------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 5827 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline] WARNING: CPU: 1 PID: 5827 at fs/buffer.c:1229 __brelse+0x6d/0xb0 fs/buffer.c:1223 Modules linked in: CPU: 1 UID: 0 PID: 5827 Comm: syz-executor153 Not tainted 6.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__brelse fs/buffer.c:1229 [inline] RIP: 0010:__brelse+0x6d/0xb0 fs/buffer.c:1223 Code: 84 d2 75 52 44 8b 63 60 31 ff 44 89 e6 e8 4b 70 79 ff 45 85 e4 75 20 e8 01 6e 79 ff 90 48 c7 c7 e0 04 7f 8b e8 64 b8 39 ff 90 <0f> 0b 90 90 5b 5d 41 5c e9 e6 6d 79 ff e8 e1 6d 79 ff be 04 00 00 RSP: 0018:ffffc90004d2faf8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff888072406cb0 RCX: ffffffff815a5159 RDX: ffff888030558000 RSI: ffffffff815a5166 RDI: 0000000000000001 RBP: ffff888072406d10 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888072406cb0 R14: dffffc0000000000 R15: ffff8880b873ff80 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff828cbc095 CR3: 000000007c726000 CR4: 0000000000350ef0 Call Trace: brelse include/linux/buffer_head.h:324 [inline] __invalidate_bh_lrus fs/buffer.c:1498 [inline] invalidate_bh_lru+0xa2/0x190 fs/buffer.c:1511 csd_do_func kernel/smp.c:134 [inline] smp_call_function_many_cond+0xf2d/0x1300 kernel/smp.c:875 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1051 kill_bdev block/bdev.c:90 [inline] blkdev_flush_mapping+0xf1/0x290 block/bdev.c:671 blkdev_put_whole+0xc4/0xf0 block/bdev.c:678 bdev_release+0x47e/0x6d0 block/bdev.c:1103 blkdev_release+0x15/0x20 block/fops.c:635 __fput+0x3fb/0xb60 fs/file_table.c:450 task_work_run+0x151/0x250 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xadd/0x2d70 kernel/exit.c:938 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096 x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f02f13d2139 Code: Unable to access opcode bytes at 0x7f02f13d210f. RSP: 002b:00007ffcdc87a7a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f02f13d2139 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007f02f14563b0 R08: ffffffffffffffb0 R09: 00007f02f1380000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f02f14563b0 R13: 0000000000000000 R14: 00007f02f14592e0 R15: 00007f02f13954f0