BUG: Bad page state in process syz-executor.0 pfn:0b336 page:ffffea00002ccd80 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x0 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Not tainted 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:1f347 page:ffffea00007cd1c0 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x1 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 0 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:1853e page:ffffea0000614f80 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x2 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:43d1e page:ffffea00010f4780 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x3 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000003 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:1a9bd page:ffffea00006a6f40 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x4 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:0b2dd page:ffffea00002cb740 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x5 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000005 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 0 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:7092a page:ffffea0001c24a80 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x6 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000006 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 0 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:199dc page:ffffea0000667700 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x7 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000007 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:1960f page:ffffea00006583c0 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x8 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:1971d page:ffffea000065c740 count:0 mapcount:0 mapping:ffff8880510f6340 index:0x9 shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 0000000000000009 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:260cd page:ffffea0000983340 count:0 mapcount:0 mapping:ffff8880510f6340 index:0xa shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 000000000000000a 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:308f3 page:ffffea0000c23cc0 count:0 mapcount:0 mapping:ffff8880510f6340 index:0xb shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 000000000000000b 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:0b337 page:ffffea00002ccdc0 count:0 mapcount:0 mapping:ffff8880510f6340 index:0xc shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 000000000000000c 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:2dd4a page:ffffea0000b75280 count:0 mapcount:0 mapping:ffff8880510f6340 index:0xd shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 000000000000000d 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:4a3cf page:ffffea000128f3c0 count:0 mapcount:0 mapping:ffff8880510f6340 index:0xe shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 000000000000000e 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 1 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff BUG: Bad page state in process syz-executor.0 pfn:1a9bc page:ffffea00006a6f00 count:0 mapcount:0 mapping:ffff8880510f6340 index:0xf shmem_aops name:"memfd:" flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) raw: 01fffc000008000c dead000000000100 dead000000000200 ffff8880510f6340 raw: 000000000000000f 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: non-NULL mapping Modules linked in: CPU: 0 PID: 20650 Comm: syz-executor.0 Tainted: G B 5.0.0-rc7-next-20190222 #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 bad_page.cold+0xda/0xff mm/page_alloc.c:586 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013 free_pages_check mm/page_alloc.c:1022 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_pcp_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare mm/page_alloc.c:3001 [inline] free_unref_page+0x3c6/0x600 mm/page_alloc.c:3050 __put_single_page mm/swap.c:79 [inline] __put_page+0x8d/0xd0 mm/swap.c:113 put_page include/linux/mm.h:1026 [inline] page_cache_pipe_buf_release+0x12b/0x180 fs/splice.c:94 pipe_buf_release include/linux/pipe_fs_i.h:129 [inline] iter_file_splice_write+0x7d1/0xbe0 fs/splice.c:759 do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x126/0x1a0 fs/splice.c:1019 splice_direct_to_actor+0x369/0x970 fs/splice.c:974 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062 do_sendfile+0x597/0xd00 fs/read_write.c:1442 __do_sys_sendfile64 fs/read_write.c:1503 [inline] __se_sys_sendfile64 fs/read_write.c:1489 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1489 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f417f6b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080002 R11: 0000000000000246 R12: 00007f417f6b46d4 R13: 00000000004c4dce R14: 00000000004d8af8 R15: 00000000ffffffff