snd_pcm_lib_malloc_pages+0x303/0x690 sound/core/pcm_memory.c:455 snd_pcm_hw_params+0x7e5/0x1d30 sound/core/pcm_native.c:796 snd_pcm_oss_change_params_locked+0x21cb/0x3e40 sound/core/oss/pcm_oss.c:965 snd_pcm_oss_make_ready_locked sound/core/oss/pcm_oss.c:1186 [inline] snd_pcm_oss_sync+0x353/0xc30 sound/core/oss/pcm_oss.c:1667 snd_pcm_oss_release+0xff/0x250 sound/core/oss/pcm_oss.c:2573 __fput+0x44c/0xa70 fs/file_table.c:468 task_work_run+0x1d4/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:966 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fba9138efc9 Code: Unable to access opcode bytes at 0x7fba9138ef9f. RSP: 002b:00007fba9218d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fba915e5fa8 RCX: 00007fba9138efc9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fba915e5fa8 RBP: 00007fba915e5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fba915e6038 R14: 00007fff71275670 R15: 00007fff71275758 Mem-Info: active_anon:1575 inactive_anon:0 isolated_anon:0 active_file:842 inactive_file:38552 isolated_file:0 unevictable:1768 dirty:0 writeback:0 slab_reclaimable:6281 slab_unreclaimable:30249 mapped:1093 shmem:2185 pagetables:300 sec_pagetables:290 bounce:0 kernel_misc_reclaimable:0 free:43323 free_pcp:575 free_cma:0 Node 0 active_anon:8kB inactive_anon:0kB active_file:0kB inactive_file:16kB unevictable:1052kB isolated(anon):0kB isolated(file):0kB mapped:8kB dirty:0kB writeback:0kB shmem:1052kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB kernel_stack:3056kB pagetables:516kB sec_pagetables:1100kB all_unreclaimable? yes Balloon:0kB Node 0 DMA free:1256kB 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:4kB unevictable:200kB writepending:0kB zspages:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:308kB local_pcp:308kB free_cma:0kB lowmem_reserve[]: 0 125 125 125 125 Node 0 DMA32 free:4880kB boost:0kB min:4980kB low:6224kB high:7468kB reserved_highatomic:0KB free_highatomic:0KB active_anon:8kB inactive_anon:0kB active_file:0kB inactive_file:12kB unevictable:852kB writepending:0kB zspages:0kB present:770052kB managed:128404kB mlocked:0kB bounce:0kB free_pcp:2068kB local_pcp:2068kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 0*4kB 11*8kB (UE) 7*16kB (UE) 13*32kB (UE) 6*64kB (UE) 2*128kB (U) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1256kB Node 0 DMA32: 4*4kB (UME) 4*8kB (ME) 6*16kB (UME) 14*32kB (UME) 9*64kB (ME) 3*128kB (M) 3*256kB (UME) 1*512kB (M) 2*1024kB (UM) 0*2048kB 0*4096kB = 4880kB 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 41660 total pagecache pages 82 pages in swap cache Free swap = 123712kB Total swap = 124996kB 393083 pages RAM 0 pages HighMem/MovableOnly 184439 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: 5318 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~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x99/0x250 lib/dump_stack.c:120 vpanic+0x237/0x6d0 kernel/panic.c:489 panic+0xb9/0xc0 kernel/panic.c:626 out_of_memory+0x1211/0x12a0 mm/oom_kill.c:1181 __alloc_pages_may_oom+0x1f2/0x330 mm/page_alloc.c:4060 __alloc_pages_slowpath+0x713/0xcf0 mm/page_alloc.c:4870 __alloc_frozen_pages_noprof+0x319/0x370 mm/page_alloc.c:5196 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline] alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507 vm_area_alloc_pages mm/vmalloc.c:3647 [inline] __vmalloc_area_node mm/vmalloc.c:3724 [inline] __vmalloc_node_range_noprof+0x96c/0x12d0 mm/vmalloc.c:3897 __vmalloc_node_noprof mm/vmalloc.c:3960 [inline] vmalloc_noprof+0xb2/0xf0 mm/vmalloc.c:3993 __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+0x303/0x690 sound/core/pcm_memory.c:455 snd_pcm_hw_params+0x7e5/0x1d30 sound/core/pcm_native.c:796 snd_pcm_oss_change_params_locked+0x21cb/0x3e40 sound/core/oss/pcm_oss.c:965 snd_pcm_oss_make_ready_locked sound/core/oss/pcm_oss.c:1186 [inline] snd_pcm_oss_sync+0x353/0xc30 sound/core/oss/pcm_oss.c:1667 snd_pcm_oss_release+0xff/0x250 sound/core/oss/pcm_oss.c:2573 __fput+0x44c/0xa70 fs/file_table.c:468 task_work_run+0x1d4/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:966 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fba9138efc9 Code: Unable to access opcode bytes at 0x7fba9138ef9f. RSP: 002b:00007fba9218d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fba915e5fa8 RCX: 00007fba9138efc9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fba915e5fa8 RBP: 00007fba915e5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fba915e6038 R14: 00007fff71275670 R15: 00007fff71275758 Kernel Offset: disabled Rebooting in 86400 seconds.. loop0: detected capacity change from 0 to 4096