------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 3567 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 3567 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 3567 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 3567 at fs/buffer.c:1148 invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 3567 Comm: syz-executor Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__brelse fs/buffer.c:1148 [inline] RIP: 0010:brelse include/linux/buffer_head.h:325 [inline] RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1394 [inline] RIP: 0010:invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1407 Code: 00 e8 cc 60 e4 ff f0 ff 0b eb 21 e8 02 95 9a ff 41 80 3c 2e 00 75 26 eb 2c e8 f4 94 9a ff 48 c7 c7 a0 6b 97 8a e8 c8 3e 66 ff <0f> 0b 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2e 00 74 08 4c 89 ff RSP: 0018:ffffc90000007f60 EFLAGS: 00010046 RAX: ae5a1631681b6700 RBX: ffff888064082ee0 RCX: ffff88807dc7bb80 RDX: 0000000000010000 RSI: 0000000080010001 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81668a3c R09: fffff52000000f2d R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9036538 R13: 0000000000000018 R14: 1ffff11017206caa R15: ffff8880b9036550 FS: 0000555589822500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055785bba1668 CR3: 00000000649c2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: flush_smp_call_function_queue+0x2b5/0x760 kernel/smp.c:628 __sysvec_call_function_single+0x9a/0x250 arch/x86/kernel/smp.c:248 sysvec_call_function_single+0x89/0xb0 arch/x86/kernel/smp.c:243 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:646 RIP: 0010:debug_object_free+0x0/0x460 lib/debugobjects.c:827 Code: 80 e1 07 80 c1 03 38 c1 0f 8c 30 fe ff ff 48 89 ef e8 b4 0f bc fd e9 23 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 20 80 3d 5b 7f db 09 00 74 RSP: 0018:ffffc90002557d38 EFLAGS: 00000293 RAX: ffffffff816f7aee RBX: 0000000000000000 RCX: ffff88807dc7bb80 RDX: 0000000000000000 RSI: ffffffff8a8cbd20 RDI: ffffc90002557d80 RBP: ffffc90002557e50 R08: ffffffff816f79bb R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffff920004aafac R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff920004aafb3 destroy_hrtimer_on_stack kernel/time/hrtimer.c:452 [inline] hrtimer_nanosleep+0x3ab/0x490 kernel/time/hrtimer.c:2115 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1313 [inline] __se_sys_clock_nanosleep+0x323/0x3b0 kernel/time/posix-timers.c:1290 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f29c50bc0e5 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 c6 57 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 1f 58 ff ff 48 8b 04 24 48 83 c4 28 f7 d8 RSP: 002b:00007ffec91c0700 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00000000000000e7 RCX: 00007f29c50bc0e5 RDX: 00007ffec91c0740 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffec91c079c R08: 0000000000000000 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 000000000001d7f1 R14: 000000000001d79d R15: 00007ffec91c07f0 ---------------- Code disassembly (best guess): 0: 80 e1 07 and $0x7,%cl 3: 80 c1 03 add $0x3,%cl 6: 38 c1 cmp %al,%cl 8: 0f 8c 30 fe ff ff jl 0xfffffe3e e: 48 89 ef mov %rbp,%rdi 11: e8 b4 0f bc fd call 0xfdbc0fca 16: e9 23 fe ff ff jmp 0xfffffe3e 1b: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 22: 00 00 00 25: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) * 2a: 55 push %rbp <-- trapping instruction 2b: 41 57 push %r15 2d: 41 56 push %r14 2f: 41 55 push %r13 31: 41 54 push %r12 33: 53 push %rbx 34: 48 83 ec 20 sub $0x20,%rsp 38: 80 3d 5b 7f db 09 00 cmpb $0x0,0x9db7f5b(%rip) # 0x9db7f9a 3f: 74 .byte 0x74