loop0: detected capacity change from 0 to 128 oldfs: cannot read superblock ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 6726 at fs/buffer.c:1241 __brelse fs/buffer.c:1241 [inline] WARNING: CPU: 1 PID: 6726 at fs/buffer.c:1241 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 6726 at fs/buffer.c:1241 __invalidate_bh_lrus fs/buffer.c:1510 [inline] WARNING: CPU: 1 PID: 6726 at fs/buffer.c:1241 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1523 Modules linked in: CPU: 1 PID: 6726 Comm: syz-executor.0 Not tainted 6.10.0-rc6-syzkaller-00076-g8a03d70c27fc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __brelse fs/buffer.c:1241 [inline] pc : brelse include/linux/buffer_head.h:325 [inline] pc : __invalidate_bh_lrus fs/buffer.c:1510 [inline] pc : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1523 lr : __brelse fs/buffer.c:1241 [inline] lr : brelse include/linux/buffer_head.h:325 [inline] lr : __invalidate_bh_lrus fs/buffer.c:1510 [inline] lr : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1523 sp : ffff8000a1447930 x29: ffff8000a1447930 x28: ffff800080c49610 x27: ffff80008f1ad568 x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b3d833a0 x23: 0000000000000000 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000dbaba888 x19: ffff80008b2cd980 x18: 0000000000000008 x17: 0000000000000000 x16: ffff800082fcbd70 x15: 0000000000000001 x14: 1fffe000367ae64a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000004 x10: 0000000000ff0100 x9 : af4c90ec069c3900 x8 : af4c90ec069c3900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a1447078 x4 : ffff80008f295200 x3 : ffff8000805ef510 x2 : 0000000000000001 x1 : 0000000100000002 x0 : 0000000000000000 Call trace: __brelse fs/buffer.c:1241 [inline] brelse include/linux/buffer_head.h:325 [inline] __invalidate_bh_lrus fs/buffer.c:1510 [inline] invalidate_bh_lru+0x128/0x200 fs/buffer.c:1523 csd_do_func kernel/smp.c:133 [inline] smp_call_function_many_cond+0x141c/0x2f30 kernel/smp.c:846 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1023 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1542 kill_bdev block/bdev.c:89 [inline] blkdev_flush_mapping+0xf0/0x230 block/bdev.c:664 blkdev_put_whole block/bdev.c:671 [inline] bdev_release+0x4bc/0x644 block/bdev.c:1096 blkdev_release+0x20/0x34 block/fops.c:623 __fput+0x334/0x760 fs/file_table.c:422 ____fput+0x20/0x30 fs/file_table.c:450 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 1336 hardirqs last enabled at (1335): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (1335): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (1336): [] smp_call_function_many_cond+0x1340/0x2f30 kernel/smp.c:845 softirqs last enabled at (736): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (734): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---