------------[ cut here ]------------ kernel BUG at fs/hfsplus/bnode.c:618! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 8416 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00113-g2668e3ae2ef3 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:hfsplus_bnode_put.part.0+0x3ac/0x440 fs/hfsplus/bnode.c:618 Code: b6 04 02 84 c0 74 09 3c 03 7f 05 e8 ee 1c 7f ff 41 8b 54 24 38 31 f6 48 89 ef e8 8f e0 ff ff e9 a2 fe ff ff e8 85 a0 22 ff 90 <0f> 0b 48 8b 7c 24 08 e8 c8 1c 7f ff e9 32 fd ff ff 48 89 df e8 bb RSP: 0018:ffffc90007d6f148 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88801cf98680 RCX: ffffc9000c061000 RDX: 0000000000040000 RSI: ffffffff826bb50b RDI: 0000000000000005 RBP: ffff88801cf98600 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000008 R12: ffff888054b9e000 R13: 0000000000000000 R14: 1ffff92000fade3c R15: ffff888054b9e0e0 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e70b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020031000 CR3: 0000000060ebe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hfsplus_bnode_put fs/hfsplus/bnode.c:549 [inline] hfsplus_bnode_find+0x370/0xcb0 fs/hfsplus/bnode.c:548 hfsplus_bmap_alloc+0x10e/0x830 fs/hfsplus/btree.c:390 hfs_btree_inc_height.isra.0+0x100/0x8c0 fs/hfsplus/brec.c:475 hfsplus_brec_insert+0xa02/0xc50 fs/hfsplus/brec.c:75 __hfsplus_ext_write_extent+0x4a0/0x5e0 fs/hfsplus/extents.c:107 __hfsplus_ext_cache_extent+0x98/0x9d0 fs/hfsplus/extents.c:186 hfsplus_ext_read_extent+0x200/0x250 fs/hfsplus/extents.c:218 hfsplus_file_extend+0x66a/0xfe0 fs/hfsplus/extents.c:461 hfsplus_get_block+0x1ae/0x9e0 fs/hfsplus/extents.c:245 __block_write_begin_int+0x4fb/0x16e0 fs/buffer.c:2105 __block_write_begin fs/buffer.c:2154 [inline] block_write_begin+0xb1/0x4a0 fs/buffer.c:2213 cont_write_begin+0x53d/0x740 fs/buffer.c:2567 hfsplus_write_begin+0x87/0x150 fs/hfsplus/inode.c:47 generic_perform_write+0x272/0x620 mm/filemap.c:3974 __generic_file_write_iter+0x1fd/0x240 mm/filemap.c:4069 generic_file_write_iter+0xe7/0x350 mm/filemap.c:4095 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6db/0x1100 fs/read_write.c:590 ksys_write+0x12f/0x260 fs/read_write.c:643 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:321 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf727e579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5e705ac EFLAGS: 00000292 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000080 RDX: 000000001ffffce1 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfsplus_bnode_put.part.0+0x3ac/0x440 fs/hfsplus/bnode.c:618 Code: b6 04 02 84 c0 74 09 3c 03 7f 05 e8 ee 1c 7f ff 41 8b 54 24 38 31 f6 48 89 ef e8 8f e0 ff ff e9 a2 fe ff ff e8 85 a0 22 ff 90 <0f> 0b 48 8b 7c 24 08 e8 c8 1c 7f ff e9 32 fd ff ff 48 89 df e8 bb RSP: 0018:ffffc90007d6f148 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88801cf98680 RCX: ffffc9000c061000 RDX: 0000000000040000 RSI: ffffffff826bb50b RDI: 0000000000000005 RBP: ffff88801cf98600 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000008 R12: ffff888054b9e000 R13: 0000000000000000 R14: 1ffff92000fade3c R15: ffff888054b9e0e0 FS: 0000000000000000(0000) GS:ffff88802c400000(0063) knlGS:00000000f5e70b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000056c92f4c CR3: 0000000060ebe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi