====================================================== [ INFO: possible circular locking dependency detected ] 4.4.174+ #4 Not tainted ------------------------------------------------------- syz-executor.3/8738 is trying to acquire lock: (&pipe->mutex/1){+.+.+.}, at: [] __pipe_lock fs/pipe.c:86 [inline] (&pipe->mutex/1){+.+.+.}, at: [] fifo_open+0x15d/0xa00 fs/pipe.c:896 but task is already holding lock: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x55/0x120 fs/exec.c:1225 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: [] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_interruptible_nested+0xd2/0xce0 kernel/locking/mutex.c:650 [] proc_pid_attr_write+0x1a8/0x2a0 fs/proc/base.c:2524 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] __kernel_write+0x112/0x370 fs/read_write.c:513 [] write_pipe_buf+0x15d/0x1f0 fs/splice.c:1074 [] splice_from_pipe_feed fs/splice.c:776 [inline] [] __splice_from_pipe+0x37e/0x7a0 fs/splice.c:901 [] splice_from_pipe+0x108/0x170 fs/splice.c:936 [] default_file_splice_write+0x3c/0x80 fs/splice.c:1086 [] do_splice_from fs/splice.c:1128 [inline] [] do_splice fs/splice.c:1404 [inline] [] SYSC_splice fs/splice.c:1707 [inline] [] SyS_splice+0xd71/0x13a0 fs/splice.c:1690 [] entry_SYSCALL_64_fastpath+0x1e/0x9a [] check_prev_add kernel/locking/lockdep.c:1853 [inline] [] check_prevs_add kernel/locking/lockdep.c:1958 [inline] [] validate_chain kernel/locking/lockdep.c:2144 [inline] [] __lock_acquire+0x37d6/0x4f50 kernel/locking/lockdep.c:3213 [] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621 [] __pipe_lock fs/pipe.c:86 [inline] [] fifo_open+0x15d/0xa00 fs/pipe.c:896 [] do_dentry_open+0x38f/0xbd0 fs/open.c:749 [] vfs_open+0x10b/0x210 fs/open.c:862 [] do_last fs/namei.c:3269 [inline] [] path_openat+0x136f/0x4470 fs/namei.c:3406 [] do_filp_open+0x1a1/0x270 fs/namei.c:3440 [] do_open_execat+0x10c/0x6e0 fs/exec.c:805 [] do_execveat_common.isra.0+0x6f6/0x1e90 fs/exec.c:1577 [] do_execve fs/exec.c:1683 [inline] [] SYSC_execve fs/exec.c:1764 [inline] [] SyS_execve+0x42/0x50 fs/exec.c:1759 [] return_from_execve+0x0/0x23 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sig->cred_guard_mutex); lock(&pipe->mutex/1); lock(&sig->cred_guard_mutex); lock(&pipe->mutex/1); *** DEADLOCK *** 1 lock held by syz-executor.3/8738: #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x55/0x120 fs/exec.c:1225 stack backtrace: CPU: 1 PID: 8738 Comm: syz-executor.3 Not tainted 4.4.174+ #4 0000000000000000 a6a3eed9c2034a86 ffff88009f23f530 ffffffff81aad1a1 ffffffff84057a80 ffff8800b4414740 ffffffff83abd2b0 ffffffff83ab6350 ffffffff83abd2b0 ffff88009f23f580 ffffffff813abcda ffff88009f23f660 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] print_circular_bug.cold+0x2f7/0x44e kernel/locking/lockdep.c:1226 [] check_prev_add kernel/locking/lockdep.c:1853 [inline] [] check_prevs_add kernel/locking/lockdep.c:1958 [inline] [] validate_chain kernel/locking/lockdep.c:2144 [inline] [] __lock_acquire+0x37d6/0x4f50 kernel/locking/lockdep.c:3213 [] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621 [] __pipe_lock fs/pipe.c:86 [inline] [] fifo_open+0x15d/0xa00 fs/pipe.c:896 [] do_dentry_open+0x38f/0xbd0 fs/open.c:749 [] vfs_open+0x10b/0x210 fs/open.c:862 [] do_last fs/namei.c:3269 [inline] [] path_openat+0x136f/0x4470 fs/namei.c:3406 [] do_filp_open+0x1a1/0x270 fs/namei.c:3440 [] do_open_execat+0x10c/0x6e0 fs/exec.c:805 [] do_execveat_common.isra.0+0x6f6/0x1e90 fs/exec.c:1577 [] do_execve fs/exec.c:1683 [inline] [] SYSC_execve fs/exec.c:1764 [inline] [] SyS_execve+0x42/0x50 fs/exec.c:1759 [] stub_execve+0x5/0x5 arch/x86/entry/entry_64.S:440 vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 1 PID: 8924 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 69b52cea5ca24b20 ffff8800b30979f0 ffffffff81aad1a1 1ffff10016612f41 ffff8801bf7ec740 00000000024000c2 0000000000000000 ffffffff82895080 ffff8800b3097b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:165158 inactive_anon:850 isolated_anon:0 active_file:4813 inactive_file:17060 isolated_file:0 unevictable:0 dirty:218 writeback:0 unstable:0 slab_reclaimable:5890 slab_unreclaimable:63360 mapped:59542 shmem:1014 pagetables:3097 bounce:0 free:1319101 free_pcp:475 free_cma:0 DMA32 free:2400604kB min:4696kB low:5868kB high:7044kB active_anon:310604kB inactive_anon:1556kB active_file:9504kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:652kB writeback:0kB mapped:107784kB shmem:2088kB slab_reclaimable:10760kB slab_unreclaimable:114884kB kernel_stack:3712kB pagetables:6624kB unstable:0kB bounce:0kB free_pcp:764kB local_pcp:224kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2860436kB min:5580kB low:6972kB high:8368kB active_anon:366328kB inactive_anon:1856kB active_file:9756kB inactive_file:35704kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:232kB writeback:0kB mapped:130532kB shmem:1976kB slab_reclaimable:12800kB slab_unreclaimable:138044kB kernel_stack:4352kB pagetables:5736kB unstable:0kB bounce:0kB free_pcp:1232kB local_pcp:648kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 2*4kB (E) 2*8kB (E) 371*16kB (UE) 252*32kB (UME) 99*64kB (UME) 24*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2400392kB Normal: 22*4kB (UM) 5*8kB (UM) 432*16kB (UE) 262*32kB (UME) 118*64kB (UM) 46*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2860224kB 22891 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 0 PID: 8964 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 3733e3799c66ae34 ffff8800a50179f0 ffffffff81aad1a1 1ffff10014a02f41 ffff8800b3f10000 00000000024000c2 0000000000000000 ffffffff82895080 ffff8800a5017b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169261 inactive_anon:851 isolated_anon:0 active_file:4819 inactive_file:17060 isolated_file:0 unevictable:0 dirty:224 writeback:0 unstable:0 slab_reclaimable:5882 slab_unreclaimable:63642 mapped:59542 shmem:1016 pagetables:3113 bounce:0 free:1314925 free_pcp:436 free_cma:0 DMA32 free:2400160kB min:4696kB low:5868kB high:7044kB active_anon:310376kB inactive_anon:1556kB active_file:9508kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:656kB writeback:0kB mapped:107784kB shmem:2092kB slab_reclaimable:10744kB slab_unreclaimable:115732kB kernel_stack:3712kB pagetables:6552kB unstable:0kB bounce:0kB free_pcp:832kB local_pcp:708kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2859180kB min:5580kB low:6972kB high:8368kB active_anon:366768kB inactive_anon:1848kB active_file:9768kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:240kB writeback:0kB mapped:130384kB shmem:1972kB slab_reclaimable:12784kB slab_unreclaimable:139036kB kernel_stack:4416kB pagetables:5900kB unstable:0kB bounce:0kB free_pcp:760kB local_pcp:644kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 2*4kB (E) 2*8kB (E) 268*16kB (UE) 283*32kB (UME) 105*64kB (UME) 24*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2400120kB Normal: 7*4kB (UM) 2*8kB (M) 329*16kB (UE) 284*32kB (UME) 123*64kB (UM) 46*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2859516kB 22894 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 0 PID: 8983 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 126bbddd2f92d81b ffff8800b3d479f0 ffffffff81aad1a1 1ffff100167a8f41 ffff8800bba92f80 00000000024000c2 0000000000000000 ffffffff82895080 ffff8800b3d47b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169303 inactive_anon:853 isolated_anon:0 active_file:4823 inactive_file:17060 isolated_file:0 unevictable:0 dirty:228 writeback:0 unstable:0 slab_reclaimable:5882 slab_unreclaimable:63707 mapped:59542 shmem:1017 pagetables:3149 bounce:0 free:1314851 free_pcp:448 free_cma:0 DMA32 free:2407996kB min:4696kB low:5868kB high:7044kB active_anon:302940kB inactive_anon:1556kB active_file:9516kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:664kB writeback:0kB mapped:107784kB shmem:2088kB slab_reclaimable:10744kB slab_unreclaimable:115416kB kernel_stack:3712kB pagetables:6300kB unstable:0kB bounce:0kB free_pcp:1412kB local_pcp:724kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2867568kB min:5580kB low:6972kB high:8368kB active_anon:357772kB inactive_anon:1856kB active_file:9776kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:248kB writeback:0kB mapped:130384kB shmem:1980kB slab_reclaimable:12784kB slab_unreclaimable:139188kB kernel_stack:4384kB pagetables:5852kB unstable:0kB bounce:0kB free_pcp:1352kB local_pcp:656kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 111*4kB (UME) 57*8kB (UME) 446*16kB (UME) 398*32kB (UME) 108*64kB (UME) 24*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2407716kB Normal: 67*4kB (M) 60*8kB (ME) 504*16kB (UME) 409*32kB (UME) 125*64kB (UM) 46*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2867148kB 22903 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 0 PID: 9023 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 093a3d8aae3d4f63 ffff8800b27379f0 ffffffff81aad1a1 1ffff100164e6f41 ffff8800bae00000 00000000024000c2 0000000000000000 ffffffff82895080 ffff8800b2737b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169217 inactive_anon:852 isolated_anon:0 active_file:4828 inactive_file:17060 isolated_file:0 unevictable:0 dirty:233 writeback:0 unstable:0 slab_reclaimable:5880 slab_unreclaimable:63759 mapped:59542 shmem:1015 pagetables:3071 bounce:0 free:1315056 free_pcp:372 free_cma:0 DMA32 free:2401112kB min:4696kB low:5868kB high:7044kB active_anon:310800kB inactive_anon:1556kB active_file:9516kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:664kB writeback:0kB mapped:107784kB shmem:2088kB slab_reclaimable:10744kB slab_unreclaimable:114932kB kernel_stack:3648kB pagetables:6480kB unstable:0kB bounce:0kB free_pcp:744kB local_pcp:248kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2858556kB min:5580kB low:6972kB high:8368kB active_anon:366068kB inactive_anon:1852kB active_file:9796kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:268kB writeback:0kB mapped:130384kB shmem:1972kB slab_reclaimable:12776kB slab_unreclaimable:140604kB kernel_stack:4448kB pagetables:5804kB unstable:0kB bounce:0kB free_pcp:840kB local_pcp:384kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 5*4kB (UME) 12*8kB (UME) 202*16kB (UME) 330*32kB (UME) 115*64kB (UME) 24*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2401300kB Normal: 141*4kB (UM) 63*8kB (UME) 414*16kB (UME) 423*32kB (UME) 129*64kB (UM) 46*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2866732kB 22906 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 1 PID: 9048 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 561028f93a31bbbf ffff8800a558f9f0 ffffffff81aad1a1 1ffff10014ab1f41 ffff8801d97997c0 00000000024000c2 0000000000000000 ffffffff82895080 ffff8800a558fb00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169238 inactive_anon:850 isolated_anon:0 active_file:4832 inactive_file:17060 isolated_file:0 unevictable:0 dirty:237 writeback:0 unstable:0 slab_reclaimable:5876 slab_unreclaimable:63614 mapped:59542 shmem:1015 pagetables:3134 bounce:0 free:1315178 free_pcp:271 free_cma:0 DMA32 free:2401988kB min:4696kB low:5868kB high:7044kB active_anon:309820kB inactive_anon:1556kB active_file:9520kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:668kB writeback:0kB mapped:107784kB shmem:2092kB slab_reclaimable:10728kB slab_unreclaimable:114768kB kernel_stack:3840kB pagetables:6472kB unstable:0kB bounce:0kB free_pcp:772kB local_pcp:656kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2858068kB min:5580kB low:6972kB high:8368kB active_anon:367132kB inactive_anon:1844kB active_file:9808kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:280kB writeback:0kB mapped:130384kB shmem:1968kB slab_reclaimable:12776kB slab_unreclaimable:140016kB kernel_stack:4384kB pagetables:5916kB unstable:0kB bounce:0kB free_pcp:904kB