INFO: task syz-executor.3:24865 can't die for more than 143 seconds. task:syz-executor.3 state:R running task stack:26544 pid:24865 ppid: 15151 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4984 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6265 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6431 __cond_resched+0x13/0x20 kernel/sched/core.c:8144 _cond_resched include/linux/sched.h:2025 [inline] vunmap_pmd_range mm/vmalloc.c:359 [inline] vunmap_pud_range mm/vmalloc.c:382 [inline] vunmap_p4d_range mm/vmalloc.c:405 [inline] vunmap_range_noflush+0x4ec/0x6d0 mm/vmalloc.c:436 free_unmap_vmap_area mm/vmalloc.c:1778 [inline] remove_vm_area+0x1c2/0x230 mm/vmalloc.c:2528 vm_remove_mappings mm/vmalloc.c:2557 [inline] __vunmap+0x392/0xb70 mm/vmalloc.c:2622 __vfree+0x3c/0xd0 mm/vmalloc.c:2680 __vmalloc_area_node mm/vmalloc.c:2981 [inline] __vmalloc_node_range+0x8b5/0xab0 mm/vmalloc.c:3065 __vmalloc_node mm/vmalloc.c:3114 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3128 __snd_dma_alloc_pages+0xc1/0x130 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+0x1936/0x3a60 sound/core/oss/pcm_oss.c:947 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1091 [inline] snd_pcm_oss_make_ready+0xe7/0x1b0 sound/core/oss/pcm_oss.c:1150 snd_pcm_oss_sync+0x1de/0x800 sound/core/oss/pcm_oss.c:1717 snd_pcm_oss_release+0x276/0x300 sound/core/oss/pcm_oss.c:2571 __fput+0x286/0x9f0 fs/file_table.c:280 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: 0033:0x7f4b980d272b RSP: 002b:00007ffdc06cab70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f4b980d272b RDX: 00007f4b98238088 RSI: ffffffff89177791 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2e628914 R10: 0000000000000916 R11: 0000000000000293 R12: 00000000003127d3 R13: 00000000000003e8 R14: 00007f4b98232f60 R15: 00000000003120b8 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b7839a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 2 locks held by in:imklog/6174: #0: ffff88801d84cd70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 #1: ffff8880b9d39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478 1 lock held by syz-executor.3/24865: =============================================