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.2:6989 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27568 6989 6114 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:1696 walk_component+0x680/0x21a0 fs/namei.c:1825 lookup_last fs/namei.c:2293 [inline] path_lookupat.isra.40+0x17f/0x810 fs/namei.c:2343 filename_lookup.part.53+0x15b/0x340 fs/namei.c:2377 filename_lookup fs/namei.c:2370 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2631 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:00007f41bb269c78 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: 00007f41bb26a6d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff INFO: task syz-executor.2:6994 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28768 6994 6114 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:00007f41bb248c78 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: 00007f41bb2496d4 R13: 00000000004c8d0e R14: 00000000004dfc50 R15: 00000000ffffffff INFO: task syz-executor.2:6999 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28912 6999 6114 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:00007f41bb227c78 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: 00007f41bb2286d4 R13: 00000000004c595e R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.2:7024 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28144 7024 6114 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:00007f41bb206c78 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: 00007f41bb2076d4 R13: 00000000004c5932 R14: 00000000004da0a0 R15: 00000000ffffffff INFO: task syz-executor.2:7025 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28920 7025 6114 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:1674 walk_component+0x680/0x21a0 fs/namei.c:1825 lookup_last fs/namei.c:2293 [inline] path_lookupat.isra.40+0x17f/0x810 fs/namei.c:2343 filename_lookup.part.53+0x15b/0x340 fs/namei.c:2377 filename_lookup fs/namei.c:2370 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2631 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:00007f41bb1e5c78 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: 00007f41bb1e66d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff INFO: task syz-executor.3:7013 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27552 7013 6115 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:1696 walk_component+0x680/0x21a0 fs/namei.c:1825 lookup_last fs/namei.c:2293 [inline] path_lookupat.isra.40+0x17f/0x810 fs/namei.c:2343 filename_lookup.part.53+0x15b/0x340 fs/namei.c:2377 filename_lookup fs/namei.c:2370 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2631 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:00007f95e89fdc78 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: 00007f95e89fe6d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff INFO: task syz-executor.3:7018 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29328 7018 6115 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:00007f95e89dcc78 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: 00007f95e89dd6d4 R13: 00000000004c595e R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.3:7020 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29048 7020 6115 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:00007f95e89bbc78 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: 00007f95e89bc6d4 R13: 00000000004c8d0e R14: 00000000004dfc50 R15: 00000000ffffffff INFO: task syz-executor.3:7071 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28304 7071 6115 0x00000006 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:00007f95e899ac78 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: 00007f95e899b6d4 R13: 00000000004c5932 R14: 00000000004da0a0 R15: 00000000ffffffff INFO: task syz-executor.3:7072 blocked for more than 140 seconds. Not tainted 4.14.174-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27920 7072 6115 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:1674 walk_component+0x680/0x21a0 fs/namei.c:1825 lookup_last fs/namei.c:2293 [inline] path_lookupat.isra.40+0x17f/0x810 fs/namei.c:2343 filename_lookup.part.53+0x15b/0x340 fs/namei.c:2377 filename_lookup fs/namei.c:2370 [inline] user_path_at_empty+0x39/0x40 fs/namei.c:2631 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:00007f95e8979c78 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: 00007f95e897a6d4 R13: 00000000004e585b R14: 00000000004deb88 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1012: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4544 1 lock held by in:imklog/5602: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x8e/0xc0 fs/file.c:769 2 locks held by syz-executor.2/6989: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 2 locks held by syz-executor.2/6994: #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#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.2/6999: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.2/7024: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.2/7025: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 2 locks held by syz-executor.3/7013: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 1 lock held by syz-executor.3/7018: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.3/7020: #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#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.3/7071: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.3/7072: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 2 locks held by syz-executor.5/7035: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 2 locks held by syz-executor.5/7040: #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#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.5/7043: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.5/7079: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.5/7080: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 2 locks held by syz-executor.4/7052: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 2 locks held by syz-executor.4/7058: #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#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.4/7060: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.4/7086: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.4/7087: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 2 locks held by syz-executor.0/7061: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 2 locks held by syz-executor.0/7070: #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#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.0/7077: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.0/7094: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.0/7095: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 2 locks held by syz-executor.1/7101: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0x9f/0xd0 fs/fuse/inode.c:365 1 lock held by syz-executor.1/7106: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 2 locks held by syz-executor.1/7107: #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#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] fuse_reverse_inval_entry+0x92/0x5c0 fs/fuse/dir.c:972 1 lock held by syz-executor.1/7108: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:718 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lock_mount+0x82/0x290 fs/namespace.c:2119 1 lock held by syz-executor.1/7109: #0: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock_shared include/linux/fs.h:728 [inline] #0: (&type->i_mutex_dir_key#8){++++}, at: [] lookup_slow+0x123/0x3f0 fs/namei.c:1674 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1012 Comm: khungtaskd Not tainted 4.14.174-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 CPU: 0 PID: 789 Comm: kworker/u4:3 Not tainted 4.14.174-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker task: ffff8880a8b58180 task.stack: ffff8880a8b60000 RIP: 0010:__lock_acquire+0x1e7/0x4500 kernel/locking/lockdep.c:3365 RSP: 0018:ffff8880a8b67a20 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffff11013fb8452 RSI: 0000000000000000 RDI: ffffffff87916980 RBP: ffff8880a8b67bf0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffff8880a8b58180 R12: ffff88809fdc2290 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f998b478000 CR3: 000000009555b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x173/0x400 kernel/locking/lockdep.c:3994 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:176 spin_lock_bh include/linux/spinlock.h:322 [inline] batadv_nc_purge_paths+0xc0/0x2f0 net/batman-adv/network-coding.c:450 batadv_nc_worker+0x228/0x630 net/batman-adv/network-coding.c:729 process_one_work+0x79e/0x16c0 kernel/workqueue.c:2116 worker_thread+0xcc/0xee0 kernel/workqueue.c:2250 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 f2 30 00 00 49 81 3c 24 60 b2 7a 88 <0f> 84 30 ff ff ff 83 fe 01 0f 87 33 ff ff ff 48 b8 00 00 00 00