local_pcp:608kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 16*4kB (UME) 15*8kB (UME) 184*16kB (UME) 314*32kB (UME) 116*64kB (UME) 24*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2400632kB Normal: 1*4kB (M) 27*8kB (UME) 147*16kB (UME) 270*32kB (UME) 131*64kB (UM) 46*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2856844kB 22906 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 1 PID: 9076 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 b196536a6b7eb476 ffff8801be2979f0 ffffffff81aad1a1 1ffff10037c52f41 ffff8801d8af4740 00000000024000c2 0000000000000000 ffffffff82895080 ffff8801be297b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:165175 inactive_anon:855 isolated_anon:0 active_file:4837 inactive_file:17060 isolated_file:0 unevictable:0 dirty:242 writeback:0 unstable:0 slab_reclaimable:5864 slab_unreclaimable:63783 mapped:59533 shmem:1016 pagetables:3100 bounce:0 free:1318179 free_pcp:432 free_cma:0 DMA32 free:2404840kB min:4696kB low:5868kB high:7044kB active_anon:305140kB inactive_anon:1560kB active_file:9536kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:684kB writeback:0kB mapped:107784kB shmem:2092kB slab_reclaimable:10712kB slab_unreclaimable:115136kB kernel_stack:3520kB pagetables:6580kB unstable:0kB bounce:0kB free_pcp:412kB local_pcp:320kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2857980kB min:5580kB low:6972kB high:8368kB active_anon:365760kB inactive_anon:1860kB active_file:9812kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:284kB writeback:0kB mapped:130348kB shmem:1972kB slab_reclaimable:12744kB slab_unreclaimable:140096kB kernel_stack:4352kB pagetables:5820kB unstable:0kB bounce:0kB free_pcp:740kB local_pcp:568kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 4*4kB (UME) 3*8kB (UE) 145*16kB (UME) 289*32kB (UME) 118*64kB (UME) 25*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2399320kB Normal: 2*4kB (UM) 2*8kB (ME) 143*16kB (UE) 277*32kB (UME) 131*64kB (UM) 47*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2856936kB 22913 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 0 PID: 9113 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 efe242033171ed81 ffff8801be9c79f0 ffffffff81aad1a1 1ffff10037d38f41 ffff88009eca8000 00000000024000c2 0000000000000000 ffffffff82895080 ffff8801be9c7b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169264 inactive_anon:853 isolated_anon:0 active_file:4841 inactive_file:17061 isolated_file:0 unevictable:0 dirty:248 writeback:0 unstable:0 slab_reclaimable:5860 slab_unreclaimable:63979 mapped:59533 shmem:1015 pagetables:3109 bounce:0 free:1314009 free_pcp:272 free_cma:0 DMA32 free:2399748kB min:4696kB low:5868kB high:7044kB active_anon:310288kB inactive_anon:1560kB active_file:9540kB inactive_file:32544kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:696kB writeback:0kB mapped:107784kB shmem:2092kB slab_reclaimable:10696kB slab_unreclaimable:115144kB kernel_stack:3552kB pagetables:6560kB unstable:0kB bounce:0kB free_pcp:520kB local_pcp:256kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2855940kB min:5580kB low:6972kB high:8368kB active_anon:366868kB inactive_anon:1852kB active_file:9824kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:296kB writeback:0kB mapped:130348kB shmem:1968kB slab_reclaimable:12744kB slab_unreclaimable:141300kB kernel_stack:4224kB pagetables:5876kB unstable:0kB bounce:0kB free_pcp:380kB local_pcp:104kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 3*4kB (UE) 5*8kB (UE) 143*16kB (UME) 308*32kB (UME) 122*64kB (UME) 25*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2400164kB Normal: 0*4kB 3*8kB (UME) 71*16kB (UME) 280*32kB (UME) 133*64kB (UM) 47*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2856008kB 22917 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 1 PID: 9145 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 4155896cef20a260 ffff8801b78d79f0 ffffffff81aad1a1 1ffff10036f1af41 ffff8801b86e2f80 