IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 INFO: task syz-executor.1:6789 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27072 6789 6755 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 request_wait_answer+0x2e3/0x600 fs/fuse/dev.c:478 __fuse_request_send+0xff/0x190 fs/fuse/dev.c:498 fuse_request_send+0x48/0x60 fs/fuse/dev.c:511 fuse_simple_request+0x2b4/0x610 fs/fuse/dev.c:569 fuse_lookup_name+0x238/0x570 fs/fuse/dir.c:330 fuse_lookup+0xe4/0x380 fs/fuse/dir.c:368 lookup_slow+0x20f/0x3f0 fs/namei.c:1695 walk_component+0x680/0x21b0 fs/namei.c:1824 lookup_last fs/namei.c:2292 [inline] path_lookupat.isra.41+0x17f/0x810 fs/namei.c:2342 filename_lookup.part.54+0x15b/0x340 fs/namei.c:2376 filename_lookup fs/namei.c:2369 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2630 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0xb6/0x130 fs/stat.c:185 vfs_stat include/linux/fs.h:3060 [inline] SYSC_newstat+0x7d/0xc0 fs/stat.c:337 SyS_newstat+0x9/0x10 fs/stat.c:333 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fd3baf41c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459519 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd3baf426d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff INFO: task syz-executor.1:6790 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29328 6790 6755 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x54f/0xb50 kernel/locking/rwsem-xadd.c:617 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+0x53/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:718 [inline] lock_mount+0x82/0x290 fs/namespace.c:2119 do_add_mount+0x22/0x310 fs/namespace.c:2496 do_new_mount fs/namespace.c:2563 [inline] do_mount+0x12cf/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fd3baf20c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459519 RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000000 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007fd3baf216d4 R13: 00000000004c595e R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.1:6791 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28592 6791 6755 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x54f/0xb50 kernel/locking/rwsem-xadd.c:617 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+0x53/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:718 [inline] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 fuse_notify_delete fs/fuse/dev.c:1562 [inline] fuse_notify fs/fuse/dev.c:1796 [inline] fuse_dev_do_write+0xe58/0x2310 fs/fuse/dev.c:1871 fuse_dev_write+0x11a/0x180 fs/fuse/dev.c:1955 call_write_iter include/linux/fs.h:1777 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x413/0x840 fs/read_write.c:482 vfs_write+0x150/0x4f0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0x100/0x250 fs/read_write.c:582 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fd3baeffc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459519 RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd3baf006d4 R13: 00000000004c8d0e R14: 00000000004dfc50 R15: 00000000ffffffff INFO: task syz-executor.1:6793 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28304 6793 6755 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x54f/0xb50 kernel/locking/rwsem-xadd.c:617 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+0x53/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:718 [inline] lock_mount+0x82/0x290 fs/namespace.c:2119 do_add_mount+0x22/0x310 fs/namespace.c:2496 do_new_mount fs/namespace.c:2563 [inline] do_mount+0x12cf/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fd3baebdc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459519 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075c1c0 R08: 0000000020000400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd3baebe6d4 R13: 00000000004c5932 R14: 00000000004da0a0 R15: 00000000ffffffff INFO: task syz-executor.1:6794 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28920 6794 6755 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x1fc/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:66 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:728 [inline] lookup_slow+0x123/0x3f0 fs/namei.c:1673 walk_component+0x680/0x21b0 fs/namei.c:1824 lookup_last fs/namei.c:2292 [inline] path_lookupat.isra.41+0x17f/0x810 fs/namei.c:2342 filename_lookup.part.54+0x15b/0x340 fs/namei.c:2376 filename_lookup fs/namei.c:2369 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2630 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0xb6/0x130 fs/stat.c:185 vfs_stat include/linux/fs.h:3060 [inline] SYSC_newstat+0x7d/0xc0 fs/stat.c:337 SyS_newstat+0x9/0x10 fs/stat.c:333 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fd3bae9cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459519 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580 RBP: 000000000075c268 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd3bae9d6d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff INFO: task syz-executor.0:6812 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27928 6812 6763 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 request_wait_answer+0x2e3/0x600 fs/fuse/dev.c:478 __fuse_request_send+0xff/0x190 fs/fuse/dev.c:498 fuse_request_send+0x48/0x60 fs/fuse/dev.c:511 fuse_simple_request+0x2b4/0x610 fs/fuse/dev.c:569 fuse_lookup_name+0x238/0x570 fs/fuse/dir.c:330 fuse_lookup+0xe4/0x380 fs/fuse/dir.c:368 lookup_slow+0x20f/0x3f0 fs/namei.c:1695 walk_component+0x680/0x21b0 fs/namei.c:1824 lookup_last fs/namei.c:2292 [inline] path_lookupat.isra.41+0x17f/0x810 fs/namei.c:2342 filename_lookup.part.54+0x15b/0x340 fs/namei.c:2376 filename_lookup fs/namei.c:2369 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2630 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0xb6/0x130 fs/stat.c:185 vfs_stat include/linux/fs.h:3060 [inline] SYSC_newstat+0x7d/0xc0 fs/stat.c:337 SyS_newstat+0x9/0x10 fs/stat.c:333 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fb30446ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459519 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb30446b6d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff INFO: task syz-executor.0:6815 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29048 6815 6763 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x54f/0xb50 kernel/locking/rwsem-xadd.c:617 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+0x53/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:718 [inline] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 fuse_notify_delete fs/fuse/dev.c:1562 [inline] fuse_notify fs/fuse/dev.c:1796 [inline] fuse_dev_do_write+0xe58/0x2310 fs/fuse/dev.c:1871 fuse_dev_write+0x11a/0x180 fs/fuse/dev.c:1955 call_write_iter include/linux/fs.h:1777 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x413/0x840 fs/read_write.c:482 vfs_write+0x150/0x4f0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0x100/0x250 fs/read_write.c:582 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fb304449c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459519 RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb30444a6d4 R13: 00000000004c8d0e R14: 00000000004dfc50 R15: 00000000ffffffff INFO: task syz-executor.0:6817 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28912 6817 6763 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x54f/0xb50 kernel/locking/rwsem-xadd.c:617 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+0x53/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:718 [inline] lock_mount+0x82/0x290 fs/namespace.c:2119 do_add_mount+0x22/0x310 fs/namespace.c:2496 do_new_mount fs/namespace.c:2563 [inline] do_mount+0x12cf/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fb304428c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459519 RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000000 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007fb3044296d4 R13: 00000000004c595e R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.0:6840 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27520 6840 6763 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x54f/0xb50 kernel/locking/rwsem-xadd.c:617 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+0x53/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:718 [inline] lock_mount+0x82/0x290 fs/namespace.c:2119 do_add_mount+0x22/0x310 fs/namespace.c:2496 do_new_mount fs/namespace.c:2563 [inline] do_mount+0x12cf/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fb304407c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459519 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075c118 R08: 0000000020000400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3044086d4 R13: 00000000004c5932 R14: 00000000004da0a0 R15: 00000000ffffffff INFO: task syz-executor.0:6841 blocked for more than 140 seconds. Not tainted 4.14.168-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28920 6841 6763 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x1fc/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:66 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:728 [inline] lookup_slow+0x123/0x3f0 fs/namei.c:1673 walk_component+0x680/0x21b0 fs/namei.c:1824 lookup_last fs/namei.c:2292 [inline] path_lookupat.isra.41+0x17f/0x810 fs/namei.c:2342 filename_lookup.part.54+0x15b/0x340 fs/namei.c:2376 filename_lookup fs/namei.c:2369 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2630 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0xb6/0x130 fs/stat.c:185 vfs_stat include/linux/fs.h:3060 [inline] SYSC_newstat+0x7d/0xc0 fs/stat.c:337 SyS_newstat+0x9/0x10 fs/stat.c:333 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fb3043e6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459519 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580 RBP: 000000000075c1c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3043e76d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1013: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4544 2 locks held by getty/6638: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6639: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6640: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6641: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6642: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6643: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6644: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.1/6789: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 1 lock held by syz-executor.1/6790: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.1/6791: #0: (&fc->killsb){.+.+}, at: [] fuse_notify_delete fs/fuse/dev.c:1559 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_notify fs/fuse/dev.c:1796 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1988/0x2310 fs/fuse/dev.c:1871 #1: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#7){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.1/6793: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.1/6794: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 2 locks held by syz-executor.0/6812: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 2 locks held by syz-executor.0/6815: #0: (&fc->killsb){.+.+}, at: [] fuse_notify_delete fs/fuse/dev.c:1559 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_notify fs/fuse/dev.c:1796 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1988/0x2310 fs/fuse/dev.c:1871 #1: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#7){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.0/6817: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.0/6840: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.0/6841: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 2 locks held by syz-executor.5/6814: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 2 locks held by syz-executor.5/6816: #0: (&fc->killsb){.+.+}, at: [] fuse_notify_delete fs/fuse/dev.c:1559 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_notify fs/fuse/dev.c:1796 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1988/0x2310 fs/fuse/dev.c:1871 #1: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#7){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.5/6818: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.5/6843: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.5/6844: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 2 locks held by syz-executor.3/6827: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 1 lock held by syz-executor.3/6830: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.3/6832: #0: (&fc->killsb){.+.+}, at: [] fuse_notify_delete fs/fuse/dev.c:1559 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_notify fs/fuse/dev.c:1796 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1988/0x2310 fs/fuse/dev.c:1871 #1: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#7){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.3/6855: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 1 lock held by syz-executor.3/6856: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.2/6852: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 1 lock held by syz-executor.2/6853: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.2/6854: #0: (&fc->killsb){.+.+}, at: [] fuse_notify_delete fs/fuse/dev.c:1559 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_notify fs/fuse/dev.c:1796 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1988/0x2310 fs/fuse/dev.c:1871 #1: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#7){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.2/6861: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.2/6862: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 2 locks held by syz-executor.4/6866: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 1 lock held by syz-executor.4/6868: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.4/6869: #0: (&fc->killsb){.+.+}, at: [] fuse_notify_delete fs/fuse/dev.c:1559 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_notify fs/fuse/dev.c:1796 [inline] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1988/0x2310 fs/fuse/dev.c:1871 #1: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#7){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.4/6870: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.4/6871: #0: (&type->i_mutex_dir_key#7){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#7){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1673 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1013 Comm: khungtaskd Not tainted 4.14.168-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xf7/0x13b lib/dump_stack.c:58 nmi_cpu_backtrace.cold.4+0x3e/0x76 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xe5/0x119 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:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x522/0xb40 kernel/hung_task.c:274 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8620e832