IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Bluetooth: hci7: command 0x0409 tx timeout Bluetooth: hci7: command 0x041b tx timeout Bluetooth: hci7: command 0x040f tx timeout Bluetooth: hci7: command 0x0419 tx timeout INFO: task syz-executor.4:28635 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28648 28635 25993 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 filp_close+0xb4/0x160 fs/open.c:1162 __close_fd+0x133/0x200 fs/file.c:636 __do_sys_close fs/open.c:1181 [inline] __se_sys_close fs/open.c:1179 [inline] __x64_sys_close+0x69/0x100 fs/open.c:1179 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe9c60e237b Code: Bad RIP value. RSP: 002b:00007ffde76f1fe0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007fe9c60e237b RDX: 0000001b2c420000 RSI: 0000001b2c425e6c RDI: 0000000000000005 RBP: 00007fe9c6252980 R08: 0000000000000000 R09: 000000003253460c R10: 00128ab613aeeb33 R11: 0000000000000293 R12: 000000000007f97d R13: 00007ffde76f20e0 R14: 00007fe9c6250f80 R15: 0000000000000032 INFO: task syz-executor.4:28645 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28008 28645 25993 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 fuse_wait_on_page_writeback fs/fuse/file.c:383 [inline] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 fs/fuse/file.c:379 fuse_launder_page fs/fuse/file.c:2033 [inline] fuse_launder_page+0xb6/0xe0 fs/fuse/file.c:2026 do_launder_page mm/truncate.c:655 [inline] invalidate_inode_pages2_range+0x795/0x1110 mm/truncate.c:725 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x254/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe9c61305a9 Code: Bad RIP value. RSP: 002b:00007fe9c4a82168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fe9c6251050 RCX: 00007fe9c61305a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007fe9c618b580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde76f1f7f R14: 00007fe9c4a82300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:1/23: 1 lock held by khungtaskd/1571: #0: 00000000cf746e64 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by systemd-journal/4694: #0: 00000000a20e7847 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline] #0: 00000000a20e7847 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841 1 lock held by syz-executor.4/28635: #0: 000000008265d642 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 000000008265d642 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.4/28645: #0: 00000000f0068301 (sb_writers#27){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000f0068301 (sb_writers#27){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000008265d642 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000008265d642 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.4/29031: #0: 00000000752860c3 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000752860c3 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.4/29037: #0: 00000000096f5e13 (sb_writers#27){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000096f5e13 (sb_writers#27){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000752860c3 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000752860c3 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.4/29335: #0: 00000000acb16410 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000acb16410 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.4/29341: #0: 00000000b84f5c33 (sb_writers#27){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000b84f5c33 (sb_writers#27){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000acb16410 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000acb16410 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4694 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:21 [inline] RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:350 [inline] RIP: 0010:rcu_is_watching+0x4b/0xc0 kernel/rcu/tree.c:1025 Code: ff df 89 c0 48 8d 3c c5 00 af cf 89 48 89 f9 48 c1 e9 03 80 3c 11 00 75 6d 48 03 1c c5 00 af cf 89 be 04 00 00 00 48 8d 6b 10 <48> 89 ef e8 5d c2 46 00 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffff8880a089fb18 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffff8880ba022ac0 RCX: 1ffffffff139f5e0 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffffff89cfaf00 RBP: ffff8880ba022ad0 R08: 00000000594ea6fa R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a089fc38 R13: 0000000000000040 R14: 0000000000000000 R15: ffff8880a089fc38 FS: 00007f2501b2b8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f24fe6ef028 CR3: 00000000a0c60000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock include/linux/rcupdate.h:628 [inline] path_init+0xbbb/0x19d0 fs/namei.c:2180 path_parentat+0x22/0x140 fs/namei.c:2366 filename_parentat+0x198/0x590 fs/namei.c:2389 filename_create+0x9e/0x490 fs/namei.c:3621 user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xa0/0x2d0 fs/namei.c:3834 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f2500de6687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff536a5368 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff536a83d0 RCX: 00007f2500de6687 RDX: 0000000000000000 RSI: 00000000000001ed RDI: 00005570f0ad18a0 RBP: 00007fff536a53a0 R08: 00005570ef2ae3e5 R09: 0000000000000018 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00005570f0ad18a0 R15: 00007fff536a59e0