INFO: task syz-executor916:4565 blocked for more than 120 seconds. Not tainted 4.18.0-rc1+ #10 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor916 D23560 4565 4538 0x20020000 Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x87c/0x1ed0 kernel/sched/core.c:3504 schedule+0xfb/0x450 kernel/sched/core.c:3548 __rwsem_down_write_failed_common+0x95d/0x1630 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0xaa/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:715 [inline] lock_mount+0x8c/0x2e0 fs/namespace.c:2088 do_add_mount+0x27/0x370 fs/namespace.c:2465 do_new_mount fs/namespace.c:2532 [inline] do_mount+0x193f/0x30e0 fs/namespace.c:2848 __do_compat_sys_mount fs/compat.c:125 [inline] __se_compat_sys_mount fs/compat.c:92 [inline] __ia32_compat_sys_mount+0x5d5/0x860 fs/compat.c:92 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f00cb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f7e9911c EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 0000000020000380 RCX: 0000000020026ff8 RDX: 0000000020000300 RSI: 0000000000000000 RDI: 00000000200007c0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor916:4566 blocked for more than 120 seconds. Not tainted 4.18.0-rc1+ #10 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor916 D24680 4566 4538 0x20020000 Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x87c/0x1ed0 kernel/sched/core.c:3504 schedule+0xfb/0x450 kernel/sched/core.c:3548 __rwsem_down_write_failed_common+0x95d/0x1630 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0xaa/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:715 [inline] lock_mount+0x8c/0x2e0 fs/namespace.c:2088 do_loopback fs/namespace.c:2221 [inline] do_mount+0xed8/0x30e0 fs/namespace.c:2842 __do_compat_sys_mount fs/compat.c:125 [inline] __se_compat_sys_mount fs/compat.c:92 [inline] __ia32_compat_sys_mount+0x5d5/0x860 fs/compat.c:92 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f00cb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f7e7811c EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 0000000020000280 RDX: 0000000020000040 RSI: 0000000000001004 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor916:4603 blocked for more than 120 seconds. Not tainted 4.18.0-rc1+ #10 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor916 D23560 4603 4538 0x20020000 Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x87c/0x1ed0 kernel/sched/core.c:3504 schedule+0xfb/0x450 kernel/sched/core.c:3548 __rwsem_down_write_failed_common+0x95d/0x1630 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0xaa/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:715 [inline] lock_mount+0x8c/0x2e0 fs/namespace.c:2088 do_add_mount+0x27/0x370 fs/namespace.c:2465 do_new_mount fs/namespace.c:2532 [inline] do_mount+0x193f/0x30e0 fs/namespace.c:2848 __do_compat_sys_mount fs/compat.c:125 [inline] __se_compat_sys_mount fs/compat.c:92 [inline] __ia32_compat_sys_mount+0x5d5/0x860 fs/compat.c:92 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f00cb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f7d4f11c EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 0000000020000380 RCX: 0000000020026ff8 RDX: 0000000020000300 RSI: 0000000000000000 RDI: 00000000200007c0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/898: #0: 00000000c414f0ce (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x428 kernel/locking/lockdep.c:4461 1 lock held by rsyslogd/4409: 2 locks held by getty/4499: #0: 0000000052572385 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000bda1831f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by getty/4500: #0: 0000000073af45b8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000065b3e359 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by getty/4501: #0: 000000005c182921 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000000ca2f8bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by getty/4502: #0: 000000006ad82693 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000d39082ca (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by getty/4503: #0: 00000000b10b2d30 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000007abb0c08 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by getty/4504: #0: 00000000c52c725a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000006734496e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by getty/4505: #0: 00000000d822d02e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000031cb3e92 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2131 2 locks held by sshd/4527: 2 locks held by syz-executor916/4552: #0: 00000000b4bbe9ed (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000b4bbe9ed (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 2 locks held by syz-executor916/4559: #0: 00000000b14078c4 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000b14078c4 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4568: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4577: #0: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_change_type fs/namespace.c:2171 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_mount+0x1289/0x30e0 fs/namespace.c:2844 2 locks held by syz-executor916/4587: #0: 0000000031b9940e (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 0000000031b9940e (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4596: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4605: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4614: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4621: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4632: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4643: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4644: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4645: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4661: #0: 000000000da2c2dd (sb_writers#6){.+.+}, at: sb_start_write include/linux/fs.h:1554 [inline] #0: 000000000da2c2dd (sb_writers#6){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:386 #1: 0000000031b9940e (&type->i_mutex_dir_key/1){+.+.}, at: inode_lock_nested include/linux/fs.h:750 [inline] #1: 0000000031b9940e (&type->i_mutex_dir_key/1){+.+.