kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8112 Comm: syz-executor396 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:hfs_find_init+0x70/0x230 fs/hfs/bfind.c:21
Code: c1 ea 03 80 3c 02 00 0f 85 bc 01 00 00 4c 8d 6b 40 48 c7 45 18 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 6b 01 00 00 8b 43 40 be c0 00
RSP: 0018:ffff8880971e7530 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81fe0980
RDX: 0000000000000008 RSI: ffffffff81fd1c41 RDI: ffff8880971e75b0
RBP: ffff8880971e7598 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000074071 R12: ffff8880ab31a340
R13: 0000000000000040 R14: ffff888094d37772 R15: ffff8880971e7598
FS: 0000555556eef300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffc2a46000 CR3: 00000000a44fc000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hfs_ext_read_extent+0x191/0xa20 fs/hfs/extent.c:200
hfs_get_block+0x53d/0x7e0 fs/hfs/extent.c:366
block_read_full_page+0x288/0xd10 fs/buffer.c:2259
do_read_cache_page+0x533/0x1170 mm/filemap.c:2828
read_mapping_page include/linux/pagemap.h:402 [inline]
hfs_btree_open+0x6ae/0x1430 fs/hfs/btree.c:78
hfs_mdb_get+0x1402/0x1cf0 fs/hfs/mdb.c:193
hfs_fill_super+0xd6a/0x1310 fs/hfs/super.c:413
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2492 [inline]
do_mount+0x115c/0x2f50 fs/namespace.c:2822
ksys_mount+0xcf/0x130 fs/namespace.c:3038
__do_sys_mount fs/namespace.c:3052 [inline]
__se_sys_mount fs/namespace.c:3049 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3049
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f40c8337afa
Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffc2a45918 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f40c8337afa
RDX: 0000000020000240 RSI: 0000000020000000 RDI: 00007fffc2a45930
RBP: 00007fffc2a45930 R08: 00007fffc2a45970 R09: 0000000000000248
R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004
R13: 0000555556eef2c0 R14: 0000000000000000 R15: 00007fffc2a45970
Modules linked in:
---[ end trace 87cc7595134734a3 ]---
RIP: 0010:hfs_find_init+0x70/0x230 fs/hfs/bfind.c:21
Code: c1 ea 03 80 3c 02 00 0f 85 bc 01 00 00 4c 8d 6b 40 48 c7 45 18 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 6b 01 00 00 8b 43 40 be c0 00
RSP: 0018:ffff8880971e7530 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81fe0980
RDX: 0000000000000008 RSI: ffffffff81fd1c41 RDI: ffff8880971e75b0
RBP: ffff8880971e7598 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000074071 R12: ffff8880ab31a340
R13: 0000000000000040 R14: ffff888094d37772 R15: ffff8880971e7598
FS: 0000555556eef300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055667a475500 CR3: 00000000a44fc000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: c1 ea 03 shr $0x3,%edx
3: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
7: 0f 85 bc 01 00 00 jne 0x1c9
d: 4c 8d 6b 40 lea 0x40(%rbx),%r13
11: 48 c7 45 18 00 00 00 movq $0x0,0x18(%rbp)
18: 00
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 4c 89 ea mov %r13,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e 6b 01 00 00 jle 0x1a5
3a: 8b 43 40 mov 0x40(%rbx),%eax
3d: be .byte 0xbe
3e: c0 .byte 0xc0