snd_pcm_lib_malloc_pages+0x33a/0x790 sound/core/pcm_memory.c:455 snd_pcm_hw_params+0x816/0x1d60 sound/core/pcm_native.c:801 snd_pcm_oss_change_params_locked+0x201f/0x3e00 sound/core/oss/pcm_oss.c:965 snd_pcm_oss_make_ready_locked sound/core/oss/pcm_oss.c:1188 [inline] snd_pcm_oss_sync+0x570/0xfc0 sound/core/oss/pcm_oss.c:1669 snd_pcm_oss_release+0xff/0x250 sound/core/oss/pcm_oss.c:2575 __fput+0x44f/0xa70 fs/file_table.c:468 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x69b/0x2310 kernel/exit.c:971 do_group_exit+0x21b/0x2d0 kernel/exit.c:1112 get_signal+0x1284/0x1330 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f768ad9aeb9 Code: Unable to access opcode bytes at 0x7f768ad9ae8f. RSP: 002b:00007f76871f5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 RAX: 0000200000000000 RBX: 00007f768b015fa0 RCX: 00007f768ad9aeb9 RDX: 0000000000400000 RSI: 0000000000001000 RDI: 0000200000a96000 RBP: 00007f768ae08c1f R08: 0000200000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f768b016038 R14: 00007f768b015fa0 R15: 00007fffc0763f38 Mem-Info: active_anon:1729 inactive_anon:0 isolated_anon:0 active_file:830 inactive_file:38919 isolated_file:0 unevictable:1768 dirty:0 writeback:0 slab_reclaimable:7353 slab_unreclaimable:29827 mapped:1059 shmem:2245 pagetables:308 sec_pagetables:289 bounce:0 kernel_misc_reclaimable:0 free:44063 free_pcp:999 free_cma:0 Node 0 active_anon:4kB inactive_anon:0kB active_file:12kB inactive_file:4kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:8kB dirty:0kB writeback:0kB shmem:1536kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB kernel_stack:3168kB pagetables:448kB sec_pagetables:1084kB all_unreclaimable? yes Balloon:0kB Node 0 DMA free:1212kB boost:0kB min:760kB low:948kB high:1136kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB zspages:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:188kB local_pcp:188kB free_cma:0kB lowmem_reserve[]: 0 115 115 115 115 Node 0 DMA32 free:4512kB boost:0kB min:4524kB low:5652kB high:6780kB reserved_highatomic:0KB free_highatomic:0KB active_anon:4kB inactive_anon:0kB active_file:12kB inactive_file:4kB unevictable:1536kB writepending:0kB zspages:0kB present:770052kB managed:118340kB mlocked:0kB bounce:0kB free_pcp:3812kB local_pcp:3812kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 3*4kB (U) 6*8kB (U) 2*16kB (U) 5*32kB (U) 1*64kB (U) 1*128kB (U) 1*256kB (U) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 1212kB Node 0 DMA32: 10*4kB (UME) 3*8kB (M) 4*16kB (UM) 3*32kB (M) 7*64kB (UM) 8*128kB (UM) 3*256kB (UM) 2*512kB (UM) 1*1024kB (M) 0*2048kB 0*4096kB = 4512kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB 42006 total pagecache pages 13 pages in swap cache Free swap = 124740kB Total swap = 124996kB 393083 pages RAM 0 pages HighMem/MovableOnly 186955 pages reserved 0 pages cma reserved Out of memory and no killable processes... Kernel panic - not syncing: System is deadlocked on memory CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: vpanic+0x1e0/0x670 kernel/panic.c:490 panic+0xc5/0xd0 kernel/panic.c:627 out_of_memory+0x1378/0x1410 mm/oom_kill.c:1182 __alloc_pages_may_oom+0x1ea/0x330 mm/page_alloc.c:4122 __alloc_pages_slowpath+0x726/0xd40 mm/page_alloc.c:4927 __alloc_frozen_pages_noprof+0x322/0x380 mm/page_alloc.c:5253 __alloc_pages_noprof mm/page_alloc.c:5274 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5194 alloc_pages_bulk_mempolicy_noprof+0x34e/0x1680 mm/mempolicy.c:2794 vm_area_alloc_pages mm/vmalloc.c:3693 [inline] __vmalloc_area_node mm/vmalloc.c:3863 [inline] __vmalloc_node_range_noprof+0xa32/0x1730 mm/vmalloc.c:4051 __vmalloc_node_noprof mm/vmalloc.c:4111 [inline] vmalloc_noprof+0xb2/0xe0 mm/vmalloc.c:4146 __snd_dma_alloc_pages sound/core/memalloc.c:45 [inline] snd_dma_alloc_dir_pages+0x120/0x220 sound/core/memalloc.c:79 do_alloc_pages+0x175/0x2c0 sound/core/pcm_memory.c:69 snd_pcm_lib_malloc_pages+0x33a/0x790 sound/core/pcm_memory.c:455 snd_pcm_hw_params+0x816/0x1d60 sound/core/pcm_native.c:801 snd_pcm_oss_change_params_locked+0x201f/0x3e00 sound/core/oss/pcm_oss.c:965 snd_pcm_oss_make_ready_locked sound/core/oss/pcm_oss.c:1188 [inline] snd_pcm_oss_sync+0x570/0xfc0 sound/core/oss/pcm_oss.c:1669 snd_pcm_oss_release+0xff/0x250 sound/core/oss/pcm_oss.c:2575 __fput+0x44f/0xa70 fs/file_table.c:468 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x69b/0x2310 kernel/exit.c:971 do_group_exit+0x21b/0x2d0 kernel/exit.c:1112 get_signal+0x1284/0x1330 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f768ad9aeb9 Code: Unable to access opcode bytes at 0x7f768ad9ae8f. RSP: 002b:00007f76871f5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 RAX: 0000200000000000 RBX: 00007f768b015fa0 RCX: 00007f768ad9aeb9 RDX: 0000000000400000 RSI: 0000000000001000 RDI: 0000200000a96000 RBP: 00007f768ae08c1f R08: 0000200000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f768b016038 R14: 00007f768b015fa0 R15: 00007fffc0763f38 Kernel Offset: disabled Rebooting in 86400 seconds.. loop0: detected capacity change from 0 to 4096