FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 5105 Comm: syz-executor.6 Not tainted 6.0.0-rc1-next-20220819 #1 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 5105, name: syz-executor.6 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by syz-executor.6/5105: #0: ffff888046c40ae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x100 irq event stamp: 1052 hardirqs last enabled at (1051): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1052): [] dump_stack_lvl+0x2e/0xb3 softirqs last enabled at (1046): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (1015): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 5105 Comm: syz-executor.6 Not tainted 6.0.0-rc1-next-20220819 #1 syz-executor.6[5105] cmdline: /syz-executor.6 exec Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 __might_resched.cold+0x222/0x26b down_read_killable+0x75/0x490 __access_remote_vm+0xac/0x6f0 get_mm_cmdline.part.0+0x214/0x600 get_task_cmdline_kernel+0x1e9/0x230 dump_stack_print_cmdline.part.0+0x82/0x150 dump_stack_print_info+0x185/0x190 dump_stack_lvl+0x7f/0xb3 should_fail.cold+0x5/0xa _copy_to_user+0x2a/0x140 simple_read_from_buffer+0xcc/0x160 proc_fail_nth_read+0x198/0x230 vfs_read+0x253/0x930 ksys_read+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f3bb953b69c Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48 RSP: 002b:00007f3bb6afe170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3bb953b69c RDX: 000000000000000f RSI: 00007f3bb6afe1e0 RDI: 0000000000000005 RBP: 00007f3bb6afe1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff48b0486f R14: 00007f3bb6afe300 R15: 0000000000022000 syz-executor.6[5105] cmdline: /syz-executor.6 exec Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 should_fail.cold+0x5/0xa _copy_to_user+0x2a/0x140 simple_read_from_buffer+0xcc/0x160 proc_fail_nth_read+0x198/0x230 vfs_read+0x253/0x930 ksys_read+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f3bb953b69c Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48 RSP: 002b:00007f3bb6afe170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3bb953b69c RDX: 000000000000000f RSI: 00007f3bb6afe1e0 RDI: 0000000000000005 RBP: 00007f3bb6afe1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff48b0486f R14: 00007f3bb6afe300 R15: 0000000000022000 debugfs: Directory '201' with parent 'hci6' already present! sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:201' CPU: 0 PID: 325 Comm: kworker/u5:6 Tainted: G W 6.0.0-rc1-next-20220819 #1 kworker/u5:6[325] cmdline: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: hci6 hci_rx_work Call Trace: dump_stack_lvl+0x8b/0xb3 sysfs_warn_dup.cold+0x1c/0x29 sysfs_create_dir_ns+0x237/0x290 kobject_add_internal+0x24c/0x8e0 kobject_add+0x150/0x1c0 device_add+0x35e/0x1ec0 hci_conn_add_sysfs+0x91/0x110 le_conn_complete_evt+0x117f/0x17d0 hci_le_conn_complete_evt+0x226/0x2c0 hci_le_meta_evt+0x2c0/0x4a0 hci_event_packet+0x636/0xf60 hci_rx_work+0xa82/0x1000 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 kobject_add_internal failed for hci6:201 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci6: failed to register connection device debugfs: Directory '201' with parent 'hci4' already present! sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:201' CPU: 0 PID: 325 Comm: kworker/u5:6 Tainted: G W 6.0.0-rc1-next-20220819 #1 kworker/u5:6[325] cmdline: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: hci4 hci_rx_work Call Trace: dump_stack_lvl+0x8b/0xb3 sysfs_warn_dup.cold+0x1c/0x29 sysfs_create_dir_ns+0x237/0x290 kobject_add_internal+0x24c/0x8e0 kobject_add+0x150/0x1c0 device_add+0x35e/0x1ec0 hci_conn_add_sysfs+0x91/0x110 le_conn_complete_evt+0x117f/0x17d0 hci_le_conn_complete_evt+0x226/0x2c0 hci_le_meta_evt+0x2c0/0x4a0 hci_event_packet+0x636/0xf60 hci_rx_work+0xa82/0x1000 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 kobject_add_internal failed for hci4:201 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci4: failed to register connection device debugfs: Directory '0' with parent 'hci1' already present! sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0' CPU: 0 PID: 325 Comm: kworker/u5:6 Tainted: G W 6.0.0-rc1-next-20220819 #1 kworker/u5:6[325] cmdline: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: hci1 hci_rx_work Call Trace: dump_stack_lvl+0x8b/0xb3 sysfs_warn_dup.cold+0x1c/0x29 sysfs_create_dir_ns+0x237/0x290 kobject_add_internal+0x24c/0x8e0 kobject_add+0x150/0x1c0 device_add+0x35e/0x1ec0 hci_conn_add_sysfs+0x91/0x110 le_conn_complete_evt+0x117f/0x17d0 hci_le_conn_complete_evt+0x226/0x2c0 hci_le_meta_evt+0x2c0/0x4a0 hci_event_packet+0x636/0xf60 hci_rx_work+0xa82/0x1000 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci1: failed to register connection device Bluetooth: hci0: HCI_REQ-0x0406 debugfs: Directory '201' with parent 'hci6' already present! sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:201' CPU: 1 PID: 317 Comm: kworker/u5:3 Tainted: G W 6.0.0-rc1-next-20220819 #1 kworker/u5:3[317] cmdline: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: hci6 hci_rx_work Call Trace: dump_stack_lvl+0x8b/0xb3 sysfs_warn_dup.cold+0x1c/0x29 sysfs_create_dir_ns+0x237/0x290 kobject_add_internal+0x24c/0x8e0 kobject_add+0x150/0x1c0 device_add+0x35e/0x1ec0 hci_conn_add_sysfs+0x91/0x110 le_conn_complete_evt+0x117f/0x17d0 hci_le_conn_complete_evt+0x226/0x2c0 hci_le_meta_evt+0x2c0/0x4a0 hci_event_packet+0x636/0xf60 hci_rx_work+0xa82/0x1000 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 kobject_add_internal failed for hci6:201 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci6: failed to register connection device Bluetooth: hci0: command 0x2016 tx timeout Bluetooth: hci1: command 0x2016 tx timeout Bluetooth: hci6: command 0x2016 tx timeout Bluetooth: hci1: command 0x2016 tx timeout Bluetooth: hci0: command 0x2016 tx timeout Bluetooth: hci6: command 0x2016 tx timeout Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci1: command 0x2016 tx timeout