BUG: Bad page map in process syz-executor7 pte:600ea007 pmd:10b99f067 page:ffffea00024057c0 count:0 mapcount:-1 mapping:0000000000000000 index:0x0 flags: 0x100000000000000() raw: 0100000000000000 ffffea00024057c8 ffffea00024057c8 0000000000000000 raw: 0000000000000000 0000000000000000 00000000fffffffe 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000001 0000000000000000 page dumped because: bad pte addr:000000004822f9c3 vm_flags:100400fb anon_vma: (null) mapping:00000000acf537a6 index:4e file:kcov fault: (null) mmap:kcov_mmap readpage: (null) CPU: 1 PID: 15147 Comm: syz-executor7 Not tainted 4.19.0-rc1+ #36 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+0x14b/0x190 lib/dump_stack.c:113 print_bad_pte+0xc47/0xd40 mm/memory.c:774 zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1441 [inline] zap_pud_range mm/memory.c:1470 [inline] zap_p4d_range mm/memory.c:1491 [inline] unmap_page_range+0x1ee7/0x4170 mm/memory.c:1512 unmap_single_vma+0x445/0x5e0 mm/memory.c:1557 unmap_vmas+0x251/0x380 mm/memory.c:1587 exit_mmap+0x4b7/0x940 mm/mmap.c:3093 __mmput+0x154/0x5f0 kernel/fork.c:1003 mmput+0xa7/0xe0 kernel/fork.c:1024 exit_mm+0x6dd/0x790 kernel/exit.c:546 do_exit+0xbf7/0x3890 kernel/exit.c:856 do_group_exit+0x1a0/0x350 kernel/exit.c:972 get_signal+0x1425/0x1ef0 kernel/signal.c:2513 do_signal+0x11d/0x2060 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:00007f2938368cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00000000009301e8 RCX: 0000000000457089 RDX: 0000000000000058 RSI: 0000000000000001 RDI: 00000000009301ec RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000400 R11: 0000000000000246 R12: 00000000009301ec R13: 0000000000a3fb9f R14: 00007f29383699c0 R15: 0000000000000002 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready syz-executor3 (15182) used obsolete PPPIOCDETACH ioctl BUG: Bad rss-counter state mm:00000000cb2b40af idx:0 val:5 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 15191 Comm: syz-executor0 Tainted: G B 4.19.0-rc1+ #36 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+0x14b/0x190 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0xa98/0xaa0 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:2645 [inline] slab_alloc mm/slub.c:2727 [inline] __kmalloc+0xbe/0x350 mm/slub.c:3775 kmalloc_array include/linux/slab.h:635 [inline] rw_copy_check_uvector+0x173/0x740 fs/read_write.c:781 import_iovec+0x178/0x5c0 lib/iov_iter.c:1534 vfs_readv fs/read_write.c:984 [inline] do_preadv+0x310/0x570 fs/read_write.c:1070 __do_sys_preadv fs/read_write.c:1120 [inline] __se_sys_preadv fs/read_write.c:1115 [inline] __x64_sys_preadv+0x120/0x170 fs/read_write.c:1115 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 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:00007f5de994cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f5de994d6d4 RCX: 0000000000457089 RDX: 1000000000000106 RSI: 0000000020000480 RDI: 0000000000000004 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004d3528 R14: 00000000004c839c R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 15223 Comm: syz-executor0 Tainted: G B 4.19.0-rc1+ #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x14b/0x190 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0xa98/0xaa0 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:2645 [inline] __kmalloc_node+0x22a/0x11c0 mm/slub.c:3822 kmalloc_node include/linux/slab.h:555 [inline] kvmalloc_node+0x19d/0x3e0 mm/util.c:423 kvmalloc include/linux/mm.h:577 [inline] seq_buf_alloc fs/seq_file.c:32 [inline] seq_read+0x4b0/0x1e80 fs/seq_file.c:204 proc_reg_read+0x296/0x3c0 fs/proc/inode.c:231 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x890/0xe20 fs/read_write.c:924 vfs_readv fs/read_write.c:986 [inline] do_preadv+0x38e/0x570 fs/read_write.c:1070 IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready __do_sys_preadv fs/read_write.c:1120 [inline] __se_sys_preadv fs/read_write.c:1115 [inline] __x64_sys_preadv+0x120/0x170 fs/read_write.c:1115 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 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:00007f5de994cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f5de994d6d4 RCX: 0000000000457089 RDX: 1000000000000106 RSI: 0000000020000480 RDI: 0000000000000004 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004d3528 R14: 00000000004c839c R15: 0000000000000001 PANIC: double fault, error_code: 0x0 CPU: 0 PID: 15270 Comm: syz-executor7 Tainted: G B 4.19.0-rc1+ #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_cpu_entry_area+0x0/0x30 Code: a4 00 45 85 e4 79 ad e9 61 ff ff ff 49 89 d6 44 89 ff e8 83 a7 a4 00 89 c0 48 89 c1 48 c1 e1 20 48 09 c1 49 89 0e eb a0 90 90 <55> 48 89 e5 53 89 fb e8 f4 ac 49 00 48 63 c3 48 69 c8 00 b0 03 00 RSP: 0018:fffffe0000002000 EFLAGS: 00010093 RAX: 0000000000002150 RBX: 0000000000000088 RCX: 000000000000002e RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: fffffe0000002038 R08: 00000000009300ac R09: 00000000009300a0 R10: ffffffff88c00f48 R11: ffffffff88c00f48 R12: 0000000000000001 R13: fffffe0000002150 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f29383ab700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffe0000001ff8 CR3: 0000000108be8000 CR4: 00000000001406f0 Call Trace: kmsan_memmove_shadow+0x87/0xe0 mm/kmsan/kmsan.c:332 __msan_memmove+0xaa/0x130 mm/kmsan/kmsan_instr.c:376 fixup_bad_iret+0x85/0x110 arch/x86/kernel/traps.c:669 error_entry+0xe6/0xf0 arch/x86/entry/entry_64.S:1317 RIP: 0000: (null) Code: Bad RIP value. RSP: a3fb9f:00007f29383ab9c0 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: ffffffff88c00f48 RCX: 00000000004083c9 RDX: 08ecf9793de20a00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000009300a8 R10: 00000000009300a0 R11: 00000000009300ac R12: 0000000000000000 R13: 00000000009300a8 R14: 00000000009300a0 R15: 00000000009300ac