}, at: filename_create+0x1b2/0x5b0 fs/namei.c:3645 1 lock held by syz-executor916/4666: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4667: #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000004bde774e (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4540: 1 lock held by syz-executor916/4549: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4558: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4567: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4575: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4584: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4592: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4601: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4610: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4617: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4629: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4635: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4636: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4642: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4658: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4659: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4664: #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d1de9667 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4548: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4556: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4564: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4570: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4579: #0: 000000002bdd4129 (sb_writers#9){.+.+}, at: sb_start_write include/linux/fs.h:1554 [inline] #0: 000000002bdd4129 (sb_writers#9){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:386 #1: 00000000736931f7 (&sb->s_type->i_mutex_key#15/1){+.+.}, at: inode_lock_nested include/linux/fs.h:750 [inline] #1: 00000000736931f7 (&sb->s_type->i_mutex_key#15/1){+.+.}, at: filename_create+0x1b2/0x5b0 fs/namei.c:3645 2 locks held by syz-executor916/4589: #0: 00000000c62309e6 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000c62309e6 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4598: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4607: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4619: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4626: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4627: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4631: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4639: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4640: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4652: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4653: #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000736931f7 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4542: 1 lock held by syz-executor916/4554: #0: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_change_type fs/namespace.c:2171 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_mount+0x1289/0x30e0 fs/namespace.c:2844 1 lock held by syz-executor916/4562: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4576: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4586: #0: 00000000cb33475c (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000cb33475c (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4595: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4604: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4613: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4620: #0: 00000000049cee94 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000049cee94 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4628: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4641: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4656: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4657: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4660: #0: 00000000cb33475c (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000cb33475c (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4665: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4672: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4673: #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f4346b16 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4550: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4560: #0: 000000000da2c2dd (sb_writers#6){.+.+}, at: sb_start_write include/linux/fs.h:1554 [inline] #0: 000000000da2c2dd (sb_writers#6){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:386 #1: 00000000623dbd29 (&type->i_mutex_dir_key/1){+.+.}, at: inode_lock_nested include/linux/fs.h:750 [inline] #1: 00000000623dbd29 (&type->i_mutex_dir_key/1){+.+.}, at: filename_create+0x1b2/0x5b0 fs/namei.c:3645 1 lock held by syz-executor916/4572: #0: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_change_type fs/namespace.c:2171 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_mount+0x1289/0x30e0 fs/namespace.c:2844 1 lock held by syz-executor916/4581: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4590: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4599: #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 2 locks held by syz-executor916/4608: #0: 00000000a92cbf78 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000a92cbf78 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4615: #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4622: #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4633: #0: 000000000da2c2dd (sb_writers#6){.+.+}, at: sb_start_write include/linux/fs.h:1554 [inline] #0: 000000000da2c2dd (sb_writers#6){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:386 #1: 00000000623dbd29 (&type->i_mutex_dir_key/1){+.+.}, at: inode_lock_nested include/linux/fs.h:750 [inline] #1: 00000000623dbd29 (&type->i_mutex_dir_key/1){+.+.}, at: filename_create+0x1b2/0x5b0 fs/namei.c:3645 1 lock held by syz-executor916/4646: #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000623dbd29 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4647: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4654: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4662: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4668: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4669: #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000000292e448 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4539: 1 lock held by syz-executor916/4546: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4551: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4565: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4566: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4573: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4574: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4582: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4583: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4585: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4593: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4594: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4602: #0: 00000000e207aae8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000e207aae8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4603: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4611: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4612: #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000003029b6a3 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4544: 1 lock held by syz-executor916/4547: #0: 000000005f8b0b51 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005f8b0b51 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4555: #0: 00000000e564d044 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000e564d044 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4563: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4569: #0: 00000000e564d044 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000e564d044 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4578: #0: 00000000d293b725 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000d293b725 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4588: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4597: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4606: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4618: #0: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_change_type fs/namespace.c:2171 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_mount+0x1289/0x30e0 fs/namespace.c:2844 1 lock held by syz-executor916/4624: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4625: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4630: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4637: #0: 00000000f761d322 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f761d322 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4638: #0: 00000000f761d322 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 00000000f761d322 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 2 locks held by syz-executor916/4650: #0: 000000005f8b0b51 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005f8b0b51 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4651: #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000005a9455f8 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4553: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4561: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4571: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4580: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4591: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4600: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4609: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4616: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4623: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4634: #0: 0000000021c25037 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 0000000021c25037 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4648: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 1 lock held by syz-executor916/4649: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 2 locks held by syz-executor916/4655: #0: 0000000022ac2e63 (&sb->s_type->i_mutex_key#15){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 0000000022ac2e63 (&sb->s_type->i_mutex_key#15){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 #1: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #1: 000000004debc30c (namespace_sem){++++}, at: lock_mount+0xdc/0x2e0 fs/namespace.c:2093 1 lock held by syz-executor916/4663: #0: 000000004debc30c (namespace_sem){++++}, at: namespace_lock fs/namespace.c:1431 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_change_type fs/namespace.c:2171 [inline] #0: 000000004debc30c (namespace_sem){++++}, at: do_mount+0x1289/0x30e0 fs/namespace.c:2844 2 locks held by syz-executor916/4670: 1 lock held by syz-executor916/4671: #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:715 [inline] #0: 000000001d3dcc93 (&type->i_mutex_dir_key){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2088 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 898 Comm: khungtaskd Not tainted 4.18.0-rc1+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x9c4/0xf80 kernel/hung_task.c:252 kthread+0x345/0x410 kernel/kthread.c:240 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4545 Comm: syz-executor916 Not tainted 4.18.0-rc1+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:timespec64_trunc+0x106/0x180 fs/inode.c:2120 Code: e8 48 99 48 f7 fb 49 29 d5 e8 76 62 b0 ff 48 b8 00 00 00 00 00 fc ff df 48 8d 7c 24 28 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5a <48> b9 00 00 00 00 00 fc ff df 4c 89 6c 24 28 48 8b 44 24 20 48 8b RSP: 0018:ffff8801ade07880 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff81cb47d4 RDX: 1ffff10035bc0f15 RSI: ffffffff81cb482a RDI: ffff8801ade078a8 RBP: ffff8801ade07900 R08: ffff8801ac330240 R09: 0000000000000006 R10: ffff8801ac330240 R11: 0000000000000000 R12: 1ffff10035bc0f10 R13: 000000001a16b600 R14: 000000005b27422a R15: ffff8801a871c6b0 FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:00000000097a8900 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000007ab000 CR3: 00000001d865c000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: current_time+0x126/0x1b0 fs/inode.c:2143 file_update_time+0x160/0x640 fs/inode.c:1853 pipe_write+0xa84/0xeb0 fs/pipe.c:481 call_write_iter include/linux/fs.h:1795 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6c6/0x9f0 fs/read_write.c:487 vfs_write+0x1f8/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __ia32_sys_write+0x71/0xb0 fs/read_write.c:607 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f00cb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000ffefba5c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000080c883b RDX: 0000000000000012 RSI: 0000000000000000 RDI: 000000000000005b RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000