wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) INFO: task syz-executor.5:15646 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.5 D28600 15646 8134 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 tty_set_termios+0xec/0x830 drivers/tty/tty_ioctl.c:328 set_termios.part.0+0x2b1/0x4c0 drivers/tty/tty_ioctl.c:414 set_termios drivers/tty/tty_ioctl.c:368 [inline] tty_mode_ioctl+0x34c/0xb60 drivers/tty/tty_ioctl.c:772 n_tty_ioctl_helper+0x55/0x3a0 drivers/tty/tty_ioctl.c:940 n_tty_ioctl+0x56/0x360 drivers/tty/n_tty.c:2464 tty_ioctl+0x65d/0x1630 drivers/tty/tty_io.c:2678 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7eff04778109 Code: Bad RIP value. RSP: 002b:00007eff030ed168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007eff0488af60 RCX: 00007eff04778109 RDX: 00000000200003c0 RSI: 00000000402c542b RDI: 0000000000000004 RBP: 00007eff047d20ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8a49ea6f R14: 00007eff030ed300 R15: 0000000000022000 INFO: task syz-executor.5:15647 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.5 D29240 15647 8134 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 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372 tioclinux+0x122/0x510 drivers/tty/vt/vt.c:3072 vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372 tty_ioctl+0x5b0/0x1630 drivers/tty/tty_io.c:2669 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7eff04778109 Code: Bad RIP value. RSP: 002b:00007eff030cc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007eff0488b030 RCX: 00007eff04778109 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00007eff047d20ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8a49ea6f R14: 00007eff030cc300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1571: #0: 000000001fd5fed7 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7810: #0: 00000000d0f5c3f7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 8 locks held by syz-executor.3/15572: 2 locks held by syz-executor.5/15646: #0: 00000000e25b4d6e (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000759c1544 (&tty->termios_rwsem){++++}, at: tty_set_termios+0xec/0x830 drivers/tty/tty_ioctl.c:328 2 locks held by syz-executor.5/15647: #0: 00000000e25b4d6e (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000037dc66cd (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 15572 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0x30/0x210 kernel/locking/lockdep.c:3939 Code: 00 fc ff df 41 54 55 48 89 fd 53 65 48 8b 1c 25 c0 df 01 00 48 8d bb 84 08 00 00 48 83 ec 08 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 5e 01 00 00 8b RSP: 0018:ffff8880ba107f88 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: ffff888055d461c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff888055d46a44 RBP: ffffffff89f85f20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f4c58c85700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4eb9e14010 CR3: 00000000b4fcc000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:344 [inline] rcu_read_lock_sched_held+0x16c/0x1d0 kernel/rcu/update.c:118 trace_local_timer_exit arch/x86/include/asm/trace/irq_vectors.h:56 [inline] smp_apic_timer_interrupt+0x3ca/0x550 arch/x86/kernel/apic/apic.c:1097 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:slow_down_io arch/x86/include/asm/paravirt.h:268 [inline] RIP: 0010:outb_p arch/x86/include/asm/io.h:333 [inline] RIP: 0010:vga_io_w include/video/vga.h:209 [inline] RIP: 0010:setop drivers/video/fbdev/vga16fb.c:150 [inline] RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1162 [inline] RIP: 0010:vga16fb_imageblit+0x855/0x2260 drivers/video/fbdev/vga16fb.c:1260 Code: 10 82 f1 89 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 47 19 00 00 ff 15 73 07 53 06 31 c0 ba cf 03 00 00 ee <48> c7 c2 10 82 f1 89 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 RSP: 0018:ffff8880543bf188 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffffffff8128f470 RCX: ffffffff839e79cc RDX: 00000000000003cf RSI: ffffffff839e79da RDI: 0000000000000005 RBP: ffff8880b06a8e84 R08: ffff8880b0759f1f R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b0799b08 R13: ffff8880b0759f10 R14: ffff8880b06a8ea0 R15: 0000000000000001 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0x1126/0x1740 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x531/0x710 drivers/video/fbdev/core/fbcon.c:1312 hide_cursor+0x85/0x2c0 drivers/tty/vt/vt.c:902 do_con_write+0x13d3/0x1d90 drivers/tty/vt/vt.c:2622 con_put_char+0x96/0xe0 drivers/tty/vt/vt.c:3173 tty_put_char+0xb7/0x150 drivers/tty/tty_io.c:2892 do_output_char+0x155/0x850 drivers/tty/n_tty.c:486 __process_echoes+0x38e/0x9f0 drivers/tty/n_tty.c:737 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xc0c/0x2a90 drivers/tty/n_tty.c:1740 tty_ldisc_receive_buf+0xa9/0x190 drivers/tty/tty_buffer.c:456 paste_selection+0x1e5/0x470 drivers/tty/vt/selection.c:390 tioclinux+0x122/0x510 drivers/tty/vt/vt.c:3072 vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372 tty_ioctl+0x5b0/0x1630 drivers/tty/tty_io.c:2669 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4c5a310109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4c58c85168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4c5a422f60 RCX: 00007f4c5a310109 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00007f4c5a36a0ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcddc85eaf R14: 00007f4c58c85300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: df 41 54 filds 0x54(%rcx) 3: 55 push %rbp 4: 48 89 fd mov %rdi,%rbp 7: 53 push %rbx 8: 65 48 8b 1c 25 c0 df mov %gs:0x1dfc0,%rbx f: 01 00 11: 48 8d bb 84 08 00 00 lea 0x884(%rbx),%rdi 18: 48 83 ec 08 sub $0x8,%rsp 1c: 48 89 fa mov %rdi,%rdx 1f: 48 c1 ea 03 shr $0x3,%rdx 23: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 27: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2a: 83 e0 07 and $0x7,%eax 2d: 83 c0 03 add $0x3,%eax 30: 38 d0 cmp %dl,%al 32: 7c 08 jl 0x3c 34: 84 d2 test %dl,%dl 36: 0f 85 5e 01 00 00 jne 0x19a 3c: 8b .byte 0x8b