------------[ cut here ]------------ kernel BUG at include/linux/swapops.h:197! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 19938 Comm: syz-executor.2 Not tainted 5.8.0-rc5-next-20200716-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:migration_entry_to_page include/linux/swapops.h:197 [inline] RIP: 0010:migration_entry_to_page include/linux/swapops.h:190 [inline] RIP: 0010:pmd_migration_entry_wait+0x493/0x520 mm/migrate.c:368 Code: 4d 8d 66 ff e9 1f fe ff ff e8 b9 c4 be ff 49 8d 5f ff e9 58 fe ff ff e8 ab c4 be ff 4d 8d 66 ff e9 a9 fe ff ff e8 9d c4 be ff <0f> 0b e8 96 c4 be ff 0f 0b e8 8f c4 be ff 4c 8d 65 ff eb a7 48 89 RSP: 0018:ffffc9001095fb70 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81b56a24 RDX: ffff888092022240 RSI: ffffffff81b56b43 RDI: 0000000000000001 RBP: ffffea0008468080 R08: 0000000000000000 R09: ffffea0008468087 R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0008468080 R13: ffff888015d2e0c0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f55eb477700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 000000021ad87000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __handle_mm_fault mm/memory.c:4349 [inline] handle_mm_fault+0x23cf/0x45e0 mm/memory.c:4465 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+0xab/0x170 arch/x86/mm/fault.c:1404 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:544 RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:91 Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a RSP: 0018:ffffc9001095fe48 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000020000080 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffc9001095fea8 RDI: 0000000020000080 RBP: ffffc9001095fea8 R08: 0000000400000003 R09: ffffc9001095feaf R10: fffff5200212bfd5 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000020000088 R14: 00007ffffffff000 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:74 [inline] _copy_to_user+0x11e/0x160 lib/usercopy.c:30 copy_to_user include/linux/uaccess.h:168 [inline] do_pipe2+0x128/0x1b0 fs/pipe.c:1014 __do_sys_pipe fs/pipe.c:1035 [inline] __se_sys_pipe fs/pipe.c:1033 [inline] __x64_sys_pipe+0x2f/0x40 fs/pipe.c:1033 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c1d9 Code: Bad RIP value. RSP: 002b:00007f55eb476c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000016 RAX: ffffffffffffffda RBX: 0000000000022ac0 RCX: 000000000045c1d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000078c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078c04c R13: 00007ffcfc120ecf R14: 00007f55eb4779c0 R15: 000000000078c04c Modules linked in: ---[ end trace ea73d933d66ff0d4 ]--- RIP: 0010:migration_entry_to_page include/linux/swapops.h:197 [inline] RIP: 0010:migration_entry_to_page include/linux/swapops.h:190 [inline] RIP: 0010:pmd_migration_entry_wait+0x493/0x520 mm/migrate.c:368 Code: 4d 8d 66 ff e9 1f fe ff ff e8 b9 c4 be ff 49 8d 5f ff e9 58 fe ff ff e8 ab c4 be ff 4d 8d 66 ff e9 a9 fe ff ff e8 9d c4 be ff <0f> 0b e8 96 c4 be ff 0f 0b e8 8f c4 be ff 4c 8d 65 ff eb a7 48 89 RSP: 0018:ffffc9001095fb70 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81b56a24 RDX: ffff888092022240 RSI: ffffffff81b56b43 RDI: 0000000000000001 RBP: ffffea0008468080 R08: 0000000000000000 R09: ffffea0008468087 R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0008468080 R13: ffff888015d2e0c0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f55eb477700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 000000021ad87000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400