Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:hfsplus_create_attributes_file fs/hfsplus/xattr.c:320 [inline] RIP: 0010:__hfsplus_setxattr+0x1c68/0x2860 fs/hfsplus/xattr.c:432 Code: 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 b6 16 82 ff 4d 8b 36 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 99 16 82 ff 4d 8b 36 49 8d 7e 90 RSP: 0018:ffffc9000cb07420 EFLAGS: 00010202 RAX: 0000000000000001 RBX: fffff52001960ea4 RCX: ffff8880376aca00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000cb078f8 R08: ffffea00013fecf7 R09: 1ffffd400027fd9e R10: dffffc0000000000 R11: fffff9400027fd9f R12: dffffc0000000000 R13: ffff888012fea228 R14: 0000000000000008 R15: ffff888012fea838 FS: 00007fd229ef16c0(0000) GS:ffff88808c820000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e8c950000 CR3: 000000003395a000 CR4: 0000000000352ef0 Call Trace: hfsplus_setxattr+0x124/0x340 fs/hfsplus/xattr.c:555 hfsplus_trusted_setxattr+0x40/0x60 fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x43c/0x480 fs/xattr.c:218 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:252 vfs_setxattr+0x163/0x360 fs/xattr.c:339 do_setxattr fs/xattr.c:654 [inline] filename_setxattr+0x296/0x630 fs/xattr.c:682 path_setxattrat+0x3eb/0x440 fs/xattr.c:726 __do_sys_setxattr fs/xattr.c:760 [inline] __se_sys_setxattr fs/xattr.c:756 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:756 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd228f9c819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd229ef0fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007fd229216090 RCX: 00007fd228f9c819 RDX: 0000000000000000 RSI: 0000200000000340 RDI: 0000200000000240 RBP: 00007fd229032c91 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd229216128 R14: 00007fd229216090 R15: 00007ffe6ea41e08 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfsplus_create_attributes_file fs/hfsplus/xattr.c:320 [inline] RIP: 0010:__hfsplus_setxattr+0x1c68/0x2860 fs/hfsplus/xattr.c:432 Code: 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 b6 16 82 ff 4d 8b 36 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 99 16 82 ff 4d 8b 36 49 8d 7e 90 RSP: 0018:ffffc9000cb07420 EFLAGS: 00010202 RAX: 0000000000000001 RBX: fffff52001960ea4 RCX: ffff8880376aca00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000cb078f8 R08: ffffea00013fecf7 R09: 1ffffd400027fd9e R10: dffffc0000000000 R11: fffff9400027fd9f R12: dffffc0000000000 R13: ffff888012fea228 R14: 0000000000000008 R15: ffff888012fea838 FS: 00007fd229ef16c0(0000) GS:ffff88808c820000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e8c950000 CR3: 000000003395a000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 8b 36 mov (%rsi),%esi 2: 49 83 c6 30 add $0x30,%r14 6: 4c 89 f0 mov %r14,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 12: 74 08 je 0x1c 14: 4c 89 f7 mov %r14,%rdi 17: e8 b6 16 82 ff call 0xff8216d2 1c: 4d 8b 36 mov (%r14),%r14 1f: 49 83 c6 08 add $0x8,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 99 16 82 ff call 0xff8216d2 39: 4d 8b 36 mov (%r14),%r14 3c: 49 8d 7e 90 lea -0x70(%r14),%rdi