------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 30878 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline] WARNING: CPU: 0 PID: 30878 at fs/buffer.c:1145 brelse+0x78/0xa0 include/linux/buffer_head.h:326 Modules linked in: CPU: 0 PID: 30878 Comm: syz-fuzzer 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 17 89 e0 ff f0 ff 0b eb 1c e8 6d 6f 8c ff eb 15 e8 66 6f 8c ff 48 c7 c7 40 ff fd 8a 31 c0 e8 58 0d 54 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c af 48 89 df e8 1f RSP: 0000:ffffc9000382fe60 EFLAGS: 00010046 RAX: 88ac8b8a7ed22600 RBX: ffff88802fe43400 RCX: ffff888021401d40 RDX: 0000000080010001 RSI: 0000000080010001 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff816e568d R09: ffffed1017304f1b R10: ffffed1017304f1b R11: 1ffff11017304f1a R12: 0000000000000000 R13: 1ffff11017308416 R14: ffff8880b9835d38 R15: dffffc0000000000 FS: 000000c00a7e1890(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe92ef7efc0 CR3: 00000000774cd000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __invalidate_bh_lrus+0x37/0x3c0 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+0x3e/0xb0 arch/x86/kernel/smp.c:243 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:657 RIP: 0033:0x414140 Code: b1 f8 01 00 00 0f 1f 44 00 00 e8 1b 04 00 00 48 8b 6c 24 60 48 83 c4 68 c3 48 8b 6c 24 60 48 83 c4 68 c3 48 83 c7 08 0f 1f 00 <48> 39 f9 0f 86 f1 00 00 00 48 89 7c 24 38 45 0f b6 19 45 0f a3 c3 RSP: 002b:000000c006a2edc8 EFLAGS: 00000206 RAX: 0000000000203001 RBX: 000000c006a2efc8 RCX: 0000000000000028 RDX: 000000c000040800 RSI: 00007f25953fffff RDI: 0000000000000018 RBP: 000000c006a2ee28 R08: 0000000000000003 R09: 00007f25952ba720 R10: 000000c00574e400 R11: 00000000000000f3 R12: 0000000001ac9f00 R13: 000000c000042380 R14: 000000c000091860 R15: 00007f25952ba722