CPU: 1 PID: 12167 Comm: syz-executor.5 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: 12167, name: syz-executor.5 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz-executor.5/12167: #0: ffff88802556f4d8 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1113 [inline] #0: ffff88802556f4d8 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_make_ready+0xc7/0x1b0 sound/core/oss/pcm_oss.c:1175 #1: ffff88802556f230 (&runtime->buffer_mutex){+.+.}-{3:3}, at: snd_pcm_buffer_access_lock+0x9e/0xd0 sound/core/pcm_native.c:695 irq event stamp: 788 hardirqs last enabled at (787): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1352 [inline] hardirqs last enabled at (787): [] finish_lock_switch kernel/sched/core.c:4956 [inline] hardirqs last enabled at (787): [] finish_task_switch.isra.0+0x2b5/0xc70 kernel/sched/core.c:5074 hardirqs last disabled at (788): [] dump_stack_lvl+0x2e/0x134 lib/dump_stack.c:139 softirqs last enabled at (780): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (780): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (757): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (757): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 CPU: 1 PID: 12167 Comm: syz-executor.5 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 syz-executor.5[12167] cmdline: /root/syz-executor.5 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_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_make_ready+0xe7/0x1b0 sound/core/oss/pcm_oss.c:1175 snd_pcm_oss_get_ptr sound/core/oss/pcm_oss.c:2208 [inline] snd_pcm_oss_ioctl+0x23c/0x3420 sound/core/oss/pcm_oss.c:2729 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 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: 0033:0x7f651e089279 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:00007f651f14e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f651e19bf80 RCX: 00007f651e089279 RDX: ffffffffff600000 RSI: 00000000800c5011 RDI: 0000000000000003 RBP: 00007f651f14e1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffdf37625af R14: 00007f651f14e300 R15: 0000000000022000 syz-executor.5[12167] cmdline: /root/syz-executor.5 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_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_make_ready+0xe7/0x1b0 sound/core/oss/pcm_oss.c:1175 snd_pcm_oss_get_ptr sound/core/oss/pcm_oss.c:2208 [inline] snd_pcm_oss_ioctl+0x23c/0x3420 sound/core/oss/pcm_oss.c:2729 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 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: 0033:0x7f651e089279 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:00007f651f14e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f651e19bf80 RCX: 00007f651e089279 RDX: ffffffffff600000 RSI: 00000000800c5011 RDI: 0000000000000003 RBP: 00007f651f14e1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffdf37625af R14: 00007f651f14e300 R15: 0000000000022000 Mem-Info: active_anon:621 inactive_anon:261551 isolated_anon:0 active_file:11219 inactive_file:507 isolated_file:0 unevictable:768 dirty:53 writeback:0 slab_reclaimable:20166 slab_unreclaimable:103813 mapped:18312 shmem:1738 pagetables:1061 bounce:0 kernel_misc_reclaimable:0 free:1165842 free_pcp:9521 free_cma:0 Node 0 active_anon:2484kB inactive_anon:1046204kB active_file:44804kB inactive_file:2028kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:73248kB dirty:204kB writeback:0kB shmem:5416kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 49152kB writeback_tmp:0kB kernel_stack:10312kB pagetables:4140kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:72kB inactive_file:0kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:8kB 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:707828kB boost:0kB min:35556kB low:44444kB high:53332kB reserved_highatomic:0KB active_anon:2480kB inactive_anon:1046172kB active_file:43928kB inactive_file:2028kB unevictable:1536kB writepending:204kB present:3129332kB managed:2699792kB mlocked:0kB bounce:0kB free_pcp:25256kB local_pcp:13724kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 Normal free:0kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:4kB inactive_anon:32kB active_file:876kB 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:3940180kB boost:0kB min:54336kB low:67920kB high:81504kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:72kB inactive_file:0kB unevictable:1536kB writepending:8kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:13952kB local_pcp:7808kB 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: 39*4kB (UE) 71*8kB (UME) 1254*16kB (UME) 264*32kB (UME) 348*64kB (UME) 86*128kB (UME) 41*256kB (UME) 12*512kB (UME) 4*1024kB (UME) 5*2048kB (UM) 150*4096kB (UM) = 707892kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB Node 1 Normal: 159*4kB (UE) 53*8kB (UE) 35*16kB (UME) 54*32kB (UME) 33*64kB (UME) 16*128kB (UE) 6*256kB (UE) 0*512kB 1*1024kB (M) 1*2048kB (U) 959*4096kB (M) = 3940180kB 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 13472 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