lowmemorykiller: Killing 'syz-executor321' (2051) (tgid 2051), adj 1000, to free 44kB on behalf of 'syz-executor321' (2057) because cache 33668kB is below limit 65536kB for oom_score_adj 12 Free memory is -13312kB above reserved ================================= [ INFO: inconsistent lock state ] 4.9.193+ #0 Not tainted --------------------------------- inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-R} usage. syz-executor321/2057 [HC0[0]:SC0[0]:HE1:SE1] takes: (&mm->mmap_sem){+++++?}, at: [<00000000b8054b2d>] get_cmdline+0xa3/0x2d0 mm/util.c:641 mark_held_locks+0xb1/0x100 kernel/locking/lockdep.c:2660 __lockdep_trace_alloc kernel/locking/lockdep.c:2882 [inline] lockdep_trace_alloc+0x18c/0x2b0 kernel/locking/lockdep.c:2897 __alloc_pages_nodemask+0x143/0x1a80 mm/page_alloc.c:3803 __alloc_pages include/linux/gfp.h:433 [inline] __alloc_pages_node include/linux/gfp.h:446 [inline] alloc_pages_node include/linux/gfp.h:460 [inline] pmd_alloc_one arch/x86/include/asm/pgalloc.h:88 [inline] __pmd_alloc+0x4a/0x330 mm/memory.c:3742 pmd_alloc include/linux/mm.h:1625 [inline] alloc_new_pmd mm/mremap.c:64 [inline] move_page_tables+0xadb/0xd60 mm/mremap.c:212 shift_arg_pages+0x1ae/0x470 fs/exec.c:642 setup_arg_pages+0x60d/0x7c0 fs/exec.c:754 load_elf_binary+0xa84/0x4a90 fs/binfmt_elf.c:860 search_binary_handler fs/exec.c:1621 [inline] search_binary_handler+0x14f/0x700 fs/exec.c:1599 exec_binprm fs/exec.c:1663 [inline] do_execveat_common.isra.0+0xf81/0x1db0 fs/exec.c:1785 do_execve+0x3a/0x50 fs/exec.c:1829 run_init_process+0x33/0x37 init/main.c:904 try_to_run_init_process+0x18/0x48 init/main.c:913 kernel_init+0xf2/0x163 init/main.c:984 ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 irq event stamp: 572479 hardirqs last enabled at (572479): [<000000003e6e6261>] restore_regs_and_iret+0x0/0x1d hardirqs last disabled at (572478): [<0000000021eabaab>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:653 softirqs last enabled at (569036): [<00000000dd12071d>] __do_softirq+0x474/0x964 kernel/softirq.c:314 softirqs last disabled at (569029): [<0000000070a731f6>] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (569029): [<0000000070a731f6>] irq_exit+0x119/0x160 kernel/softirq.c:409 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&mm->mmap_sem); lock(&mm->mmap_sem); *** DEADLOCK *** 1 lock held by syz-executor321/2057: #0: (shrinker_rwsem){++++..}, at: [<000000004cd0ddd5>] shrink_slab.part.0+0xb2/0xa20 mm/vmscan.c:472 stack backtrace: CPU: 0 PID: 2057 Comm: syz-executor321 Not tainted 4.9.193+ #0 ffff8801cf2fefe0 ffffffff81b67081 00000000000000f0 ffff8801d2585f00 ffffffff83cb0990 ffff8801d25867f8 ffffffff84252000 ffff8801cf2ff058 ffffffff814087b0 0000000000000000 ffffffff00000001 0000000000000001 Call Trace: [<0000000018d456e1>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000018d456e1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000330ff9ca>] print_usage_bug kernel/locking/lockdep.c:2387 [inline] [<00000000330ff9ca>] print_usage_bug.cold+0x452/0x5a2 kernel/locking/lockdep.c:2354 [<000000002746ab64>] valid_state kernel/locking/lockdep.c:2400 [inline] [<000000002746ab64>] mark_lock_irq kernel/locking/lockdep.c:2602 [inline] [<000000002746ab64>] mark_lock+0x6c7/0x12e0 kernel/locking/lockdep.c:3065 [<000000008afa15b3>] mark_irqflags kernel/locking/lockdep.c:2958 [inline] [<000000008afa15b3>] __lock_acquire+0x5be/0x4390 kernel/locking/lockdep.c:3302 [<000000001f8ace93>] lock_acquire+0x133/0x3d0 kernel/locking/lockdep.c:3756 [<0000000092aff8d5>] down_read+0x44/0xb0 kernel/locking/rwsem.c:22 [<00000000b8054b2d>] get_cmdline+0xa3/0x2d0 