------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 0 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline] WARNING: CPU: 0 PID: 0 at fs/buffer.c:1235 brelse include/linux/buffer_head.h:324 [inline] WARNING: CPU: 0 PID: 0 at fs/buffer.c:1235 __invalidate_bh_lrus fs/buffer.c:1504 [inline] WARNING: CPU: 0 PID: 0 at fs/buffer.c:1235 invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1517 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc3-next-20241016-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__brelse fs/buffer.c:1235 [inline] RIP: 0010:brelse include/linux/buffer_head.h:324 [inline] RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1504 [inline] RIP: 0010:invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1517 Code: b4 03 db ff f0 ff 0b eb 25 e8 6a 22 71 ff 41 80 3c 2e 00 75 2a eb 30 e8 5c 22 71 ff 90 48 c7 c7 a0 9e 19 8c e8 1f 15 32 ff 90 <0f> 0b 90 90 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2e 00 74 08 4c RSP: 0018:ffffc90000007f30 EFLAGS: 00010046 RAX: b355a416f85e0500 RBX: ffff88806f34b318 RCX: ffffffff8e6945c0 RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff8155d7b2 R09: fffffbfff1cfa3e0 R10: dffffc0000000000 R11: fffffbfff1cfa3e0 R12: ffff8880b8639568 R13: 0000000000000000 R14: 1ffff110170c72ad R15: ffff8880b8639568 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdf891fdc8 CR3: 000000007d0d4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_do_func kernel/smp.c:134 [inline] __flush_smp_call_function_queue+0x3fc/0x1690 kernel/smp.c:540 __sysvec_call_function_single+0xb8/0x430 arch/x86/kernel/smp.c:271 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline] sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112 Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d4 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 35 81 9e 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffffff8e607ca8 EFLAGS: 00000246 RAX: ffffffff8e6945c0 RBX: ffff8880206e5064 RCX: 0000000000015e99 RDX: 0000000000000001 RSI: ffff8880206e5000 RDI: ffff8880206e5064 RBP: 000000000003a5b8 R08: ffff8880b8637a7b R09: 1ffff110170c6f4f R10: dffffc0000000000 R11: ffffffff8bcc6540 R12: ffff888145e8e000 R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f1343a0 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702 cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:264 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:230 [inline] do_idle+0x375/0x5d0 kernel/sched/idle.c:326 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424 rest_init+0x2dc/0x300 init/main.c:747 start_kernel+0x47f/0x500 init/main.c:1102 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 65 48 8b 04 25 00 d4 mov %gs:0x3d400,%rax 10: 03 00 12: 48 f7 00 08 00 00 00 testq $0x8,(%rax) 19: 75 10 jne 0x2b 1b: 66 90 xchg %ax,%ax 1d: 0f 00 2d 35 81 9e 00 verw 0x9e8135(%rip) # 0x9e8159 24: f3 0f 1e fa endbr64 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: c3 ret 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 37: 00 00 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop