INFO: task syz-executor.5:5949 blocked for more than 140 seconds. Not tainted 4.14.120 #14 net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'loop2' (ffff8880a49fe0e0): kobject_uevent_env kobject: 'loop2' (ffff8880a49fe0e0): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.5 D29248 5949 5871 0x00000000 Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (ffff8880a49fe0e0): kobject_uevent_env kobject: 'loop2' (ffff8880a49fe0e0): fill_kobj_path: path = '/devices/virtual/block/loop2' schedule+0x92/0x1c0 kernel/sched/core.c:3427 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:572 [inline] rwsem_down_write_failed+0x5cd/0xbe0 kernel/locking/rwsem-xadd.c:601 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write_nested+0x57/0x90 kernel/locking/rwsem.c:174 inode_lock_nested include/linux/fs.h:750 [inline] SYSC_mq_unlink ipc/mqueue.c:874 [inline] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop2' (ffff8880a49fe0e0): kobject_uevent_env kobject: 'loop2' (ffff8880a49fe0e0): fill_kobj_path: path = '/devices/virtual/block/loop2' entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x2000000d RSP: 002b:00007f106816abd8 EFLAGS: 00000292 ORIG_RAX: 00000000000000f1 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 000000002000000d RDX: 5d49491cee4c8c39 RSI: 0000000000000021 RDI: 0000000020800000 RBP: 0000000000000066 R08: 0000000000000005 R09: 0000000000000006 R10: 0000000000000007 R11: 0000000000000292 R12: 000000000000000b R13: 000000000000000c R14: 000000000000000d R15: 00000000ffffffff kobject: 'loop2' (ffff8880a49fe0e0): kobject_uevent_env kobject: 'loop2' (ffff8880a49fe0e0): fill_kobj_path: path = '/devices/virtual/block/loop2' Showing all locks held in the system: 1 lock held by khungtaskd/1009: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4541 2 locks held by kworker/u4:4/2246: #0: ("events_unbound"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events_unbound"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events_unbound"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x76e/0x1600 kernel/workqueue.c:2085 #1: ((reaper_work).work){+.+.}, at: [] process_one_work+0x7ab/0x1600 kernel/workqueue.c:2089 2 locks held by getty/6970: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6971: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6972: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6973: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6974: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6975: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6976: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by kworker/u4:9/24240: #0: ("events_unbound"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events_unbound"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events_unbound"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x76e/0x1600 kernel/workqueue.c:2085 #1: ((&sub_info->work)){+.+.}, at: [] process_one_work+0x7ab/0x1600 kernel/workqueue.c:2089 4 locks held by syz-executor.5/18974: #0: (&dup_mmap_sem){.+.+}, at: [] dup_mmap kernel/fork.c:606 [inline] #0: (&dup_mmap_sem){.+.+}, at: [] dup_mm kernel/fork.c:1199 [inline] #0: (&dup_mmap_sem){.+.+}, at: [] copy_mm kernel/fork.c:1253 [inline] #0: (&dup_mmap_sem){.+.+}, at: [] copy_process.part.0+0x3caf/0x6940 kernel/fork.c:1755 #1: (&mm->mmap_sem){++++}, at: [] dup_mmap kernel/fork.c:607 [inline] #1: (&mm->mmap_sem){++++}, at: [] dup_mm kernel/fork.c:1199 [inline] #1: (&mm->mmap_sem){++++}, at: [] copy_mm kernel/fork.c:1253 [inline] #1: (&mm->mmap_sem){++++}, at: [] copy_process.part.0+0x3ccb/0x6940 kernel/fork.c:1755 #2: (&mm->mmap_sem/1){+.+.}, at: [] dup_mmap kernel/fork.c:616 [inline] #2: (&mm->mmap_sem/1){+.+.}, at: [] dup_mm kernel/fork.c:1199 [inline] #2: (&mm->mmap_sem/1){+.+.}, at: [] copy_mm kernel/fork.c:1253 [inline] #2: (&mm->mmap_sem/1){+.+.}, at: [] copy_process.part.0+0x3d05/0x6940 kernel/fork.c:1755 #3: (&mapping->i_mmap_rwsem){++++}, at: [] i_mmap_lock_write include/linux/fs.h:470 [inline] #3: (&mapping->i_mmap_rwsem){++++}, at: [] dup_mmap kernel/fork.c:681 [inline] #3: (&mapping->i_mmap_rwsem){++++}, at: [] dup_mm kernel/fork.c:1199 [inline] #3: (&mapping->i_mmap_rwsem){++++}, at: [] copy_mm kernel/fork.c:1253 [inline] #3: (&mapping->i_mmap_rwsem){++++}, at: [] copy_process.part.0+0x4147/0x6940 kernel/fork.c:1755 2 locks held by syz-executor.5/5855: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5857: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5858: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5859: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5860: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5862: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5863: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5864: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5865: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5866: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5867: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5868: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5869: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5870: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5871: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5872: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5873: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5874: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5875: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5876: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5877: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5878: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5879: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5880: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5881: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5882: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5883: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5884: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5885: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5886: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5887: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5889: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5890: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5891: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5892: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5893: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5894: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5895: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5896: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5897: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5898: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5899: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5900: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5901: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5902: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5903: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5904: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5905: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5906: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5907: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5908: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5909: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5910: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5911: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5912: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5913: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5914: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5915: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5916: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5917: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5918: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5919: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5920: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5921: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5922: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5923: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5924: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5925: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5926: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5927: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5928: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SYSC_mq_unlink ipc/mqueue.c:874 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] SyS_mq_unlink+0x1e4/0x4f0 ipc/mqueue.c:857 2 locks held by syz-executor.5/5929: #0: (sb_writers#21){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#21){.+.+}, at: [] mnt_want_write+0x3f/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:750 [inline] #1: (&sb->s_type->i_mutex_key#23/1){+.+.}, at: [