mm/util.c:641 [<00000000f115664c>] handle_lmk_event+0x169/0x920 drivers/staging/android/lowmemorykiller.c:116 [<00000000116f141c>] lowmem_scan+0x6f3/0xb70 drivers/staging/android/lowmemorykiller.c:354 [<000000008c8ed04d>] do_shrink_slab mm/vmscan.c:399 [inline] [<000000008c8ed04d>] shrink_slab.part.0+0x3cf/0xa20 mm/vmscan.c:502 [<00000000964e902c>] shrink_slab mm/vmscan.c:466 [inline] [<00000000964e902c>] shrink_node+0x1ed/0x750 mm/vmscan.c:2604 [<000000000f4fdfa9>] shrink_zones mm/vmscan.c:2751 [inline] [<000000000f4fdfa9>] do_try_to_free_pages mm/vmscan.c:2793 [inline] [<000000000f4fdfa9>] try_to_free_pages+0x397/0xbd0 mm/vmscan.c:3004 [<0000000007eedb99>] __perform_reclaim mm/page_alloc.c:3332 [inline] [<0000000007eedb99>] __alloc_pages_direct_reclaim mm/page_alloc.c:3354 [inline] [<0000000007eedb99>] __alloc_pages_slowpath mm/page_alloc.c:3704 [inline] [<0000000007eedb99>] __alloc_pages_nodemask+0x930/0x1a80 mm/page_alloc.c:3861 [<00000000c8a282f2>] __alloc_pages include/linux/gfp.h:433 [inline] [<00000000c8a282f2>] __alloc_pages_node include/linux/gfp.h:446 [inline] [<00000000c8a282f2>] alloc_pages_node include/linux/gfp.h:460 [inline] [<00000000c8a282f2>] __vmalloc_area_node mm/vmalloc.c:1648 [inline] [<00000000c8a282f2>] __vmalloc_node_range+0x25b/0x610 mm/vmalloc.c:1706 [<000000005f88dc00>] __vmalloc_node mm/vmalloc.c:1755 [inline] [<000000005f88dc00>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline] [<000000005f88dc00>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784 [<00000000c86bc94a>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997 [<0000000098ea1c3f>] do_replace.isra.0+0x111/0x480 net/ipv4/netfilter/arp_tables.c:979 [<000000003ffa0122>] do_arpt_set_ctl+0x108/0x150 net/ipv4/netfilter/arp_tables.c:1469 [<00000000bbb25370>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] [<00000000bbb25370>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114 [<00000000700fcab4>] ip_setsockopt net/ipv4/ip_sockglue.c:1247 [inline] [<00000000700fcab4>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1232 [<0000000043dc8f3c>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline] [<0000000043dc8f3c>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753 [<0000000056d5cfb7>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb oom_reaper: reaped process 2051 (syz-executor321), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB syz-executor321 invoked oom-killer: gfp_mask=0x24002c2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN), nodemask=0, order=0, oom_score_adj=1000 CPU: 1 PID: 2058 Comm: syz-executor321 Not tainted 4.9.193+ #0 ffff8801cee176a8 ffffffff81b67081 ffff8801cee17a00 ffffffff833f1c30 00000000000003e8 ffff8801cee17a18 0000000000000000 ffff8801cee17728 ffffffff81506ee4 0000000000000000 00000000000003e8 ffffffff8282a8c5 Call Trace: [<0000000018d456e1>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000018d456e1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000f0c8fd19>] dump_header.isra.0+0x142/0x74c mm/oom_kill.c:417 [<0000000083049705>] oom_kill_process.cold+0xd/0xa74 mm/oom_kill.c:852 [<00000000a5760503>] out_of_memory mm/oom_kill.c:1069 [inline] [<00000000a5760503>] out_of_memory+0x29b/0xea0 mm/oom_kill.c:1009 [<00000000a6219cc8>] __alloc_pages_may_oom mm/page_alloc.c:3136 [inline] [<00000000a6219cc8>] __alloc_pages_slowpath mm/page_alloc.c:3750 [inline] [<00000000a6219cc8>] __alloc_pages_nodemask+0x1730/0x1a80 mm/page_alloc.c:3861 [<00000000c8a282f2>] __alloc_pages include/linux/gfp.h:433 [inline] [<00000000c8a282f2>] __alloc_pages_node include/linux/gfp.h:446 [inline] [<00000000c8a282f2>] alloc_pages_node include/linux/gfp.h:460 [inline] [<00000000c8a282f2>] __vmalloc_area_node mm/vmalloc.c:1648 [inline] [<00000000c8a282f2>] __vmalloc_node_range+0x25b/0x610 mm/vmalloc.c:1706 [<000000005f88dc00>] __vmalloc_node mm/vmalloc.c:1755 [inline] [<000000005f88dc00>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline] [<000000005f88dc00>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784 [<00000000c86bc94a>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997 [<0000000098ea1c3f>] do_replace.isra.0+0x111/0x480 net/ipv4/netfilter/arp_tables.c:979 [<000000003ffa0122>] do_arpt_set_ctl+0x108/0x150 net/ipv4/netfilter/arp_tables.c:1469 [<00000000bbb25370>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] [<00000000bbb25370>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114 [<00000000700fcab4>] ip_setsockopt net/ipv4/ip_sockglue.c:1247 [inline] [<00000000700fcab4>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1232 [<0000000043dc8f3c>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline] [<0000000043dc8f3c>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753 [<0000000056d5cfb7>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Mem-Info: active_anon:3239 inactive_anon:40 isolated_anon:0 active_file:7 inactive_file:30 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:4254 slab_unreclaimable:56843 mapped:12 shmem:48 pagetables:362 bounce:0 free:6027 free_pcp:68 free_cma:0 Node 0 active_anon:12956kB inactive_anon:160kB active_file:28kB inactive_file:120kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:48kB dirty:0kB writeback:0kB shmem:192kB writeback_tmp:0kB unstable:0kB pages_scanned:14 all_unreclaimable? no DMA32 free:18612kB min:4696kB low:7712kB high:10728kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3020092kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:120kB local_pcp:120kB free_cma:0kB Normal free:5496kB min:5580kB low:9168kB high:12756kB active_anon:12956kB inactive_anon:160kB active_file:28kB inactive_file:120kB unevictable:0kB writepending:0kB present:4718592kB managed:3589316kB mlocked:0kB slab_reclaimable:17016kB slab_unreclaimable:227372kB kernel_stack:3456kB pagetables:1448kB bounce:0kB free_pcp:152kB local_pcp:152kB free_cma:0kB DMA32: 5*4kB (UM) 2*8kB (UM) 3*16kB (UM) 1*32kB (M) 1*64kB (M) 4*128kB (UM) 4*256kB (UM) 1*512kB (M) 2*1024kB (M) 1*2048kB (M) 3*4096kB (M) = 18612kB 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 313627 pages reserved [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [ 470] 0 470 5384 180 17 3 0 -1000 udevd [ 581] 0 581 5383 173 16 3 0 -1000 udevd [ 582] 0 582 5383 174 16 3 0 -1000 udevd [ 1751] 0 1751 2492 574 8 3 0 0 dhclient [ 1890] 0 1890 14264 108 24 3 0 0 rsyslogd [ 1921] 0 1921 4724 50 15 3 0 0 cron [ 1949] 0 1949 3734 44 11 3 0 0 mcstransd [ 1973] 0 1973 12926 1227 26 3 0 0 restorecond [ 1987] 0 1987 12489 152 28 3 0 -1000 sshd [ 2021] 0 2021 3648 39 13 3 0 0 getty [ 2040] 0 2040 3648 43 13 3 0 0 getty [ 2041] 0 2041 3648 44 14 3 0 0 getty [ 2042] 0 2042 3648 43 12 3 0 0 getty [ 2043] 0 2043 3648 42 14 3 0 0 getty [ 2044] 0 2044 3648 43 12 3 0 0 getty [ 2045] 0 2045 3648 43 13 3 0 0 getty [ 2046] 0 2046 17820 198 41 3 0 0 sshd [ 2048] 0 2048 4380 1 4 2 0 0 syz-executor321 [ 2049] 0 2049 4380 11 4 2 0 0 syz-executor321 [ 2050] 0 2050 4380 11 4 2 0 0 syz-executor321 [ 2051] 0 2051 4380 0 5 2 0 1000 syz-executor321 [ 2052] 0 2052 4380 11 4 2 0 0 syz-executor321 [ 2053] 0 2053 4380 11 4 2 0 0 syz-executor321 [ 2054] 0 2054 4380 11 4 2 0 0 syz-executor321 [ 2055] 0 2055 