IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: 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.2:22419 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.2 D28648 22419 4006 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: 0033:0x7f26dd99d37b Code: Bad RIP value. RSP: 002b:00007ffcf0408150 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f26dd99d37b RDX: 0000001b2e120000 RSI: 0000001b2e125eb4 RDI: 0000000000000004 RBP: 00007f26ddb0d980 R08: 0000000000000000 R09: 000000003253460c R10: 0006e00429573bdc R11: 0000000000000293 R12: 00000000002d3eed R13: 00007ffcf0408250 R14: 00007f26ddb0c050 R15: 0000000000000032 INFO: task syz-executor.2:22428 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.2 D28184 22428 4006 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: 0033:0x7f26dd9eb5a9 Code: Bad RIP value. RSP: 002b:00007f26dbf5e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f26ddb0bf80 RCX: 00007f26dd9eb5a9 RDX: 0000000000000000 RSI: 0000000000000300 RDI: 0000000020000100 RBP: 00007f26dda467b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf04080ef R14: 00007f26dbf5e300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 000000005e43a9f8 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by in:imklog/7810: #0: 00000000922dd84a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 #1: 0000000063107222 (&obj_hash[i].lock){-.-.}, at: is_bpf_text_address+0x0/0x1b0 kernel/bpf/core.c:533 #2: 000000005e43a9f8 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #2: 000000005e43a9f8 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 2 locks held by agetty/8041: #0: 00000000d4e2d128 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000b0ff82de (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 2 locks held by kworker/u4:1/1055: #0: 0000000072f1030d (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline] #0: 0000000072f1030d (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841 #1: 000000005e43a9f8 (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:923 [inline] #1: 000000005e43a9f8 (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 3 locks held by kworker/u4:0/5182: #0: 0000000072f1030d (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 0000000072f1030d (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 000000005e43a9f8 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #1: 000000005e43a9f8 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 #2: 00000000d5b4925b (&wdev->mtx){+.+.}, at: sdata_lock net/mac80211/ieee80211_i.h:977 [inline] #2: 00000000d5b4925b (&wdev->mtx){+.+.}, at: ieee80211_ibss_work+0x85/0xe10 net/mac80211/ibss.c:1675 1 lock held by syz-executor.2/22419: #0: 0000000062b11dd8 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 0000000062b11dd8 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.2/22428: #0: 0000000028477035 (sb_writers#25){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 0000000028477035 (sb_writers#25){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 0000000062b11dd8 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 0000000062b11dd8 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.2/22885: #0: 0000000020473a77 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 0000000020473a77 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.2/22895: #0: 0000000092416b24 (sb_writers#25){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 0000000092416b24 (sb_writers#25){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 0000000020473a77 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 0000000020473a77 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.2/23310: #0: 00000000438e3f37 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000438e3f37 (&sb->s_type->i_mutex_key#34){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.2/23311: #0: 000000006ceb77c7 (sb_writers#25){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000006ceb77c7 (sb_writers#25){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000438e3f37 (&sb->s_type->i_mutex_key#34){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000438e3f37 (&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: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60