------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 10216 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline] WARNING: CPU: 1 PID: 10216 at fs/buffer.c:1235 brelse include/linux/buffer_head.h:309 [inline] WARNING: CPU: 1 PID: 10216 at fs/buffer.c:1235 __invalidate_bh_lrus fs/buffer.c:1487 [inline] WARNING: CPU: 1 PID: 10216 at fs/buffer.c:1235 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1500 Modules linked in: CPU: 1 PID: 10216 Comm: syz-executor.3 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 : ffff800080017e10 x29: ffff800080017e10 x28: ffff80008ee7d568 x27: 0000000000000000 x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b3e00fd0 x23: 0000000000000058 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f49f3df8 x19: ffff80008b0bba00 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008ae71340 x15: 0000000000000001 x14: 1fffe000367be202 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000010004 x10: 0000000000ff0100 x9 : 22b1868903706c00 x8 : 22b1868903706c00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080017578 x4 : ffff80008ef65060 x3 : ffff8000805e9200 x2 : 0000000000000001 x1 : 0000000100010002 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 __sanitizer_cov_trace_pc+0x60/0x6c kernel/kcov.c:223 check_preemption_disabled+0x28/0xf8 lib/smp_processor_id.c:14 debug_smp_processor_id+0x20/0x2c lib/smp_processor_id.c:60 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] rcu_is_watching+0x5c/0x18c kernel/rcu/tree.c:700 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0xe4/0x9cc kernel/locking/lockdep.c:5765 rcu_lock_release+0x24/0x30 include/linux/rcupdate.h:339 rcu_read_unlock include/linux/rcupdate.h:814 [inline] percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline] percpu_ref_put+0x160/0x274 include/linux/percpu-refcount.h:351 css_put include/linux/cgroup_refcnt.h:79 [inline] __mem_cgroup_charge+0xe0/0x148 mm/memcontrol.c:7300 mem_cgroup_charge include/linux/memcontrol.h:691 [inline] shmem_alloc_and_add_folio+0x3ac/0xbcc mm/shmem.c:1683 shmem_get_folio_gfp+0x6dc/0x1624 mm/shmem.c:2061 shmem_get_folio mm/shmem.c:2166 [inline] shmem_write_begin+0x138/0x4bc mm/shmem.c:2750 generic_perform_write+0x28c/0x588 mm/filemap.c:3974 shmem_file_write_iter+0x110/0x138 mm/shmem.c:2926 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x968/0xc3c fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 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: 70550 hardirqs last enabled at (70549): [] mem_cgroup_commit_charge+0x120/0x1c0 mm/memcontrol.c:2977 hardirqs last disabled at (70550): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (70550): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (63610): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (63610): [] __do_softirq+0xb10/0xd2c kernel/softirq.c:583 softirqs last disabled at (63571): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]---