8021q: VLANs not supported on lo ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task syz-executor0:21807 blocked for more than 140 seconds. Not tainted 4.20.0-rc3+ #124 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D22840 21807 27035 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 __rwsem_down_write_failed_common+0xc9a/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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_nested+0xa9/0x130 kernel/locking/rwsem.c:195 inode_lock_nested include/linux/fs.h:792 [inline] filename_create+0x1b2/0x5b0 fs/namei.c:3635 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xda/0x310 fs/namei.c:3832 __do_sys_mkdirat fs/namei.c:3851 [inline] __se_sys_mkdirat fs/namei.c:3849 [inline] __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3849 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f9494191c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000100000000 RSI: 0000000020000480 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94941926d4 R13: 00000000004c2b03 R14: 00000000004d4750 R15: 00000000ffffffff INFO: task syz-executor0:21813 blocked for more than 140 seconds. Not tainted 4.20.0-rc3+ #124 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D24648 21813 27035 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 __rwsem_down_write_failed_common+0xc9a/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:757 [inline] do_last fs/namei.c:3321 [inline] path_openat+0x15c4/0x5150 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1279 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f9494170c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000044 RDI: 0000000020000a00 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94941716d4 R13: 00000000004bdbef R14: 00000000004cd070 R15: 00000000ffffffff INFO: task syz-executor0:21824 blocked for more than 140 seconds. Not tainted 4.20.0-rc3+ #124 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D22776 21824 27035 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 __rwsem_down_write_failed_common+0xc9a/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:757 [inline] do_last fs/namei.c:3321 [inline] path_openat+0x15c4/0x5150 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1279 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f949414fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000044 RDI: 0000000020000a00 RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94941506d4 R13: 00000000004bdbef R14: 00000000004cd070 R15: 00000000ffffffff INFO: task syz-executor0:21835 blocked for more than 140 seconds. Not tainted 4.20.0-rc3+ #124 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D24872 21835 27035 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x371/0x710 kernel/locking/rwsem-xadd.c:297 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+0x9b/0x120 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x49/0x80 fs/namei.c:1687 walk_component+0x92b/0x2590 fs/namei.c:1810 link_path_walk.part.40+0xa61/0x1530 fs/namei.c:2141 link_path_walk fs/namei.c:2072 [inline] path_parentat.isra.41+0x4f/0x160 fs/namei.c:2366 filename_parentat.isra.56+0x25f/0x570 fs/namei.c:2388 filename_create+0xbf/0x5b0 fs/namei.c:3618 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xda/0x310 fs/namei.c:3832 __do_sys_mkdirat fs/namei.c:3851 [inline] __se_sys_mkdirat fs/namei.c:3849 [inline] __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3849 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f949412ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000004 RBP: 000000000072c180 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f949412f6d4 R13: 00000000004c2b03 R14: 00000000004d4750 R15: 00000000ffffffff INFO: task syz-executor0:21836 blocked for more than 140 seconds. Not tainted 4.20.0-rc3+ #124 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D22776 21836 27035 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 __rwsem_down_write_failed_common+0xc9a/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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_nested+0xa9/0x130 kernel/locking/rwsem.c:195 inode_lock_nested include/linux/fs.h:792 [inline] filename_create+0x1b2/0x5b0 fs/namei.c:3635 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xda/0x310 fs/namei.c:3832 __do_sys_mkdirat fs/namei.c:3851 [inline] __se_sys_mkdirat fs/namei.c:3849 [inline] __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3849 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f949410dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000100000000 RSI: 0000000020000480 RDI: 0000000000000009 RBP: 000000000072c220 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f949410e6d4 R13: 00000000004c2b03 R14: 00000000004d4750 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1019: #0: 00000000a1446c01 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 1 lock held by rsyslogd/5880: #0: 00000000ea8fe9aa (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/5971: #0: 0000000064255ddf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000043e9e00d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5972: #0: 00000000542c0fc7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000d0bf2d18 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5973: #0: 000000002316d976 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000aedd241c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5974: #0: 00000000b6474e6b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f1623610 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5975: #0: 000000009b6fd77e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000ef6a5f84 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5976: #0: 0000000090c4ffe4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000d5179c3e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5977: #0: 0000000038cb3326 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000382a59a9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by syz-executor0/21797: 1 lock held by syz-executor0/21807: #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: filename_create+0x1b2/0x5b0 fs/namei.c:3635 1 lock held by syz-executor0/21813: #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: inode_lock include/linux/fs.h:757 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: do_last fs/namei.c:3321 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: path_openat+0x15c4/0x5150 fs/namei.c:3534 1 lock held by syz-executor0/21824: #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: inode_lock include/linux/fs.h:757 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: do_last fs/namei.c:3321 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: path_openat+0x15c4/0x5150 fs/namei.c:3534 1 lock held by syz-executor0/21835: #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#28){++++}, at: lookup_slow+0x49/0x80 fs/namei.c:1687 1 lock held by syz-executor0/21836: #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline] #0: 00000000aaa402e7 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: filename_create+0x1b2/0x5b0 fs/namei.c:3635 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc3+ #124 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+0x244/0x39d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a 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:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb51/0x1060 kernel/hung_task.c:289 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 21797 Comm: syz-executor0 Not tainted 4.20.0-rc3+ #124 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.940 msecs Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:182 [inline] RIP: 0010:__rcu_read_unlock+0x222/0x2e0 kernel/rcu/tree_plugin.h:429 Code: 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 0f b6 14 11 84 d2 74 09 80 fa 01 0f 8e 95 00 00 00 49 c1 ed 03 66 85 c0 66 41 89 47 80 <48> ba 00 00 00 00 00 fc ff df 41 c6 44 15 00 f8 0f 85 96 00 00 00 RSP: 0018:ffff8881a58b64b8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff11034b16c98 RCX: 1ffff11034b16c9c RDX: 0000000000000002 RSI: ffffffff819d46ec RDI: ffff8881a4b0e474 RBP: ffff8881a58b6588 R08: ffff8881a4b0e100 R09: ffffed103b5e5b67 R10: ffffed103b5e5b67 R11: ffff8881daf2db3b R12: ffff8881a4b0e100 R13: 1ffff11034b16c9c R14: ffff8881a4b0e470 R15: ffff8881a58b6560 FS: 00007f94941b3700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000042855000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_unlock include/linux/rcupdate.h:660 [inline] find_get_entry+0xa91/0x1120 mm/filemap.c:1445 pagecache_get_page+0x12f/0xf00 mm/filemap.c:1518 find_or_create_page include/linux/pagemap.h:322 [inline] grow_dev_page fs/buffer.c:947 [inline] grow_buffers fs/buffer.c:1016 [inline] __getblk_slow fs/buffer.c:1043 [inline] __getblk_gfp+0x3aa/0xd50 fs/buffer.c:1320 __bread_gfp+0x2d/0x310 fs/buffer.c:1354 sb_bread include/linux/buffer_head.h:307 [inline] fat__get_entry+0x5a6/0xa40 fs/fat/dir.c:101 fat_get_entry fs/fat/dir.c:129 [inline] fat_search_long+0x33b/0x1570 fs/fat/dir.c:479 vfat_find+0x16d/0x1a0 fs/fat/namei_vfat.c:697 vfat_lookup+0x107/0x640 fs/fat/namei_vfat.c:711 __lookup_slow+0x2b5/0x540 fs/namei.c:1671 lookup_slow+0x57/0x80 fs/namei.c:1688 walk_component+0x92b/0x2590 fs/namei.c:1810 link_path_walk.part.40+0xa61/0x1530 fs/namei.c:2141 link_path_walk fs/namei.c:2072 [inline] path_parentat.isra.41+0x4f/0x160 fs/namei.c:2366 filename_parentat.isra.56+0x25f/0x570 fs/namei.c:2388 filename_create+0xbf/0x5b0 fs/namei.c:3618 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xda/0x310 fs/namei.c:3832 __do_sys_mkdirat fs/namei.c:3851 [inline] __se_sys_mkdirat fs/namei.c:3849 [inline] __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3849 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f94941b2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94941b36d4 R13: 00000000004c2b03 R14: 00000000004d4750 R15: 00000000ffffffff