general protection fault, probably for non-canonical address 0xe3fffb24000d13d0: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x1ffff92000689e80-0x1ffff92000689e87] CPU: 1 PID: 13479 Comm: syz-executor.4 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:PagePoisoned include/linux/page-flags.h:304 [inline] RIP: 0010:PageHead include/linux/page-flags.h:787 [inline] RIP: 0010:PageHeadHuge+0x1d/0x200 mm/hugetlb.c:1892 Code: ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 54 55 48 89 fd 53 e8 64 af b9 ff 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 a2 01 00 00 48 8b 5d 00 48 c7 c7 ff ff ff ff 48 RSP: 0018:ffffc9000344f360 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffc9000344f548 RCX: ffffc90005252000 RDX: 03ffff24000d13d0 RSI: ffffffff81c2e49c RDI: 1ffff92000689e81 RBP: 1ffff92000689e81 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffc9000344f558 R13: 1ffff92000689e81 R14: 1ffff92000689e81 R15: 000000000000026a FS: 00007f4e9c161700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002026a000 CR3: 000000008934d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: folio_test_hugetlb include/linux/page-flags.h:831 [inline] folio_file_page include/linux/pagemap.h:683 [inline] shmem_fault+0x27c/0x8a0 mm/shmem.c:2130 __do_fault+0x107/0x600 mm/memory.c:4191 do_shared_fault mm/memory.c:4597 [inline] do_fault mm/memory.c:4675 [inline] handle_pte_fault mm/memory.c:4943 [inline] __handle_mm_fault+0x2200/0x3a40 mm/memory.c:5085 handle_mm_fault+0x1c8/0x780 mm/memory.c:5206 do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1428 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x94/0x170 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166 Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc9000344f7c8 EFLAGS: 00050206 RAX: 0000000000000001 RBX: 0000000000008000 RCX: 00000000000061e4 RDX: 0000000000008000 RSI: ffff8881564c1e1c RDI: 000000002026a000 RBP: 00007fffffff7000 R08: 0000000000000000 R09: ffff8881564c7fff R10: ffffed102ac98fff R11: 0000000000000000 R12: 00000000202681e4 R13: ffff8881564c0000 R14: ffff8881564c0000 R15: 0000000000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline] copyout lib/iov_iter.c:170 [inline] copyout+0xf6/0x120 lib/iov_iter.c:164 _copy_to_iter+0x531/0x1140 lib/iov_iter.c:527 copy_to_iter include/linux/uio.h:176 [inline] simple_copy_to_iter+0x4c/0x70 net/core/datagram.c:513 __skb_datagram_iter+0x4a5/0x770 net/core/datagram.c:442 skb_copy_datagram_iter+0xd3/0x350 net/core/datagram.c:527 skb_copy_datagram_msg include/linux/skbuff.h:3901 [inline] unix_stream_read_actor+0x78/0xc0 net/unix/af_unix.c:2924 unix_stream_read_generic+0x833/0x1fd0 net/unix/af_unix.c:2843 unix_stream_recvmsg+0x187/0x1b0 net/unix/af_unix.c:2961 sock_recvmsg_nosec net/socket.c:995 [inline] sock_recvmsg net/socket.c:1013 [inline] sock_recvmsg net/socket.c:1009 [inline] __sys_recvfrom+0x233/0x390 net/socket.c:2169 __do_sys_recvfrom net/socket.c:2187 [inline] __se_sys_recvfrom net/socket.c:2183 [inline] __x64_sys_recvfrom+0xdd/0x1b0 net/socket.c:2183 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4e9b08a5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4e9c161168 EFLAGS: 00000246 ORIG_RAX: 000000000000002d RAX: ffffffffffffffda RBX: 00007f4e9b1ac050 RCX: 00007f4e9b08a5a9 RDX: 00000000ffffffe8 RSI: 0000000020000100 RDI: 0000000000000004 RBP: 00007f4e9b0e5580 R08: 0000000000000000 R09: ffffffffffffff49 R10: 0000000040010500 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd9586c5cf R14: 00007f4e9c161300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:PagePoisoned include/linux/page-flags.h:304 [inline] RIP: 0010:PageHead include/linux/page-flags.h:787 [inline] RIP: 0010:PageHeadHuge+0x1d/0x200 mm/hugetlb.c:1892 Code: ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 54 55 48 89 fd 53 e8 64 af b9 ff 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 a2 01 00 00 48 8b 5d 00 48 c7 c7 ff ff ff ff 48 RSP: 0018:ffffc9000344f360 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffc9000344f548 RCX: ffffc90005252000 RDX: 03ffff24000d13d0 RSI: ffffffff81c2e49c RDI: 1ffff92000689e81 RBP: 1ffff92000689e81 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffc9000344f558 R13: 1ffff92000689e81 R14: 1ffff92000689e81 R15: 000000000000026a FS: 00007f4e9c161700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2ad1124000 CR3: 000000008934d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ff 66 66 jmpq *0x66(%rsi) 3: 2e 0f 1f 84 00 00 00 nopl %cs:0x0(%rax,%rax,1) a: 00 00 c: 90 nop d: 41 54 push %r12 f: 55 push %rbp 10: 48 89 fd mov %rdi,%rbp 13: 53 push %rbx 14: e8 64 af b9 ff callq 0xffb9af7d 19: 48 89 ea mov %rbp,%rdx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 a2 01 00 00 jne 0x1d6 34: 48 8b 5d 00 mov 0x0(%rbp),%rbx 38: 48 c7 c7 ff ff ff ff mov $0xffffffffffffffff,%rdi 3f: 48 rex.W