ioctx_table 0000000000000000 owner ffff888092f7a5c0 exe_file ffff8880a87f5a00 ------------[ cut here ]------------ kernel BUG at mm/khugepaged.c:469! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 14500 Comm: syz-executor.5 Not tainted 5.8.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__khugepaged_enter+0x306/0x3d0 mm/khugepaged.c:469 Code: e4 49 81 fe 40 af c9 89 74 2a e8 45 79 bb ff 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 32 79 bb ff 48 89 ef e8 1a d6 e9 ff <0f> 0b 41 bc f4 ff ff ff eb d6 e8 1b 79 bb ff 31 c9 ba 01 00 00 00 RSP: 0018:ffffc900095178d0 EFLAGS: 00010282 RAX: 000000000000036a RBX: 0000000000000005 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815dbc57 RDI: fffff520012a2eb9 RBP: ffff88808faa7680 R08: 000000000000036a R09: ffff8880ae6318e7 R10: 0000000000000000 R11: 000000000004dea8 R12: ffff8880a72ebdc0 R13: ffff88808faa76dc R14: 0000000020000000 R15: ffffc90009517a08 FS: 00007f53b738d700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055730cb8c280 CR3: 000000008f63b000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: khugepaged_enter include/linux/khugepaged.h:62 [inline] do_huge_pmd_anonymous_page+0xaa1/0x2230 mm/huge_memory.c:706 create_huge_pmd mm/memory.c:4108 [inline] __handle_mm_fault mm/memory.c:4329 [inline] handle_mm_fault+0x369d/0x4590 mm/memory.c:4456 do_user_addr_fault+0x598/0xbf0 arch/x86/mm/fault.c:1294 handle_page_fault arch/x86/mm/fault.c:1351 [inline] exc_page_fault+0xa8/0x160 arch/x86/mm/fault.c:1404 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x30 arch/x86/lib/copy_user_64.S:205 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 f3 a4 RSP: 0018:ffffc90009517c10 EFLAGS: 00010206 RAX: 0000000000000001 RBX: 0000000020000000 RCX: 0000000000000290 RDX: 0000000000000290 RSI: 0000000020000000 RDI: ffff888045783000 RBP: 0000000000000290 R08: 0000000000000001 R09: ffff88804578328f R10: ffffed1008af0651 R11: 0000000000000000 R12: ffff888045783000 R13: 0000000020000290 R14: 00007ffffffff000 R15: 0000000000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:68 [inline] _copy_from_user+0x11c/0x190 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:160 [inline] copy_from_sockptr_offset include/linux/sockptr.h:48 [inline] copy_from_sockptr include/linux/sockptr.h:55 [inline] memdup_sockptr include/linux/sockptr.h:73 [inline] ip_set_mcast_msfilter net/ipv4/ip_sockglue.c:779 [inline] do_ip_setsockopt net/ipv4/ip_sockglue.c:1316 [inline] ip_setsockopt+0x2d31/0x39d0 net/ipv4/ip_sockglue.c:1424 udp_setsockopt+0x76/0xc0 net/ipv4/udp.c:2711 __sys_setsockopt+0x2db/0x610 net/socket.c:2132 __do_sys_setsockopt net/socket.c:2143 [inline] __se_sys_setsockopt net/socket.c:2140 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2140 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d239 Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f53b738cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000002ed40 RCX: 000000000045d239 RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000118cf90 R08: 0000000000000290 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 000000000169fb6f R14: 00007f53b738d9c0 R15: 000000000118cf4c Modules linked in: ---[ end trace c86d1bae1f003620 ]--- RIP: 0010:__khugepaged_enter+0x306/0x3d0 mm/khugepaged.c:469 Code: e4 49 81 fe 40 af c9 89 74 2a e8 45 79 bb ff 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 32 79 bb ff 48 89 ef e8 1a d6 e9 ff <0f> 0b 41 bc f4 ff ff ff eb d6 e8 1b 79 bb ff 31 c9 ba 01 00 00 00 RSP: 0018:ffffc900095178d0 EFLAGS: 00010282 RAX: 000000000000036a RBX: 0000000000000005 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815dbc57 RDI: fffff520012a2eb9 RBP: ffff88808faa7680 R08: 000000000000036a R09: ffff8880ae6318e7 R10: 0000000000000000 R11: 000000000004dea8 R12: ffff8880a72ebdc0 R13: ffff88808faa76dc R14: 0000000020000000 R15: ffffc90009517a08 FS: 00007f53b738d700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055730cb8c280 CR3: 000000008f63b000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400