7bb0000 x18: 00000000000000c0 x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c378cf80 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c378cf80 x11: ff808000081c39dc x10: 0000000000000000 x9 : 3f5cf90385ca4900 x8 : 3f5cf90385ca4900 x7 : ffff800008197c8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefddcd0 x1 : 0000000100000003 x0 : 0000000000000060 Call trace: umount_check+0xc0/0xc8 fs/dcache.c:1667 d_walk+0x13c/0x55c fs/dcache.c:1386 do_one_tree fs/dcache.c:1683 [inline] shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699 generic_shutdown_super+0x30/0x190 fs/super.c:473 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xd4 fs/super.c:332 deactivate_super+0xb8/0xbc fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 168928 hardirqs last enabled at (168927): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264 hardirqs last disabled at (168928): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395 softirqs last enabled at (168922): [] _stext+0x2e4/0x37c softirqs last disabled at (168635): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (168635): [] invoke_softirq+0x70/0xbc kernel/softirq.c:452 ---[ end trace 0000000000000000 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry 000000005431b8af{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3045 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667 Modules linked in: CPU: 0 PID: 3045 Comm: syz-executor425 Tainted: G W 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0xc0/0xc8 fs/dcache.c:1667 lr : umount_check+0xc0/0xc8 fs/dcache.c:1667 sp : ffff800012ac3bc0 x29: ffff800012ac3bc0 x28: ffff0000c7b98250 x27: ffff80000d4e1e20 x26: ffff0000c7b98138 x25: 0000000000000001 x24: ffff0000c7b98250 x23: ffff0000cc849570 x22: ffff0000cc99d750 x21: ffff8000085edd40 x20: 0000000000000000 x19: ffff0000cc8494e0 x18: 0000000000000350 x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c378cf80 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c378cf80 x11: ff808000081c39dc x10: 0000000000000000 x9 : 3f5cf90385ca4900 x8 : 3f5cf90385ca4900 x7 : ffff800008197c8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbecd0 x1 : 0000000100000002 x0 : 0000000000000060 Call trace: umount_check+0xc0/0xc8 fs/dcache.c:1667 d_walk+0x13c/0x55c fs/dcache.c:1386 do_one_tree fs/dcache.c:1683 [inline] shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699 generic_shutdown_super+0x30/0x190 fs/super.c:473 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xd4 fs/super.c:332 deactivate_super+0xb8/0xbc fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 257288 hardirqs last enabled at (257287): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264 hardirqs last disabled at (257288): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395 softirqs last enabled at (256910): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (256908): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry 000000005431b8af{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3045 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 3045 Comm: syz-executor425 Tainted: G W 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0xc0/0xc8 fs/dcache.c:1667 lr : umount_check+0xc0/0xc8 fs/dcache.c:1667 sp : ffff800012ac3bc0 x29: ffff800012ac3bc0 x28: ffff0000c7b98250 x27: ffff80000d4e1e20 x26: ffff0000c7b98138 x25: 0000000000000001 x24: ffff0000c7b98250 x23: ffff0000cc849570 x22: ffff0000cc88d138 x21: ffff8000085edd40 x20: 0000000000000000 x19: ffff0000cc8494e0 x18: 00000000000002ea x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c378cf80 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c378cf80 x11: ff808000081c39dc x10: 0000000000000000 x9 : 3f5cf90385ca4900 x8 : 3f5cf90385ca4900 x7 : ffff800008197c8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefddcd0 x1 : 0000000100000002 x0 : 0000000000000060 Call trace: umount_check+0xc0/0xc8 fs/dcache.c:1667 d_walk+0x13c/0x55c fs/dcache.c:1386 do_one_tree fs/dcache.c:1683 [inline] shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699 generic_shutdown_super+0x30/0x190 fs/super.c:473 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xd4 fs/super.c:332 deactivate_super+0xb8/0xbc fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 283828 hardirqs last enabled at (283827): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264 hardirqs last disabled at (283828): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395 softirqs last enabled at (283438): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (283436): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry 000000005431b8af{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3045 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 3045 Comm: syz-executor425 Tainted: G W 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0xc0/0xc8 fs/dcache.c:1667 lr : umount_check+0xc0/0xc8 fs/dcache.c:1667 sp : ffff800012ac3bc0 x29: ffff800012ac3bc0 x28: ffff0000c7b98250 x27: ffff80000d4e1e20 x26: ffff0000c7b98138 x25: 0000000000000001 x24: ffff0000c7b98250 x23: ffff0000cc849570 x22: ffff0000cc88dc30 x21: ffff8000085edd40 x20: 0000000000000000 x19: ffff0000cc8494e0 x18: 0000000000000109 x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c378cf80 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c378cf80 x11: ff808000081c39dc x10: 0000000000000000 x9 : 3f5cf90385ca4900 x8 : 3f5cf90385ca4900 x7 : ffff800008197c8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefddcd0 x1 : 0000000000000002 x0 : 0000000000000060 Call trace: umount_check+0xc0/0xc8 fs/dcache.c:1667 d_walk+0x13c/0x55c fs/dcache.c:1386 do_one_tree fs/dcache.c:1683 [inline] shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699 generic_shutdown_super+0x30/0x190 fs/super.c:473 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xd4 fs/super.c:332 deactivate_super+0xb8/0xbc fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 335826 hardirqs last enabled at (335825): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264 hardirqs last disabled at (335826): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395 softirqs last enabled at (335820): [] _stext+0x2e4/0x37c softirqs last disabled at (335803): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (335803): [] invoke_softirq+0x70/0xbc kernel/softirq.c:452 ---[ end trace 0000000000000000 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... loop0: unable to read partition table loop0: partition table beyond EOD, truncated BUG: Dentry 00000000cd442007{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3045 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 3045 Comm: syz-executor425 Tainted: G W 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0xc0/0xc8 fs/dcache.c:1667 lr : umount_check+0xc0/0xc8 fs/dcache.c:1667 sp : ffff800012ac3bc0 x29: ffff800012ac3bc0 x28: ffff0000cc88d5f8 x27: ffff80000d4e1e20 x26: ffff0000cc88d4e0 x25: 0000000000000001 x24: ffff0000cc88d5f8 x23: ffff0000cc88d438 x22: ffff0000ca0579c0 x21: ffff8000085edd40 x20: 0000000000000000 x19: ffff0000cc88d3a8 x18: 000000000000009d x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c378cf80 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c378cf80 x11: ff808000081c39dc x10: 0000000000000000 x9 : 3f5cf90385ca4900 x8 : 3f5cf90385ca4900 x7 : ffff800008197c8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefddcd0 x1 : 0000000100000002 x0 : 0000000000000060 Call trace: umount_check+0xc0/0xc8 fs/dcache.c:1667 d_walk+0x13c/0x55c fs/dcache.c:1386 do_one_tree fs/dcache.c:1683 [inline] shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699 generic_shutdown_super+0x30/0x190 fs/super.c:473 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xd4 fs/super.c:332 deactivate_super+0xb8/0xbc fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 366714 hardirqs last enabled at (366713): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264 hardirqs last disabled at (366714): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395 softirqs last enabled at (366346): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (366344): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... loop0: unable to read partition table loop0: partition table beyond EOD, truncated --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches