syzbot


KASAN: wild-memory-access Read of size 37

Status: closed as invalid on 2019/01/01 20:10
First crash: 2396d, last: 2379d

Sample crash report:
syz-executor6: vmalloc: allocation failure: 17178820608 bytes[  108.395961] ==================================================================
BUG: KASAN: wild-memory-access on address ffe708746cae7000
Read of size 37 by task syz-executor2/20548
CPU: 1 PID: 20548 Comm: syz-executor2 Not tainted 4.9.56-g5c73594 #66
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a652fae8
 ffffffff81d93999 ffe708746cae7000 0000000000000025 0000000000000000
 ffff8801a551e900 ffe708746cae7000 ffff8801a652fb70 ffffffff8153d5cf
 0000000000000000 0000000000000001 ffffffff8266527bCall Trace:
 [<ffffffff81d93999>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93999>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153d5cf>] kasan_report_error mm/kasan/report.c:284 [inline]
 [<ffffffff8153d5cf>] kasan_report.part.1+0x40f/0x500 mm/kasan/report.c:309
 [<ffffffff8153d9a0>] kasan_report+0x20/0x30 mm/kasan/report.c:296
 [<ffffffff8153c2e7>] check_memory_region_inline mm/kasan/kasan.c:308 [inline]
 [<ffffffff8153c2e7>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:315
 [<ffffffff8153c351>] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:320
 [<ffffffff8266527b>] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
 [<ffffffff8266527b>] sg_read_oxfer drivers/scsi/sg.c:1978 [inline]
 [<ffffffff8266527b>] sg_read+0x124b/0x1400 drivers/scsi/sg.c:520
 [<ffffffff8156d893>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156ee27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff81572ac9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81572ac9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ad085>] entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
syz-executor6: 
vmalloc: allocation failure: 17178820608 bytes, mode:0x24000c2(GFP_KERNEL|__GFP_HIGHMEM)
CPU: 0 PID: 20555 Comm: syz-executor6 Tainted: G    B           4.9.56-g5c73594 #66
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff88017757f880
 ffffffff81d93999 1ffff1002eeaff13 ffff8801a605b000 ffffffff83ab7ac0
 0000000000000001 0000000000400000 ffff88017757f990 ffffffff814512b2
 024000c2a69e4caa 0000000041b58ab3 ffffffff8418ff9dCall Trace:
 [<ffffffff81d93999>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93999>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff814512b2>] warn_alloc+0x212/0x240 mm/page_alloc.c:3054
 [<ffffffff814ff025>] __vmalloc_node_range+0x3f5/0x5f0 mm/vmalloc.c:1722
 [<ffffffff814ff2eb>] __vmalloc_node mm/vmalloc.c:1744 [inline]
 [<ffffffff814ff2eb>] __vmalloc_node_flags mm/vmalloc.c:1758 [inline]
 [<ffffffff814ff2eb>] vmalloc+0x5b/0x70 mm/vmalloc.c:1773
 [<ffffffff8313c8f1>] xt_alloc_entry_offsets+0x41/0x60 net/netfilter/x_tables.c:722
 [<ffffffff83519a4a>] translate_table+0x21a/0x1e80 net/ipv6/netfilter/ip6_tables.c:730
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff8351d92e>] do_replace net/ipv6/netfilter/ip6_tables.c:1182 [inline]
 [<ffffffff8351d92e>] do_ip6t_set_ctl+0x2be/0x470 net/ipv6/netfilter/ip6_tables.c:1708
 [<ffffffff8309b017>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline]
 [<ffffffff8309b017>] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:114
 [<ffffffff834753a5>] ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:903
 [<ffffffff8322d0c2>] tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2705
 [<ffffffff82ed8245>] sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2707
 [<ffffffff82ed51e0>] SYSC_setsockopt net/socket.c:1771 [inline]
 [<ffffffff82ed51e0>] SyS_setsockopt+0x160/0x250 net/socket.c:1750
 [<ffffffff838ad085>] entry_SYSCALL_64_fastpath+0x23/0xc6
Mem-Info:
active_anon:82546 inactive_anon:2914 isolated_anon:0
 active_file:3806 inactive_file:5974 isolated_file:0
 unevictable:0 dirty:44 writeback:0 unstable:0
 slab_reclaimable:6654 slab_unreclaimable:54664
 mapped:25034 shmem:3071 pagetables:668 bounce:0
 free:1451870 free_pcp:471 free_cma:0
Node 0 active_anon:330184kB inactive_anon:11656kB active_file:15224kB inactive_file:23896kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:100136kB dirty:176kB writeback:0kB shmem:12284kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 28672kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
DMA free:15908kB min:160kB low:200kB high:240kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 0 2910 6411 6411DMA32 free:2981148kB min:30600kB low:38248kB high:45896kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2981844kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:696kB local_pcp:48kB free_cma:0kB
 0 0 3501 3501Normal free:2810424kB min:36816kB low:46020kB high:55224kB active_anon:330184kB inactive_anon:11656kB active_file:15224kB inactive_file:23896kB unevictable:0kB writepending:176kB present:4718592kB managed:3585220kB mlocked:0kB slab_reclaimable:26616kB slab_unreclaimable:218656kB kernel_stack:5920kB pagetables:2672kB bounce:0kB free_pcp:1188kB local_pcp:492kB free_cma:0kB