4380 11 4 2 0 0 syz-executor321 [ 2056] 0 2056 4380 11 5 2 0 1000 syz-executor321 [ 2057] 0 2057 4380 11 5 2 0 1000 syz-executor321 [ 2058] 0 2058 4380 11 5 2 0 1000 syz-executor321 [ 2059] 0 2059 4380 11 5 2 0 1000 syz-executor321 [ 2060] 0 2060 4380 11 5 2 0 1000 syz-executor321 Out of memory: Kill process 2056 (syz-executor321) score 999 or sacrifice child Killed process 2056 (syz-executor321) total-vm:17520kB, anon-rss:44kB, file-rss:0kB, shmem-rss:0kB syz-executor321: vmalloc: allocation failure, allocated 1192177664 of 4294975488 bytes, mode:0x24000c2(GFP_KERNEL|__GFP_HIGHMEM) CPU: 1 PID: 2051 Comm: syz-executor321 Not tainted 4.9.193+ #0 ffff8801d1397980 ffffffff81b67081 1ffff1003a272f32 dffffc0000000000 ffffffff82aab400 0000000000000000 0000000000400000 ffff8801d1397aa8 ffffffff8150819c 0000000041b58ab3 ffffffff82e3bbf0 ffffffff81431da0 Call Trace: [<0000000018d456e1>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000018d456e1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<000000004b3a8b66>] warn_alloc.cold+0x76/0x93 mm/page_alloc.c:3069 [<000000003dda60c0>] __vmalloc_area_node mm/vmalloc.c:1665 [inline] [<000000003dda60c0>] __vmalloc_node_range+0x404/0x610 mm/vmalloc.c:1706 [<000000005f88dc00>] __vmalloc_node mm/vmalloc.c:1755 [inline] [<000000005f88dc00>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline] [<000000005f88dc00>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784 [<00000000c86bc94a>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997 [<0000000098ea1c3f>] do_replace.isra.0+0x111/0x480 net/ipv4/netfilter/arp_tables.c:979 [<000000003ffa0122>] do_arpt_set_ctl+0x108/0x150 net/ipv4/netfilter/arp_tables.c:1469 [<00000000bbb25370>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] [<00000000bbb25370>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114 [<00000000700fcab4>] ip_setsockopt net/ipv4/ip_sockglue.c:1247 [inline] [<00000000700fcab4>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1232 [<0000000043dc8f3c>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline] [<0000000043dc8f3c>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753 [<0000000056d5cfb7>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Mem-Info: active_anon:3231 inactive_anon:40 isolated_anon:0 active_file:7 inactive_file:28 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:4254 slab_unreclaimable:56843 mapped:12 shmem:48 pagetables:362 bounce:0 free:0 free_pcp:0 free_cma:0 Node 0 active_anon:12924kB inactive_anon:160kB active_file:28kB inactive_file:112kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:48kB dirty:0kB writeback:0kB shmem:192kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no DMA32 free:36kB min:4696kB low:7712kB high:10728kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3020092kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Normal free:0kB min:5580kB low:9168kB high:12756kB active_anon:12924kB inactive_anon:160kB active_file:28kB inactive_file:112kB unevictable:0kB writepending:0kB present:4718592kB managed:3589316kB mlocked:0kB slab_reclaimable:17016kB slab_unreclaimable:227372kB kernel_stack:3456kB pagetables:1448kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB 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 313627 pages reserved oom_reaper: reaped process 2056 (syz-executor321), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB syz-executor321: vmalloc: allocation failure, allocated 1147949056 of 4294975488 bytes, mode:0x24000c2(GFP_KERNEL|__GFP_HIGHMEM) CPU: 0 PID: 2056 Comm: syz-executor321 Not tainted 4.9.193+ #0 ffff8801cf117980 ffffffff81b67081 1ffff10039e22f32 dffffc0000000000 ffffffff82aab400 0000000000000000 0000000000400000 ffff8801cf117aa8 ffffffff8150819c 0000000041b58ab3 ffffffff82e3bbf0 ffffffff81431da0 Call Trace: [<0000000018d456e1>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000018d456e1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<000000004b3a8b66>] warn_alloc.cold+0x76/0x93 mm/page_alloc.c:3069 [<000000003dda60c0>] __vmalloc_area_node mm/vmalloc.c:1665 [inline] [<000000003dda60c0>] __vmalloc_node_range+0x404/0x610 mm/vmalloc.c:1706 [<000000005f88dc00>] __vmalloc_node mm/vmalloc.c:1755 [inline] [<000000005f88dc00>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline] [<000000005f88dc00>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784 [<00000000c86bc94a>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997 [<0000000098ea1c3f>] do_replace.isra.0+0x111/0x480 net/ipv4/netfilter/arp_tables.c:979 [<000000003ffa0122>] do_arpt_set_ctl+0x108/0x150 net/ipv4/netfilter/arp_tables.c:1469 [<00000000bbb25370>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] [<00000000bbb25370>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114 [<00000000700fcab4>] ip_setsockopt net/ipv4/ip_sockglue.c:1247 [inline] [<00000000700fcab4>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1232 [<0000000043dc8f3c>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline] [<0000000043dc8f3c>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753 [<0000000056d5cfb7>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Mem-Info: active_anon:3231 inactive_anon:40 isolated_anon:0 active_file:4 inactive_file:28 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:4254 slab_unreclaimable:56843 mapped:7 shmem:48 pagetables:362 bounce:0 free:14 free_pcp:8 free_cma:0 Node 0 active_anon:12924kB inactive_anon:160kB active_file:16kB inactive_file:112kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:28kB dirty:0kB writeback:0kB shmem:192kB writeback_tmp:0kB unstable:0kB pages_scanned:1 all_unreclaimable? no DMA32 free:36kB min:4696kB low:7712kB high:10728kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3020092kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Normal free:20kB min:5580kB low:9168kB high:12756kB active_anon:12924kB inactive_anon:160kB active_file:16kB inactive_file:112kB unevictable:0kB writepending:0kB present:4718592kB managed:3589316kB mlocked:0kB slab_reclaimable:17016kB slab_unreclaimable:227372kB kernel_stack:3456kB pagetables:1448kB bounce:0kB free_pcp:32kB local_pcp:0kB free_cma:0kB DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB 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 313627 pages reserved syz-executor321 invoked oom-killer: gfp_mask=0x24002c2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN), nodemask=0, order=0, oom_score_adj=1000 CPU: 0 PID: 2059 Comm: syz-executor321 Not tainted 4.9.193+ #0 ffff8801c4cc76a8 ffffffff81b67081 ffff8801c4cc7a00 ffffffff833f1c30 00000000000003e8 ffff8801c4cc7a18 0000000000000000 ffff8801c4cc7728 ffffffff81506ee4 0000000000000000 00000000000003e8 ffffffff8282a8c5 Call Trace: [<0000000018d456e1>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000018d456e1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000f0c8fd19>] dump_header.isra.0+0x142/0x74c mm/oom_kill.c:417 [<0000000083049705>] oom_kill_process.cold+0xd/0xa74 mm/oom_kill.c:852 [<00000000a5760503>] out_of_memory mm/oom_kill.c:1069 [inline] [<00000000a5760503>] out_of_memory+0x29b/0xea0 mm/oom_kill.c:1009 [<00000000a6219cc8>] __alloc_pages_may_oom mm/page_alloc.c:3136 [inline] [<00000000a6219cc8>] __alloc_pages_slowpath mm/page_alloc.c:3750 [inline] [<00000000a6219cc8>] __alloc_pages_nodemask+0x1730/0x1a80 mm/page_alloc.c:3861 [<00000000c8a282f2>] __alloc_pages include/linux/gfp.h:433 [inline] [<00000000c8a282f2>] __alloc_pages_node include/linux/gfp.h:446 [inline] [<00000000c8a282f2>] alloc_pages_node include/linux/gfp.h:460 [inline] [<00000000c8a282f2>] __vmalloc_area_node mm/vmalloc.c:1648 [inline] [<00000000c8a282f2>] __vmalloc_node_range+0x25b/0x610 mm/vmalloc.c:1706 [<000000005f88dc00>] __vmalloc_node mm/vmalloc.c:1755 [inline] [<000000005f88dc00>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline] [<000000005f88dc00>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784 [<00000000c86bc94a>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997 [<0000000098ea1c3f>] do_replace.isra.0+0x111/0x480 net/ipv4/netfilter/arp_tables.c:979 [<000000003ffa0122>] do_arpt_set_ctl+0x108/0x150 net/ipv4/netfilter/arp_tables.c:1469 [<00000000bbb25370>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] [<00000000bbb25370>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114 [<00000000700fcab4>] ip_setsockopt net/ipv4/ip_sockglue.c:1247 [inline] [<00000000700fcab4>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1232 [<0000000043dc8f3c>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline] [<0000000043dc8f3c>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753 [<0000000056d5cfb7>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Mem-Info: active_anon:3231 inactive_anon:40 isolated_anon:0 active_file:4 inactive_file:28 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:4254 slab_unreclaimable:56843 mapped:7 shmem:48 pagetables:362 bounce:0 free:14 free_pcp:0 free_cma:0 Node 0 active_anon:12924kB inactive_anon:160kB active_file:16kB inactive_file:112kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:28kB dirty:0kB writeback:0kB shmem:192kB writeback_tmp:0kB unstable:0kB pages_scanned:1 all_unreclaimable? no DMA32 free:36kB min:4696kB low:7712kB high:10728kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3020092kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Normal free:20kB min:5580kB low:9168kB high:12756kB active_anon:12924kB inactive_anon:160kB active_file:16kB inactive_file:112kB unevictable:0kB writepending:0kB present:4718592kB managed:3589316kB mlocked:0kB slab_reclaimable:17016kB slab_unreclaimable:227372kB kernel_stack:3456kB pagetables:1448kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB 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 313627 pages reserved [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [ 470] 0 470 5384 180 17 3 0 -1000 udevd [ 581] 0 581 5383 173 16 3 0 -1000 udevd [ 582] 0 582 5383 174 16 3 0 -1000 udevd [ 1751] 0 1751 2492 574 8 3 0 0 dhclient [ 1890] 0 1890 14264 108 24 3 0 0 rsyslogd [ 1921] 0 1921 4724 50 15 3 0 0 cron [ 1949] 0 1949 3734 44 11 3 0 0 mcstransd [ 1973] 0 1973 12926 1227 26 3 0 0 restorecond [ 1987] 0 1987 12489 152 28 3 0 -1000 sshd [ 2021] 0 2021 3648 39 13 3 0 0 getty [ 2040] 0 2040 3648 43 13 3 0 0 getty [ 2041] 0 2041 3648 44 14 3 0 0 getty [ 2042] 0 2042 3648 43 12 3 0 0 getty [ 2043] 0 2043 3648 42 14 3 0 0 getty [ 2044] 0 2044 3648 43 12 3 0 0 getty [ 2045] 0 2045 3648 43 13 3 0 0 getty [ 2046] 0 2046 17820 198 41 3 0 0 sshd [ 2048] 0 2048 4380 1 4 2 0 0 syz-executor321 [ 2049] 0 2049 4380 11 4 2 0 0 syz-executor321 [ 2050] 0 2050 4380 11 4 2 0 0 syz-executor321 [ 2051] 0 2051 4380 0 5 2 0 1000 syz-executor321 [ 2052] 0 2052 4380 11 4 2 0 0 syz-executor321 [<000000003ffa0122>] do_arpt_set_ctl+0x108/0x150 