------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 24405 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 1 PID: 24405 at fs/buffer.c:1145 brelse+0x78/0xa0 include/linux/buffer_head.h:326
Modules linked in:
CPU: 1 PID: 24405 Comm: syz-executor.1 Not tainted 6.1.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__brelse fs/buffer.c:1145 [inline]
RIP: 0010:brelse+0x78/0xa0 include/linux/buffer_head.h:326
Code: df be 04 00 00 00 e8 37 3e e0 ff f0 ff 0b eb 1c e8 bd 43 8b ff eb 15 e8 b6 43 8b ff 48 c7 c7 c0 b5 1d 8b 31 c0 e8 78 45 52 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c af 48 89 df e8 3f
RSP: 0018:ffffc900001e0f18 EFLAGS: 00010046
RAX: 58d76a0fb740bd00 RBX: ffff88808d6db7a0 RCX: ffff88808b0e3a80
RDX: 0000000080010002 RSI: 0000000080010002 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816fdb7d R09: ffffed1017324f1b
R10: ffffed1017324f1b R11: 1ffff11017324f1a R12: ffff8880b9935d78
R13: 1ffff11017328022 R14: ffff8880b9935d38 R15: dffffc0000000000
FS: 00007f730161e700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f730161f000 CR3: 0000000079e91000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__invalidate_bh_lrus+0x206/0x3c0 fs/buffer.c:1380
invalidate_bh_lru+0x66/0xb0 fs/buffer.c:1393
__flush_smp_call_function_queue+0x2cc/0xcd0 kernel/smp.c:630
__sysvec_call_function_single+0x62/0x70 arch/x86/kernel/smp.c:248
sysvec_call_function_single+0x8c/0xb0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:657
RIP: 0010:console_emit_next_record+0x8b6/0xa60 kernel/printk/printk.c:2740
Code: 20 80 1c 00 48 8b 44 24 48 42 80 3c 20 00 44 8a 6c 24 17 4c 8b 74 24 28 48 8b 5c 24 38 74 08 4c 89 f7 e8 bd 78 71 00 49 ff 06 <48> c7 84 24 80 00 00 00 0e 36 e0 45 49 c7 04 1c 00 00 00 00 49 c7
RSP: 0018:ffffc900156cf160 EFLAGS: 00000287
RAX: ffffffff81701408 RBX: 1ffff92002ad9e3c RCX: 0000000000040000
RDX: ffffc9000a5b9000 RSI: 00000000000049cb RDI: 00000000000049cc
RBP: ffffc900156cf390 R08: ffffffff817013df R09: fffffbfff20e8629
R10: fffffbfff20e8629 R11: 1ffffffff20e8628 R12: dffffc0000000000
R13: 0000000000000201 R14: 0000000000000046 R15: 0000000000000200
console_unlock+0x27c/0x6f0 kernel/printk/printk.c:2860
vprintk_emit+0xd1/0x1e0 kernel/printk/printk.c:2268
_printk+0xcf/0x10f kernel/printk/printk.c:2289
_udf_err+0x14d/0x1a0 fs/udf/super.c:2329
udf_read_tagged+0x4c2/0xaf0 fs/udf/misc.c:221
udf_check_anchor_block+0x1ef/0x6c0 fs/udf/super.c:1845
udf_scan_anchors+0x159/0x680 fs/udf/super.c:1885
udf_find_anchor fs/udf/super.c:1941 [inline]
udf_load_vrs+0x1f8/0x780 fs/udf/super.c:2006
udf_fill_super+0x90c/0x1b20 fs/udf/super.c:2184
mount_bdev+0x26c/0x3a0 fs/super.c:1401
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x88/0x270 fs/super.c:1531
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f730088d6ba
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f730161df88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000004e5 RCX: 00007f730088d6ba
RDX: 0000000020000500 RSI: 0000000020000540 RDI: 00007f730161dfe0
RBP: 00007f730161e020 R08: 00007f730161e020 R09: 0000000020000500
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000500
R13: 0000000020000540 R14: 00007f730161dfe0 R15: 0000000020000380
----------------
Code disassembly (best guess):
0: 20 80 1c 00 48 8b and %al,-0x74b7ffe4(%rax)
6: 44 24 48 rex.R and $0x48,%al
9: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
e: 44 8a 6c 24 17 mov 0x17(%rsp),%r13b
13: 4c 8b 74 24 28 mov 0x28(%rsp),%r14
18: 48 8b 5c 24 38 mov 0x38(%rsp),%rbx
1d: 74 08 je 0x27
1f: 4c 89 f7 mov %r14,%rdi
22: e8 bd 78 71 00 callq 0x7178e4
27: 49 ff 06 incq (%r14)
* 2a: 48 c7 84 24 80 00 00 movq $0x45e0360e,0x80(%rsp) <-- trapping instruction
31: 00 0e 36 e0 45
36: 49 c7 04 1c 00 00 00 movq $0x0,(%r12,%rbx,1)
3d: 00
3e: 49 rex.WB
3f: c7 .byte 0xc7