Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.4:9733 blocked for more than 140 seconds. Not tainted 4.19.176-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29952 9733 8132 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_nested+0x51/0x90 kernel/locking/rwsem.c:194 inode_lock_nested include/linux/fs.h:783 [inline] filename_create+0x15a/0x490 fs/namei.c:3638 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: 0033:0x466019 Code: 44 24 08 48 89 44 24 18 48 8b 4c 24 30 48 89 0c 24 48 8b 4c 24 38 48 89 4c 24 08 48 89 44 24 10 e8 2c a2 fa ff 48 8b 44 24 18 <48> 89 44 24 40 48 8b 6c 24 20 48 83 c4 28 c3 e8 f3 47 00 00 eb 91 RSP: 002b:00007f134b264188 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466019 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00000000004bd067 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007ffc7ffcea4f R14: 00007f134b264300 R15: 0000000000022000 INFO: task syz-executor.4:9773 blocked for more than 140 seconds. Not tainted 4.19.176-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29464 9773 8132 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_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:758 [inline] lookup_slow fs/namei.c:1688 [inline] walk_component+0x798/0xda0 fs/namei.c:1811 lookup_last fs/namei.c:2274 [inline] path_lookupat+0x1ff/0x8d0 fs/namei.c:2319 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349 user_path_at include/linux/namei.h:57 [inline] ksys_chdir+0x84/0x1d0 fs/open.c:458 __do_sys_chdir fs/open.c:480 [inline] __se_sys_chdir fs/open.c:478 [inline] __x64_sys_chdir+0x2d/0x40 fs/open.c:478 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466019 Code: 44 24 08 48 89 44 24 18 48 8b 4c 24 30 48 89 0c 24 48 8b 4c 24 38 48 89 4c 24 08 48 89 44 24 10 e8 2c a2 fa ff 48 8b 44 24 18 <48> 89 44 24 40 48 8b 6c 24 20 48 83 c4 28 c3 e8 f3 47 00 00 eb 91 RSP: 002b:00007f134b201188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 000000000056c200 RCX: 0000000000466019 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00000000004bd067 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c200 R13: 00007ffc7ffcea4f R14: 00007f134b201300 R15: 0000000000022000 INFO: task syz-executor.4:9779 blocked for more than 140 seconds. Not tainted 4.19.176-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29896 9779 8132 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_nested+0x51/0x90 kernel/locking/rwsem.c:194 inode_lock_nested include/linux/fs.h:783 [inline] filename_create+0x15a/0x490 fs/namei.c:3638 unix_mknod net/unix/af_unix.c:984 [inline] unix_bind+0x321/0xa40 net/unix/af_unix.c:1035 __sys_bind+0x1e9/0x250 net/socket.c:1482 __do_sys_bind net/socket.c:1493 [inline] __se_sys_bind net/socket.c:1491 [inline] __x64_sys_bind+0x6f/0xb0 net/socket.c:1491 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466019 Code: 44 24 08 48 89 44 24 18 48 8b 4c 24 30 48 89 0c 24 48 8b 4c 24 38 48 89 4c 24 08 48 89 44 24 10 e8 2c a2 fa ff 48 8b 44 24 18 <48> 89 44 24 40 48 8b 6c 24 20 48 83 c4 28 c3 e8 f3 47 00 00 eb 91 RSP: 002b:00007f134b1e0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 000000000056c2a8 RCX: 0000000000466019 RDX: 000000000000006e RSI: 0000000020003000 RDI: 0000000000000008 RBP: 00000000004bd067 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c2a8 R13: 00007ffc7ffcea4f R14: 00007f134b1e0300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1565: #0: 00000000d19d7080 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 1 lock held by in:imklog/7804: 2 locks held by syz-executor.4/9719: #0: 000000004cbf258d (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000004cbf258d (sb_writers#16){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#23/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#23/1){+.+.}, at: filename_create+0x15a/0x490 fs/namei.c:3638 2 locks held by syz-executor.4/9733: #0: 000000004cbf258d (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000004cbf258d (sb_writers#16){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#23/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#23/1){+.+.}, at: filename_create+0x15a/0x490 fs/namei.c:3638 1 lock held by syz-executor.4/9769: #0: 00000000e0b50541 (&type->s_umount_key#52){+.+.}, at: deactivate_super+0x16c/0x1a0 fs/super.c:359 1 lock held by syz-executor.4/9773: #0: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#24){.+.+}, at: inode_lock_shared include/linux/fs.h:758 [inline] #0: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#24){.+.+}, at: lookup_slow fs/namei.c:1688 [inline] #0: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#24){.+.+}, at: walk_component+0x798/0xda0 fs/namei.c:1811 2 locks held by syz-executor.4/9779: #0: 000000004cbf258d (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000004cbf258d (sb_writers#16){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#23/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 00000000e2a3fc28 (&sb->s_type->i_mutex_key#23/1){+.+.}, at: filename_create+0x15a/0x490 fs/namei.c:3638 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1565 Comm: khungtaskd Not tainted 4.19.176-syzkaller #0 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+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: 7805 Comm: rs:main Q:Reg Not tainted 4.19.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count_sub+0x21/0x150 kernel/sched/core.c:3262 Code: 1f 84 00 00 00 00 00 66 90 48 c7 c0 60 b7 23 8d 53 89 fb 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 <0f> b6 14 11 38 d0 7c 08 84 d2 0f 85 ef 00 00 00 8b 0d 89 47 e2 0b RSP: 0018:ffff8880a11bf248 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 1ffffffff1a476ec RDX: dffffc0000000000 RSI: ffff8880a11bf1e8 RDI: 0000000000000001 RBP: ffff8880a11bf3e8 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000074071 R11: 0000000000000001 R12: ffff8880a11b8000 R13: ffff8880a11bf42d R14: ffff8880a11bf430 R15: ffff8880a11bf3f8 FS: 00007fc1773f6700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f215db29000 CR3: 0000000092e0f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x10a9/0x1c60 arch/x86/kernel/unwind_orc.c:579 __unwind_start+0x5b8/0x960 arch/x86/kernel/unwind_orc.c:667 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x72/0x190 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc+0x122/0x370 mm/slab.c:3559 kmem_cache_zalloc include/linux/slab.h:699 [inline] alloc_buffer_head+0x20/0x130 fs/buffer.c:3372 alloc_page_buffers+0x169/0x5c0 fs/buffer.c:830 create_empty_buffers+0x2c/0x760 fs/buffer.c:1528 create_page_buffers+0x212/0x350 fs/buffer.c:1645 __block_write_begin_int+0x22b/0x17b0 fs/buffer.c:1957 ext4_da_write_begin+0x4e1/0x10e0 fs/ext4/inode.c:3110 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 ext4_file_write_iter+0x2fe/0xf20 fs/ext4/file.c:272 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc179e3a1cd Code: c2 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae fc ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 f7 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fc1773f5590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fc16c0264a0 RCX: 00007fc179e3a1cd RDX: 0000000000000403 RSI: 00007fc16c0264a0 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fc16c026220 R13: 00007fc1773f55b0 R14: 000055675ab15440 R15: 0000000000000403