 0 0 0 0DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
12850 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
320236 pages reserved
9pnet_virtio: no channels available for device ./file0
9pnet_virtio: no channels available for device ./file0
IPVS: Creating netns size=2536 id=45
IPVS: Creating netns size=2536 id=46
, mode:0x24000c2(GFP_KERNEL|__GFP_HIGHMEM)
CPU: 1 PID: 20541 Comm: syz-executor6 Tainted: G    B           4.9.56-g5c73594 #66
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801ac997880 ffffffff81d93999 1ffff10035932f13 ffff8801d9894800
 ffffffff83ab7ac0 0000000000000001 0000000000400000 ffff8801ac997990
 ffffffff814512b2 024000c21e132a63 0000000041b58ab3 ffffffff8418ff9d
Call Trace:
 [<ffffffff81d93999>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93999>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff814512b2>] warn_alloc+0x212/0x240 mm/page_alloc.c:3054
 [<ffffffff814ff025>] __vmalloc_node_range+0x3f5/0x5f0 mm/vmalloc.c:1722
 [<ffffffff814ff2eb>] __vmalloc_node mm/vmalloc.c:1744 [inline]
 [<ffffffff814ff2eb>] __vmalloc_node_flags mm/vmalloc.c:1758 [inline]
 [<ffffffff814ff2eb>] vmalloc+0x5b/0x70 mm/vmalloc.c:1773
 [<ffffffff8313c8f1>] xt_alloc_entry_offsets+0x41/0x60 net/netfilter/x_tables.c:722
 [<ffffffff83519a4a>] translate_table+0x21a/0x1e80 net/ipv6/netfilter/ip6_tables.c:730
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff8351d92e>] do_replace net/ipv6/netfilter/ip6_tables.c:1182 [inline]
 [<ffffffff8351d92e>] do_ip6t_set_ctl+0x2be/0x470 net/ipv6/netfilter/ip6_tables.c:1708
 [<ffffffff8309b017>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline]
 [<ffffffff8309b017>] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:114
 [<ffffffff834753a5>] ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:903
 [<ffffffff8322d0c2>] tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2705
 [<ffffffff82ed8245>] sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2707
 [<ffffffff82ed51e0>] SYSC_setsockopt net/socket.c:1771 [inline]
 [<ffffffff82ed51e0>] SyS_setsockopt+0x160/0x250 net/socket.c:1750
 [<ffffffff838ad085>] entry_SYSCALL_64_fastpath+0x23/0xc6
Mem-Info:
active_anon:82012 inactive_anon:2913 isolated_anon:0
 active_file:3806 inactive_file:5985 isolated_file:0
 unevictable:0 dirty:79 writeback:0 unstable:0
 slab_reclaimable:6707 slab_unreclaimable:56574
 mapped:25033 shmem:3070 pagetables:650 bounce:0
 free:1450639 free_pcp:437 free_cma:0
Node 0 active_anon:328048kB inactive_anon:11652kB active_file:15224kB inactive_file:23940kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:100132kB dirty:316kB writeback:0kB shmem:12280kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
DMA free:15908kB min:160kB low:200kB high:240kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2910 6411 6411
DMA32 free:2981148kB min:30600kB low:38248kB high:45896kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2981844kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:696kB local_pcp:648kB free_cma:0kB
lowmem_reserve[]: 0 0 3501 3501
Normal free:2805452kB min:36816kB low:46020kB high:55224kB active_anon:328048kB inactive_anon:11652kB active_file:15224kB inactive_file:23940kB unevictable:0kB writepending:320kB present:4718592kB managed:3585220kB mlocked:0kB slab_reclaimable:26832kB slab_unreclaimable:226356kB kernel_stack:5792kB pagetables:2600kB bounce:0kB free_pcp:1032kB local_pcp:288kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
DMA32: 3*4kB (M) 2*8kB (M) 4*16kB (M) 2*32kB (M) 4*64kB (M) 3*128kB (M) 2*256kB (M) 2*512kB (M) 1*1024kB (M) 2*2048kB (M) 726*4096kB (M) = 2981148kB
Normal: 393*4kB (UME) 141*8kB (UME) 140*16kB (ME) 642*32kB (UME) 607*64kB (ME) 290*128kB (UME) 95*256kB (UME) 65*512kB (UM) 56*1024kB (UM) 54*2048kB (UM) 608*4096kB (UM) = 2817356kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
9992 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
320236 pages reserved
PF_BRIDGE: RTM_SETLINK with unknown ifindex
PF_BRIDGE: RTM_SETLINK with unknown ifindex
device lo entered promiscuous mode
device lo left promiscuous mode
binder: 20636:20652 ioctl 4c82 0 returned -22
device lo entered promiscuous mode
device lo left promiscuous mode
binder: 20636:20652 ioctl 4c82 0 returned -22
device lo entered promiscuous mode
device lo left promiscuous mode
binder: 20712:20713 ioctl 4c82 0 returned -22
device lo entered promiscuous mode
device lo left promiscuous mode
binder: 20712:20716 ioctl 4c82 0 returned -22
device gre0 entered promiscuous mode
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 20757 Comm: syz-executor2 Tainted: G    B           4.9.56-g5c73594 #66
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff880192c1e000 task.stack: ffff88019b0a0000
RIP: 0010:[<ffffffff8144e4b1>]  [<ffffffff8144e4b1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144e4b1>]  [<ffffffff8144e4b1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144e4b1>]  [<ffffffff8144e4b1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144e4b1>]  [<ffffffff8144e4b1>] put_page_testzero include/linux/mm.h:445 [inline]
RIP: 0010:[<ffffffff8144e4b1>]  [<ffffffff8144e4b1>] __free_pages+0x21/0x80 mm/page_alloc.c:3901
RSP: 0018:ffff88019b0a7ab0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffc90002917000
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff88019b0a7ac0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff10033614f38 R12: 0000000000000004
R13: 0000000000000020 R14: ffff88019ea82100 R15: dffffc0000000000
FS:  00007f9a6e6bd700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002087bffc CR3: 000000018ee08000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff880192c1e000 ffff88019ea82258 ffff88019b0a7b20 ffffffff82662871
 ffff88019ea82270 ffffed0033d5044b ffffed0033d5044e ffff88019ea82268
 dead4ead00000000 ffff88019ea82240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82662871>] sg_remove_scat.isra.20+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff82662c35>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff82662cf9>] sg_new_read.isra.21+0x39/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff826648d6>] sg_read+0x8a6/0x1400 drivers/scsi/sg.c:456
 [<ffffffff8156d893>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156ee27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff81572ac9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81572ac9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ad085>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: ff 66 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d 
RIP  [<ffffffff8144e4b1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144e4b1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144e4b1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144e4b1>] put_page_testzero include/linux/mm.h:445 [inline]
RIP  [<ffffffff8144e4b1>] __free_pages+0x21/0x80 mm/page_alloc.c:3901
 RSP <ffff88019b0a7ab0>
---[ end trace a53efd7ad40569e1 ]---

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/10/14 15:29 https://android.googlesource.com/kernel/common android-4.9 5c73594e214f b69d27d1 .config console log report ci-android-49-kasan-gce
2017/10/13 23:50 https://android.googlesource.com/kernel/common android-4.9 ed0b958299be c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/12 03:03 https://android.googlesource.com/kernel/common android-4.9 34e23dee72dd c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/11 18:01 https://android.googlesource.com/kernel/common android-4.9 34e23dee72dd c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/11 12:50 https://android.googlesource.com/kernel/common android-4.9 34e23dee72dd c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/10 02:21 https://android.googlesource.com/kernel/common android-4.9 e5eba30388a2 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/08 06:32 https://android.googlesource.com/kernel/common android-4.9 2b3a26c86b93 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/07 00:48 https://android.googlesource.com/kernel/common android-4.9 2b3a26c86b93 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/06 22:08 https://android.googlesource.com/kernel/common android-4.9 379e3b2a6d51 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/06 06:30 https://android.googlesource.com/kernel/common android-4.9 379e3b2a6d51 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/04 10:04 https://android.googlesource.com/kernel/common android-4.9 96a28fcc7c92 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/04 00:21 https://android.googlesource.com/kernel/common android-4.9 96a28fcc7c92 c26ea367 .config console log report ci-android-49-kasan-gce
2017/10/02 00:13 https://android.googlesource.com/kernel/common android-4.9 9b2b08179641 c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/30 01:15 https://android.googlesource.com/kernel/common android-4.9 9b2b08179641 c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/29 06:27 https://android.googlesource.com/kernel/common android-4.9 c30c69c76c1d c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/28 10:00 https://android.googlesource.com/kernel/common android-4.9 c30c69c76c1d c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/28 09:44 https://android.googlesource.com/kernel/common android-4.9 c30c69c76c1d c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/28 01:32 https://android.googlesource.com/kernel/common android-4.9 c30c69c76c1d c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/27 23:36 https://android.googlesource.com/kernel/common android-4.9 c30c69c76c1d c26ea367 .config console log report ci-android-49-kasan-gce
2017/09/27 16:19 https://android.googlesource.com/kernel/common android-4.9 c30c69c76c1d c26ea367 .config console log report ci-android-49-kasan-gce
* Struck through repros no longer work on HEAD.