syz-executor.0: vmalloc error: size 2097152, vm_struct allocation failed, mode:0xcc2(GFP_KERNEL|__GFP_HIGHMEM), nodemask=(null),cpuset=syz0,mems_allowed=0-1 CPU: 0 PID: 11238 Comm: syz-executor.0 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 11238, name: syz-executor.0 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz-executor.0/11238: #0: ffff8880781fd4d8 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1412 [inline] #0: ffff8880781fd4d8 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_write+0x1c2/0x990 sound/core/oss/pcm_oss.c:2811 #1: ffff8880781fd230 (&runtime->buffer_mutex){+.+.}-{3:3}, at: snd_pcm_buffer_access_lock+0x9e/0xd0 sound/core/pcm_native.c:695 irq event stamp: 420 hardirqs last enabled at (419): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1352 [inline] hardirqs last enabled at (419): [] finish_lock_switch kernel/sched/core.c:4956 [inline] hardirqs last enabled at (419): [] finish_task_switch.isra.0+0x2b5/0xc70 kernel/sched/core.c:5074 hardirqs last disabled at (420): [] dump_stack_lvl+0x2e/0x134 lib/dump_stack.c:139 softirqs last enabled at (412): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (412): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (353): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (353): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 CPU: 0 PID: 11238 Comm: syz-executor.0 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 syz-executor.0[11238] cmdline: /root/syz-executor.0 exec Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:122 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:140 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9896 down_read_killable+0x75/0x490 kernel/locking/rwsem.c:1521 mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] __access_remote_vm+0xac/0x6f0 mm/memory.c:5461 get_mm_cmdline.part.0+0x217/0x620 fs/proc/base.c:299 get_mm_cmdline fs/proc/base.c:367 [inline] get_task_cmdline_kernel+0x1d9/0x220 fs/proc/base.c:367 dump_stack_print_cmdline.part.0+0x82/0x150 lib/dump_stack.c:61 dump_stack_print_cmdline lib/dump_stack.c:89 [inline] dump_stack_print_info+0x185/0x190 lib/dump_stack.c:97 __dump_stack lib/dump_stack.c:121 [inline] dump_stack_lvl+0xc1/0x134 lib/dump_stack.c:140 warn_alloc.cold+0x9b/0x189 mm/page_alloc.c:4356 __vmalloc_node_range+0xdf5/0x13a0 mm/vmalloc.c:3161 __vmalloc_node mm/vmalloc.c:3261 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3275 __snd_dma_alloc_pages+0xcf/0x150 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+0x3d8/0x980 sound/core/pcm_memory.c:431 snd_pcm_hw_params+0x14d0/0x19f0 sound/core/pcm_native.c:759 snd_pcm_kernel_ioctl+0x164/0x310 sound/core/pcm_native.c:3437 snd_pcm_oss_change_params_locked+0x14dd/0x3a60 sound/core/oss/pcm_oss.c:976 snd_pcm_oss_make_ready_locked+0xb3/0x130 sound/core/oss/pcm_oss.c:1198 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1416 [inline] snd_pcm_oss_write+0x1e2/0x990 sound/core/oss/pcm_oss.c:2811 vfs_write+0x2d7/0xdd0 fs/read_write.c:576 ksys_write+0x127/0x250 fs/read_write.c:631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff7f0e89279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff7f1f3b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff7f0f9bf80 RCX: 00007ff7f0e89279 RDX: 00000000000000d0 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ff7f1f3b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffce1dc291f R14: 00007ff7f1f3b300 R15: 0000000000022000 syz-executor.0[11238] cmdline: /root/syz-executor.0 exec Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:122 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:140 warn_alloc.cold+0x9b/0x189 mm/page_alloc.c:4356 __vmalloc_node_range+0xdf5/0x13a0 mm/vmalloc.c:3161 __vmalloc_node mm/vmalloc.c:3261 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3275 __snd_dma_alloc_pages+0xcf/0x150 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+0x3d8/0x980 sound/core/pcm_memory.c:431 snd_pcm_hw_params+0x14d0/0x19f0 sound/core/pcm_native.c:759 snd_pcm_kernel_ioctl+0x164/0x310 sound/core/pcm_native.c:3437 snd_pcm_oss_change_params_locked+0x14dd/0x3a60 sound/core/oss/pcm_oss.c:976 snd_pcm_oss_make_ready_locked+0xb3/0x130 sound/core/oss/pcm_oss.c:1198 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1416 [inline] snd_pcm_oss_write+0x1e2/0x990 sound/core/oss/pcm_oss.c:2811 vfs_write+0x2d7/0xdd0 fs/read_write.c:576 ksys_write+0x127/0x250 fs/read_write.c:631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff7f0e89279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff7f1f3b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff7f0f9bf80 RCX: 00007ff7f0e89279 RDX: 00000000000000d0 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ff7f1f3b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffce1dc291f R14: 00007ff7f1f3b300 R15: 0000000000022000 Mem-Info: active_anon:532 inactive_anon:150410 isolated_anon:0 active_file:10936 inactive_file:574 isolated_file:0 unevictable:768 dirty:49 writeback:0 slab_reclaimable:19761 slab_unreclaimable:94458 mapped:18352 shmem:10064 pagetables:966 bounce:0 kernel_misc_reclaimable:0 free:1293284 free_pcp:7211 free_cma:0 Node 0 active_anon:2148kB inactive_anon:606112kB active_file:43668kB inactive_file:2296kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:75404kB dirty:192kB writeback:0kB shmem:38724kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 22528kB writeback_tmp:0kB kernel_stack:10432kB pagetables:3888kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:76kB inactive_file:0kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:4kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:4kB all_unreclaimable? no Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2631 2632 2632 2632 Node 0 DMA32 free:1217136kB boost:0kB min:35556kB low:44444kB high:53332kB reserved_highatomic:0KB active_anon:2144kB inactive_anon:605244kB active_file:42800kB inactive_file:2300kB unevictable:1536kB writepending:192kB present:3129332kB managed:2699792kB mlocked:0kB bounce:0kB free_pcp:13744kB local_pcp:10664kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 Normal free:8kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:4kB inactive_anon:32kB active_file:868kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:912kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:3936852kB boost:0kB min:54336kB low:67920kB high:81504kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:76kB inactive_file:0kB unevictable:1536kB writepending:4kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15944kB local_pcp:7528kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB Node 0 DMA32: 474*4kB (UME) 4542*8kB (UME) 2367*16kB (UME) 1291*32kB (UME) 352*64kB (UME) 127*128kB (UME) 59*256kB (UME) 29*512kB (UM) 19*1024kB (UM) 10*2048kB (UME) 241*4096kB (UM) = 1213224kB Node 0 Normal: 0*4kB 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB Node 1 Normal: 155*4kB (UE) 33*8kB (UE) 32*16kB (UME) 39*32kB (UME) 28*64kB (UME) 12*128kB (UE) 1*256kB (U) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 958*4096kB (M) = 3936852kB 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 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB 21579 total pagecache pages 0 pages in swap cache Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 388630 pages reserved 0 pages cma reserved