00000000024000c2 0000000000000000 ffffffff82895080 ffff8801b78d7b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169250 inactive_anon:852 isolated_anon:0 active_file:4846 inactive_file:17060 isolated_file:0 unevictable:0 dirty:251 writeback:0 unstable:0 slab_reclaimable:5850 slab_unreclaimable:64128 mapped:59542 shmem:1015 pagetables:3121 bounce:0 free:1314016 free_pcp:151 free_cma:0 DMA32 free:2399900kB min:4696kB low:5868kB high:7044kB active_anon:310260kB inactive_anon:1564kB active_file:9552kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:700kB writeback:0kB mapped:107784kB shmem:2096kB slab_reclaimable:10672kB slab_unreclaimable:115272kB kernel_stack:3680kB pagetables:6456kB unstable:0kB bounce:0kB free_pcp:596kB local_pcp:372kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2855940kB min:5580kB low:6972kB high:8368kB active_anon:366640kB inactive_anon:1844kB active_file:9832kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:304kB writeback:0kB mapped:130384kB shmem:1964kB slab_reclaimable:12728kB slab_unreclaimable:141008kB kernel_stack:4448kB pagetables:6028kB unstable:0kB bounce:0kB free_pcp:660kB local_pcp:448kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 2*4kB (E) 7*8kB (UME) 92*16kB (UME) 315*32kB (UME) 123*64kB (UME) 26*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2399776kB Normal: 1*4kB (U) 2*8kB (ME) 37*16kB (UME) 294*32kB (UME) 136*64kB (UM) 47*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2856100kB 22920 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313294 pages reserved vmalloc: allocation failure: 0 bytes syz-executor.0: page allocation failure: order:0, mode:0x24000c2 CPU: 1 PID: 9181 Comm: syz-executor.0 Not tainted 4.4.174+ #4 0000000000000000 767b095f6ffc34e0 ffff8801d0b679f0 ffffffff81aad1a1 1ffff1003a16cf41 ffff88009dc2c740 00000000024000c2 0000000000000000 ffffffff82895080 ffff8801d0b67b00 ffffffff8148c0cb ffffffff00000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757 [] __vmalloc_node_range mm/vmalloc.c:1693 [inline] [] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654 [] __vmalloc_node mm/vmalloc.c:1716 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1730 [inline] [] vmalloc+0x5c/0x70 mm/vmalloc.c:1745 [] sel_write_load+0x119/0xf90 security/selinux/selinuxfs.c:527 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Mem-Info: active_anon:169224 inactive_anon:853 isolated_anon:0 active_file:4852 inactive_file:17060 isolated_file:0 unevictable:0 dirty:257 writeback:0 unstable:0 slab_reclaimable:5838 slab_unreclaimable:64302 mapped:59542 shmem:1015 pagetables:3116 bounce:0 free:1313771 free_pcp:281 free_cma:0 DMA32 free:2399680kB min:4696kB low:5868kB high:7044kB active_anon:310044kB inactive_anon:1564kB active_file:9556kB inactive_file:32540kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:704kB writeback:0kB mapped:107784kB shmem:2092kB slab_reclaimable:10624kB slab_unreclaimable:115840kB kernel_stack:3520kB pagetables:6220kB unstable:0kB bounce:0kB free_pcp:572kB local_pcp:548kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3504 3504 Normal free:2855436kB min:5580kB low:6972kB high:8368kB active_anon:366896kB inactive_anon:1844kB active_file:9852kB inactive_file:35700kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:324kB writeback:0kB mapped:130384kB shmem:1968kB slab_reclaimable:12728kB slab_unreclaimable:141020kB kernel_stack:4544kB pagetables:6212kB unstable:0kB bounce:0kB free_pcp:616kB local_pcp:288kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA32: 2*4kB (E) 12*8kB (UE) 42*16kB (UE) 321*32kB (UME) 125*64kB (UME) 26*128kB (UME) 11*256kB (UM) 7*512kB (UME) 1*1024kB (M) 1*2048kB (M) 578*4096kB (UM) = 2399336kB Normal: 1*4kB (U) 6*8kB (UME) 32*16kB (UME) 276*32kB (UME) 137*64kB (UM) 47*128kB (UME) 14*256kB (UM) 3*512kB (UME) 2*1024kB (M) 3*2048kB (UME) 688*4096kB (M) = 2855540kB 22929 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM