INFO: task syz-executor.1:8781 can't die for more than 143 seconds. task:syz-executor.1 state:R running task stack:26536 pid: 8781 ppid: 535 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4983 [inline] __schedule+0xab2/0x4d90 kernel/sched/core.c:6293 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6459 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 vprintk_emit+0x1c9/0x4f0 kernel/printk/printk.c:2250 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50 _printk+0xba/0xed kernel/printk/printk.c:2270 show_free_areas+0x769/0x1120 mm/page_alloc.c:5899 show_mem+0x31/0x191 lib/show_mem.c:17 warn_alloc_show_mem mm/page_alloc.c:4213 [inline] warn_alloc.cold+0x10e/0x17a mm/page_alloc.c:4236 __vmalloc_area_node mm/vmalloc.c:2969 [inline] __vmalloc_node_range+0xc44/0xe50 mm/vmalloc.c:3097 __vmalloc_node mm/vmalloc.c:3147 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3161 __snd_dma_alloc_pages+0x50/0x90 sound/core/memalloc.c:39 snd_dma_alloc_dir_pages+0x14d/0x240 sound/core/memalloc.c:73 do_alloc_pages+0xc2/0x180 sound/core/pcm_memory.c:48 snd_pcm_lib_malloc_pages+0x3e2/0x990 sound/core/pcm_memory.c:424 snd_pcm_hw_params+0x1408/0x1990 sound/core/pcm_native.c:719 snd_pcm_kernel_ioctl+0x164/0x310 sound/core/pcm_native.c:3372 snd_pcm_oss_change_params_locked+0x13c8/0x3bf0 sound/core/oss/pcm_oss.c:960 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1104 [inline] snd_pcm_oss_make_ready+0xe7/0x1b0 sound/core/oss/pcm_oss.c:1163 snd_pcm_oss_sync+0x1de/0x800 sound/core/oss/pcm_oss.c:1730 snd_pcm_oss_release+0x276/0x300 sound/core/oss/pcm_oss.c:2584 __fput+0x286/0x9f0 fs/file_table.c:311 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2a3e5ff72b RSP: 002b:00007fff3715efb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 00007f2a3e5ff72b RDX: 00007f2a3e7653d0 RSI: ffffffff8952abe1 RDI: 0000000000000004 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000183d R11: 0000000000000293 R12: 00007f2a3e75ff60 R13: 00000000002333fa R14: 0000000000000000 R15: 0000000000232d10 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb828e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 1 lock held by in:imklog/6225: #0: ffff88807aeb05f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:994 2 locks held by agetty/6236: #0: ffff88801a4cc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900030832e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077 1 lock held by syz-executor.1/8781: =============================================