general protection fault, probably for non-canonical address 0xfbd59c0000000040: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xdead000000000200-0xdead000000000207] CPU: 1 PID: 23944 Comm: syz-executor.3 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__block_write_begin_int+0xdf/0x1810 fs/buffer.c:1977 Code: c1 e8 03 42 80 3c 28 00 41 89 ec 0f 85 4e 16 00 00 48 8b 04 24 48 8b 58 18 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 1e 16 00 00 48 8b 03 48 89 44 24 48 48 8b 04 24 RSP: 0018:ffffc9000bfe7408 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: dead000000000200 RCX: ffffc90010087000 RDX: 1bd5a00000000040 RSI: ffffffff81d9c149 RDI: ffffea00023f8058 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff819d817e R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000001000 R15: 0000000000001000 FS: 00007f84e8f5a700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020c22000 CR3: 000000001da2e000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __block_write_begin fs/buffer.c:2060 [inline] block_write_begin+0x58/0x2e0 fs/buffer.c:2120 generic_perform_write+0x202/0x510 mm/filemap.c:3770 __generic_file_write_iter+0x24e/0x640 mm/filemap.c:3897 blkdev_write_iter+0x29c/0x550 block/fops.c:519 call_write_iter include/linux/fs.h:2163 [inline] do_iter_readv_writev+0x472/0x750 fs/read_write.c:729 do_iter_write+0x188/0x710 fs/read_write.c:855 vfs_iter_write+0x70/0xa0 fs/read_write.c:896 iter_file_splice_write+0x723/0xc70 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x110/0x180 fs/splice.c:936 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891 do_splice_direct+0x1b3/0x280 fs/splice.c:979 do_sendfile+0xae9/0x1240 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1314 [inline] __se_sys_sendfile64 fs/read_write.c:1300 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1300 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+0x44/0xae RIP: 0033:0x7f84eb9e3709 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f84e8f5a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f84ebae7f60 RCX: 00007f84eb9e3709 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f84eba3dcb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000080006 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f84ec01bb2f R14: 00007f84e8f5a300 R15: 0000000000022000 Modules linked in: ---[ end trace 7a74aaeb250ce6d7 ]--- RIP: 0010:__block_write_begin_int+0xdf/0x1810 fs/buffer.c:1977 Code: c1 e8 03 42 80 3c 28 00 41 89 ec 0f 85 4e 16 00 00 48 8b 04 24 48 8b 58 18 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 1e 16 00 00 48 8b 03 48 89 44 24 48 48 8b 04 24 RSP: 0018:ffffc9000bfe7408 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: dead000000000200 RCX: ffffc90010087000 RDX: 1bd5a00000000040 RSI: ffffffff81d9c149 RDI: ffffea00023f8058 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff819d817e R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000001000 R15: 0000000000001000 FS: 00007f84e8f5a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555754e708 CR3: 000000001da2e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 8: 41 89 ec mov %ebp,%r12d b: 0f 85 4e 16 00 00 jne 0x165f 11: 48 8b 04 24 mov (%rsp),%rax 15: 48 8b 58 18 mov 0x18(%rax),%rbx 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 da mov %rbx,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 1e 16 00 00 jne 0x1652 34: 48 8b 03 mov (%rbx),%rax 37: 48 89 44 24 48 mov %rax,0x48(%rsp) 3c: 48 8b 04 24 mov (%rsp),%rax