------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 6252 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline] WARNING: CPU: 0 PID: 6252 at fs/buffer.c:1235 brelse include/linux/buffer_head.h:309 [inline] WARNING: CPU: 0 PID: 6252 at fs/buffer.c:1235 __invalidate_bh_lrus fs/buffer.c:1487 [inline] WARNING: CPU: 0 PID: 6252 at fs/buffer.c:1235 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1500 Modules linked in: CPU: 0 PID: 6252 Comm: syz-executor.0 Not tainted 6.9.0-rc3-syzkaller-gb5d2afe8745b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __brelse fs/buffer.c:1235 [inline] pc : brelse include/linux/buffer_head.h:309 [inline] pc : __invalidate_bh_lrus fs/buffer.c:1487 [inline] pc : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1500 lr : __brelse fs/buffer.c:1235 [inline] lr : brelse include/linux/buffer_head.h:309 [inline] lr : __invalidate_bh_lrus fs/buffer.c:1487 [inline] lr : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1500 sp : ffff800080007e10 x29: ffff800080007e10 x28: ffff80008ee7d568 x27: 0000000000000000 x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b3ddcfd0 x23: 0000000000000030 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000ef7d0b40 x19: ffff80008b0bba00 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008ae71340 x15: 0000000000000001 x14: 1fffe000367b9a02 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000010003 x10: 0000000000ff0100 x9 : 9869d90857f6c200 x8 : 9869d90857f6c200 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080007578 x4 : ffff80008ef65060 x3 : ffff8000805e9200 x2 : 0000000000000001 x1 : 0000000100010001 x0 : 0000000000000000 Call trace: __brelse fs/buffer.c:1235 [inline] brelse include/linux/buffer_head.h:309 [inline] __invalidate_bh_lrus fs/buffer.c:1487 [inline] invalidate_bh_lru+0x128/0x200 fs/buffer.c:1500 csd_do_func kernel/smp.c:133 [inline] __flush_smp_call_function_queue+0x534/0x20cc kernel/smp.c:511 generic_smp_call_function_single_interrupt+0x18/0x24 kernel/smp.c:428 do_handle_IPI arch/arm64/kernel/smp.c:900 [inline] ipi_handler+0x1e0/0x7dc arch/arm64/kernel/smp.c:950 handle_percpu_devid_irq+0x174/0x308 kernel/irq/chip.c:942 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq_desc kernel/irq/irqdesc.c:688 [inline] generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:744 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:771 [inline] __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:822 [inline] gic_handle_irq+0x6c/0x190 drivers/irqchip/irq-gic-v3.c:866 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:310 __el1_irq arch/arm64/kernel/entry-common.c:536 [inline] el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:551 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:556 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:594 rcu_is_watching+0xf8/0x18c kernel/rcu/tree.c:702 rcu_read_unlock include/linux/rcupdate.h:810 [inline] percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline] percpu_ref_put+0x120/0x274 include/linux/percpu-refcount.h:351 css_put include/linux/cgroup_refcnt.h:79 [inline] uncharge_folio+0x34c/0x4e8 mm/memcontrol.c:7500 __mem_cgroup_uncharge_folios+0xe8/0x1c0 mm/memcontrol.c:7523 mem_cgroup_uncharge_folios include/linux/memcontrol.h:721 [inline] folios_put_refs+0x754/0x8d4 mm/swap.c:1033 folios_put include/linux/mm.h:1565 [inline] __folio_batch_release+0x84/0xc0 mm/swap.c:1094 folio_batch_release include/linux/pagevec.h:101 [inline] shmem_undo_range+0x4b0/0x1308 mm/shmem.c:1011 shmem_truncate_range mm/shmem.c:1120 [inline] shmem_evict_inode+0x230/0x8b4 mm/shmem.c:1248 evict+0x260/0x68c fs/inode.c:667 iput_final fs/inode.c:1741 [inline] iput+0x760/0x844 fs/inode.c:1767 dentry_unlink_inode+0x36c/0x4ac fs/dcache.c:400 __dentry_kill+0x178/0x5e8 fs/dcache.c:603 dput+0x1b8/0x290 fs/dcache.c:845 __fput+0x4f8/0x738 fs/file_table.c:430 ____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: 389966 hardirqs last enabled at (389965): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (389965): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (389966): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (389966): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (381134): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (381134): [] __do_softirq+0xb10/0xd2c kernel/softirq.c:583 softirqs last disabled at (381079): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]---