INFO: task syz-executor.1:7007 blocked for more than 143 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:24248 pid: 7007 ppid: 1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103 exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] synchronize_rcu_expedited+0x27e/0x610 kernel/rcu/tree_exp.h:838 namespace_unlock+0x1af/0x410 fs/namespace.c:1425 do_umount fs/namespace.c:1648 [inline] path_umount+0x7aa/0x12a0 fs/namespace.c:1735 ksys_umount fs/namespace.c:1754 [inline] __do_sys_umount fs/namespace.c:1759 [inline] __se_sys_umount fs/namespace.c:1757 [inline] __x64_sys_umount+0xfb/0x150 fs/namespace.c:1757 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460ba7 Code: Bad RIP value. RSP: 002b:00007ffd652d68f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000460ba7 RDX: 00000000004031b8 RSI: 0000000000000002 RDI: 00007ffd652d69a0 RBP: 0000000000000046 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000005 R11: 0000000000000246 R12: 00007ffd652d7a30 R13: 0000000002229a60 R14: 0000000000000000 R15: 00007ffd652d7a30 INFO: task syz-executor.5:7011 blocked for more than 144 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:24224 pid: 7011 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 synchronize_rcu_expedited+0x44b/0x610 kernel/rcu/tree_exp.h:854 bdi_remove_from_list mm/backing-dev.c:865 [inline] bdi_unregister+0x16b/0x590 mm/backing-dev.c:871 release_bdi+0xa1/0xc0 mm/backing-dev.c:893 kref_put include/linux/kref.h:65 [inline] bdi_put+0x72/0xa0 mm/backing-dev.c:901 generic_shutdown_super+0x2aa/0x370 fs/super.c:478 kill_anon_super+0x36/0x60 fs/super.c:1108 afs_kill_super+0xdf/0x180 fs/afs/super.c:544 deactivate_locked_super+0x94/0x160 fs/super.c:335 deactivate_super+0xad/0xd0 fs/super.c:366 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118 task_work_run+0xdd/0x190 kernel/task_work.c:141 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:165 [inline] exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:192 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:267 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460ba7 Code: Bad RIP value. RSP: 002b:00007fffcbaf4fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000460ba7 RDX: 00000000004031b8 RSI: 0000000000000002 RDI: 00007fffcbaf5090 RBP: 000000000000005e R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000005 R11: 0000000000000246 R12: 00007fffcbaf6120 R13: 0000000002907a60 R14: 0000000000000000 R15: 00007fffcbaf6120 INFO: task syz-executor.2:9428 blocked for more than 145 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27952 pid: 9428 ppid: 7002 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007fbef6788a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbef6788b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fbef6788ae0 R08: 00007fbef6788b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.2:9438 blocked for more than 146 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29232 pid: 9438 ppid: 7002 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007fbef6746a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbef6746b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fbef6746ae0 R08: 00007fbef6746b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.4:9429 blocked for more than 146 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27952 pid: 9429 ppid: 7010 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007f2beb55aa88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f2beb55ab20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f2beb55aae0 R08: 00007f2beb55ab20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.4:9443 blocked for more than 147 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29232 pid: 9443 ppid: 7010 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007f2beb518a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f2beb518b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f2beb518ae0 R08: 00007f2beb518b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.3:9426 blocked for more than 148 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27952 pid: 9426 ppid: 7006 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007fa266cc7a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa266cc7b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fa266cc7ae0 R08: 00007fa266cc7b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.3:9436 blocked for more than 149 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29232 pid: 9436 ppid: 7006 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007fa266c85a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa266c85b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fa266c85ae0 R08: 00007fa266c85b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.0:9430 blocked for more than 150 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27952 pid: 9430 ppid: 7009 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007f79bbaa6a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f79bbaa6b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f79bbaa6ae0 R08: 00007f79bbaa6b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 INFO: task syz-executor.0:9440 blocked for more than 150 seconds. Not tainted 5.9.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29232 pid: 9440 ppid: 7009 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0xec9/0x2280 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 afs_lookup_cell+0x4ba/0x1520 fs/afs/cell.c:296 afs_parse_source fs/afs/super.c:290 [inline] afs_parse_param+0x404/0x8d0 fs/afs/super.c:327 vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460bca Code: Bad RIP value. RSP: 002b:00007f79bba64a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f79bba64b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f79bba64ae0 R08: 00007f79bba64b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000040 R14: 0000000000000000 R15: 0000000020000640 Showing all locks held in the system: