wlan0: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) wlan0: 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 INFO: task syz-executor.2:7229 blocked for more than 140 seconds. Not tainted 4.19.201-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28648 7229 8140 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:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 blkdev_put+0x30/0x520 fs/block_dev.c:1839 blkdev_close+0x86/0xb0 fs/block_dev.c:1888 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4193fb Code: Bad RIP value. RSP: 002b:00007ffdbbe9e5d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004193fb RDX: 0000001b307270c4 RSI: 0000001b30725a1c RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000001466 R10: 00000000f383b46a R11: 0000000000000293 R12: 000000000056cb00 R13: 000000000056cb00 R14: 000000000056bf80 R15: 000000000009f971 INFO: task systemd-udevd:7250 blocked for more than 140 seconds. Not tainted 4.19.201-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26624 7250 4697 0x00000100 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 io_schedule+0xb5/0x120 kernel/sched/core.c:5181 wait_on_page_bit_common mm/filemap.c:1123 [inline] wait_on_page_bit+0x2c5/0x3f0 mm/filemap.c:1156 wait_on_page_locked include/linux/pagemap.h:531 [inline] wait_on_page_read mm/filemap.c:2795 [inline] do_read_cache_page+0x8ed/0x1170 mm/filemap.c:2834 read_mapping_page include/linux/pagemap.h:402 [inline] read_dev_sector+0xbf/0x500 block/partition-generic.c:671 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x114/0xe70 block/partitions/acorn.c:366 check_partition+0x390/0x690 block/partitions/check.c:167 rescan_partitions+0x1b5/0x970 block/partition-generic.c:535 bdev_disk_changed+0x179/0x1b0 fs/block_dev.c:1435 __blkdev_get+0x1282/0x1480 fs/block_dev.c:1561 blkdev_get+0xb0/0x940 fs/block_dev.c:1627 blkdev_open+0x202/0x290 fs/block_dev.c:1788 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: 0033:0x7ffa7cadc840 Code: Bad RIP value. RSP: 002b:00007ffc4b80b2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000559b1638dd40 RCX: 00007ffa7cadc840 RDX: 0000559b143a6fe3 RSI: 00000000000a0800 RDI: 0000559b1638ee30 RBP: 00007ffc4b80b460 R08: 0000559b143a6670 R09: 0000000000000010 R10: 0000559b143a6d0c R11: 0000000000000246 R12: 00007ffc4b80b3b0 R13: 0000559b1638b880 R14: 0000000000000003 R15: 000000000000000e Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 00000000b1ed3bf8 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 2 locks held by agetty/28642: #0: 0000000092ab8385 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000081477231 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 1 lock held by syz-executor.2/7229: #0: 00000000f30472e5 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x30/0x520 fs/block_dev.c:1839 1 lock held by systemd-udevd/7250: #0: 00000000f30472e5 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 fs/block_dev.c:1478 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.201-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: 7823 Comm: rs:main Q:Reg Not tainted 4.19.201-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_latency_start kernel/sched/core.c:3218 [inline] RIP: 0010:preempt_count_add+0xde/0x190 kernel/sched/core.c:3241 Code: 48 8b 2c 25 80 df 01 00 48 8d bd 38 12 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8e 00 00 00 <48> 89 9d 38 12 00 00 5b 5d c3 31 ff 31 db e8 ff 14 0a 00 eb c0 e8 RSP: 0018:ffff8880911272b0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffff81298225 RCX: 0000000000000000 RDX: 1ffff11014979a87 RSI: ffff888091127258 RDI: ffff8880a4bcd438 RBP: ffff8880a4bcc200 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888091127457 R11: 0000000000074071 R12: ffff888091127440 R13: 0000000000000000 R14: ffff8880911273f8 R15: 0000000000000068 FS: 00007fd4d3d56700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f60af9a6020 CR3: 00000000939e6000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x135/0x1400 arch/x86/kernel/unwind_orc.c:407 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 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 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 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:3109 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: 0033:0x7fd4d679a1cd 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:00007fd4d3d55590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fd4c8023fb0 RCX: 00007fd4d679a1cd RDX: 0000000000000403 RSI: 00007fd4c8023fb0 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd4c8023d30 R13: 00007fd4d3d555b0 R14: 000055cd77b50360 R15: 0000000000000403