IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready INFO: task syz-executor0:4473 blocked for more than 140 seconds. Not tainted 4.18.0-rc5+ #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D14712 4473 4043 0x00000004 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x63a/0x880 kernel/sched/core.c:3507 schedule+0x57/0x80 kernel/sched/core.c:3551 request_wait_answer fs/fuse/dev.c:463 [inline] __fuse_request_send+0x37a/0x570 fs/fuse/dev.c:483 fuse_request_send fs/fuse/dev.c:496 [inline] fuse_simple_request+0x22c/0x280 fs/fuse/dev.c:554 fuse_do_setattr+0x5e3/0x8a0 fs/fuse/dir.c:1680 fuse_setattr+0x176/0x2e0 fs/fuse/dir.c:1780 notify_change+0x46c/0x560 fs/attr.c:333 chmod_common+0xda/0x1a0 fs/open.c:552 do_fchmodat fs/open.c:590 [inline] __do_sys_chmod fs/open.c:608 [inline] __se_sys_chmod fs/open.c:606 [inline] __x64_sys_chmod+0x70/0xd0 fs/open.c:606 do_syscall_64+0x61/0x90 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x456a09 Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 RSP: 002b:00007fd8811e5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000005a RAX: ffffffffffffffda RBX: 00007fd8811e66d4 RCX: 0000000000456a09 RDX: 0000000000000000 RSI: 0000000000000150 RDI: 0000000020000140 RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004ca568 R14: 00000000004c1c78 R15: 0000000000000001 INFO: task syz-executor0:4474 blocked for more than 140 seconds. Not tainted 4.18.0-rc5+ #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D14720 4474 4043 0x00000004 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x63a/0x880 kernel/sched/core.c:3507 schedule+0x57/0x80 kernel/sched/core.c:3551 __rwsem_down_read_failed_common+0x115/0x1f0 kernel/locking/rwsem-xadd.c:269 rwsem_down_read_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:286 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x1b/0x30 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:725 [inline] lookup_slow fs/namei.c:1646 [inline] walk_component+0xf8/0x210 fs/namei.c:1769 lookup_last fs/namei.c:2237 [inline] path_lookupat+0x1bf/0x360 fs/namei.c:2287 filename_lookup+0xbb/0x280 fs/namei.c:2321 user_path_at_empty+0x40/0x50 fs/namei.c:2584 user_path_at include/linux/namei.h:57 [inline] vfs_statx fs/stat.c:185 [inline] vfs_lstat include/linux/fs.h:3106 [inline] __do_sys_newlstat fs/stat.c:350 [inline] __se_sys_newlstat+0x3b/0x260 fs/stat.c:344 __x64_sys_newlstat+0x1a/0x20 fs/stat.c:344 do_syscall_64+0x61/0x90 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x456a09 Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 RSP: 002b:00007fd8811c4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00007fd8811c56d4 RCX: 0000000000456a09 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000000 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d14f8 R14: 00000000004c6d78 R15: 0000000000000002 INFO: task syz-executor0:4476 blocked for more than 140 seconds. Not tainted 4.18.0-rc5+ #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D13936 4476 4043 0x00000004 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x63a/0x880 kernel/sched/core.c:3507 schedule+0x57/0x80 kernel/sched/core.c:3551 __rwsem_down_read_failed_common+0x115/0x1f0 kernel/locking/rwsem-xadd.c:269 rwsem_down_read_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:286 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x1b/0x30 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:725 [inline] lookup_slow fs/namei.c:1646 [inline] walk_component+0xf8/0x210 fs/namei.c:1769 lookup_last fs/namei.c:2237 [inline] path_lookupat+0x1bf/0x360 fs/namei.c:2287 filename_lookup+0xbb/0x280 fs/namei.c:2321 user_path_at_empty+0x40/0x50 fs/namei.c:2584 user_path_at include/linux/namei.h:57 [inline] vfs_statx fs/stat.c:185 [inline] vfs_lstat include/linux/fs.h:3106 [inline] __do_sys_newlstat fs/stat.c:350 [inline] __se_sys_newlstat+0x3b/0x260 fs/stat.c:344 __x64_sys_newlstat+0x1a/0x20 fs/stat.c:344 do_syscall_64+0x61/0x90 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x456a09 Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 RSP: 002b:00007fd881182c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00007fd8811836d4 RCX: 0000000000456a09 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000000 RBP: 0000000000930320 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d14f8 R14: 00000000004c6d78 R15: 0000000000000004 INFO: task syz-executor0:4477 blocked for more than 140 seconds. Not tainted 4.18.0-rc5+ #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D14784 4477 4043 0x00000004 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x63a/0x880 kernel/sched/core.c:3507 schedule+0x57/0x80 kernel/sched/core.c:3551 __rwsem_down_write_failed_common+0x1f2/0x390 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+0x28/0x40 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:715 [inline] chmod_common+0x7d/0x1a0 fs/open.c:546 do_fchmodat fs/open.c:590 [inline] __do_sys_chmod fs/open.c:608 [inline] __se_sys_chmod fs/open.c:606 [inline] __x64_sys_chmod+0x70/0xd0 fs/open.c:606 do_syscall_64+0x61/0x90 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x456a09 Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 RSP: 002b:00007fd881161c78 EFLAGS: 00000246 ORIG_RAX: 000000000000005a RAX: ffffffffffffffda RBX: 00007fd8811626d4 RCX: 0000000000456a09 RDX: 0000000000000000 RSI: 0000000000000150 RDI: 0000000020000140 RBP: 00000000009303c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004ca568 R14: 00000000004c1c78 R15: 0000000000000005 NMI backtrace for cpu 1 CPU: 1 PID: 677 Comm: khungtaskd Not tainted 4.18.0-rc5+ #30 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+0xae/0xf0 lib/dump_stack.c:113 nmi_cpu_backtrace lib/nmi_backtrace.c:103 [inline] nmi_trigger_cpumask_backtrace+0xdd/0x1e0 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:138 check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x4be/0x4d0 kernel/hung_task.c:252 kthread+0x127/0x140 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:55 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:97 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0x76/0xf0 arch/x86/kernel/process.c:500