net/ipv4/netfilter/arp_tables.c:1469 [<00000000bbb25370>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] [<00000000bbb25370>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114 [<00000000700fcab4>] ip_setsockopt net/ipv4/ip_sockglue.c:1247 [inline] [<00000000700fcab4>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1232 [<0000000043dc8f3c>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline] [<0000000043dc8f3c>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753 [<0000000056d5cfb7>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Mem-Info: active_anon:3239 inactive_anon:40 isolated_anon:0 active_file:29 inactive_file:41 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:4262 slab_unreclaimable:56698 mapped:48 shmem:48 pagetables:362 bounce:0 free:23 free_pcp:0 free_cma:0 Node 0 active_anon:12956kB inactive_anon:160kB active_file:116kB inactive_file:164kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:192kB dirty:0kB writeback:0kB shmem:192kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no DMA32 free:32kB min:4696kB low:7712kB high:10728kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3020092kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Normal free:60kB min:5580kB low:9168kB high:12756kB active_anon:12956kB inactive_anon:160kB active_file:116kB inactive_file:164kB unevictable:0kB writepending:0kB present:4718592kB managed:3589316kB mlocked:0kB slab_reclaimable:17048kB slab_unreclaimable:226792kB kernel_stack:3456kB pagetables:1448kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB 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 [<00000000c8a282f2>] __alloc_pages include/linux/gfp.h:433 [inline] [<00000000c8a282f2>] __alloc_pages_node include/linux/gfp.h:446 [inline] [<00000000c8a282f2>] alloc_pages_node include/linux/gfp.h:460 [inline] [<00000000c8a282f2>] __vmalloc_area_node mm/vmalloc.c:1648 [inline] [<00000000c8a282f2>] __vmalloc_node_range+0x25b/0x610 mm/vmalloc.c:1706 [<000000003dda60c0>] __vmalloc_area_node mm/vmalloc.c:1665 [inline] [<000000003dda60c0>] __vmalloc_node_range+0x404/0x610 mm/vmalloc.c:1706 [<000000005f88dc00>] __vmalloc_node mm/vmalloc.c:1755 [inline] [<000000005f88dc00>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline] [<000000005f88dc00>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784 0*2048kB ** 99 printk messages dropped ** [ 39.041824] lowmem_reserve[]: 0 0 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB 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 313627 pages reserved lowmemorykiller: Killing 'syz-executor321' (2063) (tgid 2063), adj 1000, to free 44kB on behalf of 'syz-executor321' (2067) because cache 128kB is below limit 6144kB for oom_score_adj 0 Free memory is -10864kB above reserved syz-executor321: vmalloc: allocation failure, allocated 1310978048 of 4294975488 bytes, mode:0x24000c2(GFP_KERNEL|__GFP_HIGHMEM) CPU: 1 PID: 2063 Comm: syz-executor321 Not tainted 4.9.193+ #0 ffff8801c0f6f980 ffffffff81b67081 1ffff100381edf32 dffffc0000000000 ffffffff82aab400 0000000000000000 0000000000400000 ffff8801c0f6faa8 ffffffff8150819c 0000000041b58ab3 ffffffff82e3bbf0 ffffffff81431da0 [<0000000006e5faaa>] SYSC_setsockopt net/socket.c:1786 [inline] [<0000000006e5faaa>] SyS_setsockopt+0x159/0x240 net/socket.c:1765 [<000000007c8e5a5f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000061419cbd>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Mem-Info: active_anon:3231 inactive_anon:40 isolated_anon:0 active_file:22 inactive_file:46 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:4262 slab_unreclaimab