general protection fault, probably for non-canonical address 0x1ffffffff1215a85: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8813 Comm: syz-fuzzer Not tainted 5.6.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:do_syscall_64+0x5f/0x1b0 arch/x86/entry/common.c:289 Code: 48 c7 c7 28 d4 0a 89 e8 6f 69 b0 00 48 83 3d af 5b 0a 08 00 0f 84 58 01 00 00 fb 66 0f 1f 44 00 00 65 48 8b 1c 25 c0 1d 02 00 <48> 00 00 00 00 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3b 69 b0 00 RSP: 0018:ffffc90002077f28 EFLAGS: 00010282 RAX: 1ffffffff1215a85 RBX: ffff88808ebb4240 RCX: ffff88808ebb4240 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88808ebb4a84 RBP: 0000000000000000 R08: ffffffff817a3210 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: dffffc0000000000 R14: ffffc90002077f58 R15: 0000000000000000 FS: 000000c000084090(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc53476728 CR3: 00000000a38af000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4afb40 Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 RSP: 002b:000000c011627450 EFLAGS: 00000206 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004afb40 RDX: 00000000000000f0 RSI: 000000c00000a3e0 RDI: 0000000000000003 RBP: 000000c0116274a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000011e R13: 000000c000328000 R14: 000000000000007f R15: fffffffffffeacba Modules linked in: ---[ end trace 64abf91c75c21d71 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:do_syscall_64+0x5f/0x1b0 arch/x86/entry/common.c:289 Code: 48 c7 c7 28 d4 0a 89 e8 6f 69 b0 00 48 83 3d af 5b 0a 08 00 0f 84 58 01 00 00 fb 66 0f 1f 44 00 00 65 48 8b 1c 25 c0 1d 02 00 <48> 00 00 00 00 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3b 69 b0 00 RSP: 0018:ffffc90002077f28 EFLAGS: 00010282 RAX: 1ffffffff1215a85 RBX: ffff88808ebb4240 RCX: ffff88808ebb4240 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88808ebb4a84 RBP: 0000000000000000 R08: ffffffff817a3210 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: dffffc0000000000 R14: ffffc90002077f58 R15: 0000000000000000 FS: 000000c000084090(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc53476728 CR3: 00000000a38af000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600