BUG: Bad page map in process syz-executor0 pte:621bd007 pmd:1241ef067 page:ffffea00024ca6e0 count:0 mapcount:-1 mapping:0000000000000000 index:0x0 flags: 0x100000000000000() raw: 0100000000000000 ffffea00024ca6e8 ffffea00024ca6e8 0000000000000000 raw: 0000000000000000 0000000000000000 00000000fffffffe 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000001 0000000000000000 page dumped because: bad pte addr:00000000d6932011 vm_flags:100400fb anon_vma: (null) mapping:00000000be7a4a4f index:19d file:kcov fault: (null) mmap:kcov_mmap readpage: (null) CPU: 0 PID: 9273 Comm: syz-executor0 Not tainted 4.18.0-rc8+ #34 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+0x17c/0x1c0 lib/dump_stack.c:113 print_bad_pte+0xcae/0xde0 mm/memory.c:775 zap_pte_range mm/memory.c:1336 [inline] zap_pmd_range mm/memory.c:1436 [inline] zap_pud_range mm/memory.c:1465 [inline] zap_p4d_range mm/memory.c:1486 [inline] unmap_page_range+0x2119/0x3b60 mm/memory.c:1507 unmap_single_vma+0x445/0x5e0 mm/memory.c:1552 unmap_vmas+0x241/0x370 mm/memory.c:1582 exit_mmap+0x4d7/0x960 mm/mmap.c:3094 __mmput+0x154/0x5f0 kernel/fork.c:994 mmput+0xa7/0xe0 kernel/fork.c:1015 exit_mm+0x6dd/0x790 kernel/exit.c:545 do_exit+0xbf7/0x3890 kernel/exit.c:854 do_group_exit+0x1a0/0x350 kernel/exit.c:970 get_signal+0x1425/0x1ef0 kernel/signal.c:2468 do_signal+0x120/0x2090 arch/x86/kernel/signal.c:816 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x273/0x410 arch/x86/entry/common.c:197 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268 do_syscall_64+0x1ab/0x220 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457089 Code: fd b4 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fae91453cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000009300a8 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000009300a8 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000009300ac R13: 0000000000a3fb9f R14: 00007fae914549c0 R15: 0000000000000000 BUG: Bad rss-counter state mm:000000005e93e828 idx:0 val:13 cannot load conntrack support for proto=7 cannot load conntrack support for proto=7 netlink: 4 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor4'. IPVS: ftp: loaded support on port[0] = 21 cannot load conntrack support for proto=7 IPVS: ftp: loaded support on port[0] = 21 cannot load conntrack support for proto=7 cannot load conntrack support for proto=7 cannot load conntrack support for proto=7 cannot load conntrack support for proto=7 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 9608 Comm: syz-executor3 Tainted: G B 4.18.0-rc8+ #34 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+0x17c/0x1c0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x867/0xaa0 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3066 [inline] prepare_alloc_pages mm/page_alloc.c:4334 [inline] __alloc_pages_nodemask+0x5db/0x5c80 mm/page_alloc.c:4372 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:494 [inline] skb_page_frag_refill+0x3ab/0x590 net/core/sock.c:2218 tun_build_skb drivers/net/tun.c:1642 [inline] tun_get_user+0x10da/0x7f40 drivers/net/tun.c:1817 tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:2009 do_iter_readv_writev+0x872/0xa50 include/linux/fs.h:1787 do_iter_write+0x30d/0xd50 fs/read_write.c:959 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3be/0x820 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x456f41 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b6 fb ff c3 48 83 ec 08 e8 da 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 23 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f661f4e6ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000419 RCX: 0000000000456f41 RDX: 0000000000000001 RSI: 00007f661f4e6bf0 RDI: 00000000000000f0 RBP: 0000000020000700 R08: 00000000000000f0 R09: 0000000000000000 R10: 0000000000000064 R11: 0000000000000293 R12: 0000000000000003 R13: 00000000004d6410 R14: 00000000004c9a96 R15: 0000000000000000 cannot load conntrack support for proto=7 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 9693 Comm: syz-executor3 Tainted: G B 4.18.0-rc8+ #34 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+0x17c/0x1c0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x867/0xaa0 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3066 [inline] prepare_alloc_pages mm/page_alloc.c:4334 [inline] __alloc_pages_nodemask+0x5db/0x5c80 mm/page_alloc.c:4372 __alloc_pages include/linux/gfp.h:458 [inline] __alloc_pages_node include/linux/gfp.h:471 [inline] alloc_pages_node include/linux/gfp.h:485 [inline] kmsan_internal_alloc_meta_for_pages+0x8e/0x700 mm/kmsan/kmsan.c:667 kmsan_alloc_page+0x75/0xd0 mm/kmsan/kmsan_hooks.c:250 __alloc_pages_nodemask+0xf6b/0x5c80 mm/page_alloc.c:4409 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:494 [inline] skb_page_frag_refill+0x3ab/0x590 net/core/sock.c:2218 tun_build_skb drivers/net/tun.c:1642 [inline] tun_get_user+0x10da/0x7f40 drivers/net/tun.c:1817 tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:2009 do_iter_readv_writev+0x872/0xa50 include/linux/fs.h:1787 do_iter_write+0x30d/0xd50 fs/read_write.c:959 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3be/0x820 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x456f41 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b6 fb ff c3 48 83 ec 08 e8 da 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 23 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f661f4e6ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000419 RCX: 0000000000456f41 RDX: 0000000000000001 RSI: 00007f661f4e6bf0 RDI: 00000000000000f0 RBP: 0000000020000700 R08: 00000000000000f0 R09: 0000000000000000 R10: 0000000000000064 R11: 0000000000000293 R12: 0000000000000003 R13: 00000000004d6410 R14: 00000000004c9a96 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 9747 Comm: syz-executor3 Tainted: G B 4.18.0-rc8+ #34 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+0x17c/0x1c0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x867/0xaa0 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3066 [inline] prepare_alloc_pages mm/page_alloc.c:4334 [inline] __alloc_pages_nodemask+0x5db/0x5c80 mm/page_alloc.c:4372 __alloc_pages include/linux/gfp.h:458 [inline] __alloc_pages_node include/linux/gfp.h:471 [inline] alloc_pages_node include/linux/gfp.h:485 [inline] kmsan_internal_alloc_meta_for_pages+0xfa/0x700 mm/kmsan/kmsan.c:680 kmsan_alloc_page+0x75/0xd0 mm/kmsan/kmsan_hooks.c:250 __alloc_pages_nodemask+0xf6b/0x5c80 mm/page_alloc.c:4409 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:494 [inline] skb_page_frag_refill+0x3ab/0x590 net/core/sock.c:2218 tun_build_skb drivers/net/tun.c:1642 [inline] tun_get_user+0x10da/0x7f40 drivers/net/tun.c:1817 tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:2009 do_iter_readv_writev+0x872/0xa50 include/linux/fs.h:1787 do_iter_write+0x30d/0xd50 fs/read_write.c:959 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3be/0x820 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x456f41 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b6 fb ff c3 48 83 ec 08 e8 da 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 23 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f661f4e6ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000419 RCX: 0000000000456f41 RDX: 0000000000000001 RSI: 00007f661f4e6bf0 RDI: 00000000000000f0 RBP: 0000000020000700 R08: 00000000000000f0 R09: 0000000000000000 R10: 0000000000000064 R11: 0000000000000293 R12: 0000000000000003 R13: 00000000004d6410 R14: 00000000004c9a96 R15: 0000000000000002 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 9820 Comm: syz-executor3 Tainted: G B 4.18.0-rc8+ #34 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+0x17c/0x1c0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x867/0xaa0 lib/fault-inject.c:149 __should_failslab+0x278/0x2a0 mm/failslab.c:32 should_failslab+0x29/0x70 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slub.c:2646 [inline] slab_alloc mm/slub.c:2728 [inline] kmem_cache_alloc+0x126/0xb90 mm/slub.c:2733 __build_skb net/core/skbuff.c:282 [inline] build_skb+0xf8/0x680 net/core/skbuff.c:313 tun_build_skb drivers/net/tun.c:1711 [inline] tun_get_user+0x178d/0x7f40 drivers/net/tun.c:1817 tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:2009 do_iter_readv_writev+0x872/0xa50 include/linux/fs.h:1787 do_iter_write+0x30d/0xd50 fs/read_write.c:959 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3be/0x820 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x456f41 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b6 fb ff c3 48 83 ec 08 e8 da 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 23 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f661f4e6ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000419 RCX: 0000000000456f41 RDX: 0000000000000001 RSI: 00007f661f4e6bf0 RDI: 00000000000000f0 RBP: 0000000020000700 R08: 00000000000000f0 R09: 0000000000000000 R10: 0000000000000064 R11: 0000000000000293 R12: 0000000000000003 R13: 00000000004d6410 R14: 00000000004c9a96 R15: 0000000000000003