INFO: task systemd-udevd:116 blocked for more than 143 seconds. Not tainted 5.10.235 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:26224 pid: 116 ppid: 1 flags:0x00000320 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4684 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7a8/0x10b0 kernel/locking/mutex.c:1109 __blkdev_get+0x457/0x1660 fs/block_dev.c:1503 blkdev_get fs/block_dev.c:1658 [inline] blkdev_open+0x227/0x300 fs/block_dev.c:1775 do_dentry_open+0x4b7/0x1090 fs/open.c:817 do_open fs/namei.c:3307 [inline] path_openat+0x19ba/0x2770 fs/namei.c:3425 do_filp_open+0x190/0x3e0 fs/namei.c:3452 do_sys_openat2+0x171/0x4d0 fs/open.c:1227 do_sys_open fs/open.c:1243 [inline] __do_sys_openat fs/open.c:1259 [inline] __se_sys_openat fs/open.c:1254 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1254 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f22df0ae767 RSP: 002b:00007fffbd4de7d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fffbd4de8d0 RCX: 00007f22df0ae767 RDX: 00000000000a0800 RSI: 0000564a585a09b0 RDI: 00000000ffffff9c RBP: 0000564a585a09b0 R08: 0000564a2ef4d540 R09: 00007f22df094be0 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800 R13: 0000564a2ef4d89f R14: 00007fffbd4de8a0 R15: 0000564a58581380 INFO: task syz-executor.6:14352 blocked for more than 143 seconds. Not tainted 5.10.235 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:27936 pid:14352 ppid: 286 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4684 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7a8/0x10b0 kernel/locking/mutex.c:1109 blkdev_put+0x30/0x530 fs/block_dev.c:1826 blkdev_close+0x8c/0xb0 fs/block_dev.c:1875 __fput+0x285/0x9f0 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:185 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x186/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fb0526d872b RSP: 002b:00007ffd09a14630 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fb0526d872b RDX: 0000001b2cf22148 RSI: ffffffff813b07f1 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2cf205bc R10: 000000000000068d R11: 0000000000000293 R12: 00007fb052839b60 R13: 00007fb052839b60 R14: 00007fb052838f60 R15: 00000000001bf6ef INFO: task syz-executor.6:14359 blocked for more than 143 seconds. Not tainted 5.10.235 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:27768 pid:14359 ppid: 286 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 blk_queue_enter+0x865/0xc30 block/blk-core.c:465 bio_queue_enter block/blk-core.c:480 [inline] __submit_bio_noacct_mq block/blk-core.c:1011 [inline] submit_bio_noacct+0xc42/0x1010 block/blk-core.c:1053 submit_bio+0xf3/0x4e0 block/blk-core.c:1123 submit_bh_wbc.constprop.0+0x580/0x780 fs/buffer.c:3054 submit_bh fs/buffer.c:3060 [inline] __bread_slow fs/buffer.c:1209 [inline] __bread_gfp+0x166/0x3a0 fs/buffer.c:1402 sb_bread include/linux/buffer_head.h:335 [inline] isofs_fill_super+0xb9d/0x2990 fs/isofs/inode.c:672 mount_bdev+0x336/0x400 fs/super.c:1442 legacy_get_tree+0x105/0x220 fs/fs_context.c:593 vfs_get_tree+0x8e/0x300 fs/super.c:1572 do_new_mount fs/namespace.c:2917 [inline] path_mount+0x1429/0x2120 fs/namespace.c:3247 do_mount fs/namespace.c:3260 [inline] __do_sys_mount fs/namespace.c:3468 [inline] __se_sys_mount fs/namespace.c:3445 [inline] __x64_sys_mount+0x282/0x300 fs/namespace.c:3445 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fb05272704a RSP: 002b:00007fb04fc9afa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fb05272704a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fb04fc9b000 RBP: 00007fb04fc9b040 R08: 00007fb04fc9b040 R09: 0000000020000000 R10: 0000000000000001 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fb04fc9b000 R15: 0000000020011e00 INFO: task syz-executor.3:14356 blocked for more than 143 seconds. Not tainted 5.10.235 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28224 pid:14356 ppid: 283 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 rwsem_down_read_slowpath+0x514/0xbb0 kernel/locking/rwsem.c:1099 __down_read kernel/locking/rwsem.c:1341 [inline] down_read+0x1f5/0x430 kernel/locking/rwsem.c:1506 __get_super.part.0+0x20d/0x2e0 fs/super.c:773 __get_super include/linux/spinlock.h:354 [inline] get_super+0x2b/0x60 fs/super.c:802 __invalidate_device+0x1c/0x130 fs/block_dev.c:2142 check_disk_size_change+0x122/0x190 fs/block_dev.c:1360 revalidate_disk_size fs/block_dev.c:1388 [inline] revalidate_disk_size+0x80/0xc0 fs/block_dev.c:1375 set_capacity_and_notify+0x8c/0x150 block/genhd.c:57 loop_set_size drivers/block/loop.c:241 [inline] loop_set_status+0x851/0xa10 drivers/block/loop.c:1400 loop_set_status_old+0x1bb/0x250 drivers/block/loop.c:1530 lo_ioctl+0xa19/0x16b0 drivers/block/loop.c:1700 __blkdev_driver_ioctl block/ioctl.c:240 [inline] blkdev_ioctl+0x291/0x710 block/ioctl.c:640 block_ioctl+0xf9/0x140 fs/block_dev.c:1893 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f002923cb19 RSP: 002b:00007f00267b2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f002934ff60 RCX: 00007f002923cb19 RDX: 0000000020000140 RSI: 0000000000004c02 RDI: 0000000000000003 RBP: 00007f0029296f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbddfc52f R14: 00007f00267b2300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84ff9a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x27b kernel/locking/lockdep.c:6407 1 lock held by systemd-udevd/116: #0: ffff88800b61b8c0 (&bdev->bd_mutex){+.+.}-{3:3}, at: __blkdev_get+0x457/0x1660 fs/block_dev.c:1503 1 lock held by in:imklog/178: 2 locks held by syz-executor.0/284: #0: ffff88800b61ac40 (&bdev->bd_mutex){+.+.}-{3:3}, at: __blkdev_get+0x457/0x1660 fs/block_dev.c:1503 #1: ffffffff85356848 (loop_ctl_mutex){+.+.}-{3:3}, at: lo_open+0x19/0xd0 drivers/block/loop.c:1886 1 lock held by syz-executor.6/14352: #0: ffff88800b61b8c0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x30/0x530 fs/block_dev.c:1826 1 lock held by syz-executor.6/14359: #0: ffff8880477800e0 (&type->s_umount_key#56/1){+.+.}-{3:3}, at: alloc_super+0x1e5/0xa90 fs/super.c:229 2 locks held by syz-executor.3/14356: #0: ffffffff85356848 (loop_ctl_mutex){+.+.}-{3:3}, at: loop_set_status+0x87/0xa10 drivers/block/loop.c:1351 #1: ffff8880477800e0 (&type->s_umount_key#59){++++}-{3:3}, at: __get_super.part.0+0x20d/0x2e0 fs/super.c:773 2 locks held by systemd-udevd/14453: #0: ffff88800b61b8c0 (&bdev->bd_mutex){+.+.}-{3:3}, at: __blkdev_get+0x457/0x1660 fs/block_dev.c:1503 #1: ffffffff85356848 (loop_ctl_mutex){+.+.}-{3:3}, at: lo_open+0x19/0xd0 drivers/block/loop.c:1886 =============================================