------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 6458 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline] WARNING: CPU: 0 PID: 6458 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:326 [inline] WARNING: CPU: 0 PID: 6458 at fs/buffer.c:1145 __invalidate_bh_lrus fs/buffer.c:1380 [inline] WARNING: CPU: 0 PID: 6458 at fs/buffer.c:1145 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 Modules linked in: CPU: 0 PID: 6458 Comm: syz.6.320 Not tainted 6.1.128-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __brelse fs/buffer.c:1145 [inline] pc : brelse include/linux/buffer_head.h:326 [inline] pc : __invalidate_bh_lrus fs/buffer.c:1380 [inline] pc : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 lr : __brelse fs/buffer.c:1145 [inline] lr : brelse include/linux/buffer_head.h:326 [inline] lr : __invalidate_bh_lrus fs/buffer.c:1380 [inline] lr : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 sp : ffff800008007df0 x29: ffff800008007df0 x28: 0000000000000000 x27: 0000000000000000 x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b3cee658 x23: 0000000000000008 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f47557a0 x19: ffff800012553780 x18: 0000000000000140 x17: 0000000000000000 x16: ffff8000123313e4 x15: 0000000000010003 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000010001 x9 : 7dd5e43f34efd000 x8 : 7dd5e43f34efd000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000080076d8 x4 : ffff800015b731c0 x3 : ffff800008586abc x2 : 0000000000000001 x1 : 0000000100010001 x0 : 0000000000000000 Call trace: __brelse fs/buffer.c:1145 [inline] brelse include/linux/buffer_head.h:326 [inline] __invalidate_bh_lrus fs/buffer.c:1380 [inline] invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 __flush_smp_call_function_queue+0x46c/0x1118 kernel/smp.c:641 generic_smp_call_function_single_interrupt+0x28/0x16c kernel/smp.c:557 do_handle_IPI arch/arm64/kernel/smp.c:878 [inline] ipi_handler+0x15c/0x86c arch/arm64/kernel/smp.c:924 handle_percpu_devid_irq+0x174/0x354 kernel/irq/chip.c:930 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_irq_desc kernel/irq/irqdesc.c:652 [inline] generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:708 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:744 [inline] __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:795 [inline] gic_handle_irq+0x70/0x1e4 drivers/irqchip/irq-gic-v3.c:839 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:893 do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:274 __el1_irq arch/arm64/kernel/entry-common.c:471 [inline] el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 instrument_atomic_read include/linux/instrumented.h:72 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] page_ref_count include/linux/page_ref.h:67 [inline] put_page_testzero include/linux/mm.h:769 [inline] folio_put_testzero include/linux/mm.h:775 [inline] release_pages+0x29c/0x1418 mm/swap.c:1005 free_pages_and_swap_cache+0xa0/0xb8 mm/swap_state.c:314 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0x11c/0x218 mm/mmu_gather.c:261 zap_pte_range mm/memory.c:1525 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0x1bd8/0x1fc4 mm/memory.c:1645 unmap_single_vma mm/memory.c:1691 [inline] unmap_vmas+0x394/0x550 mm/memory.c:1730 exit_mmap+0x1d0/0xa0c mm/mmap.c:3238 __mmput+0xec/0x39c kernel/fork.c:1200 mmput+0x70/0xac kernel/fork.c:1222 exit_mm+0x14c/0x244 kernel/exit.c:565 do_exit+0x4d0/0x1a84 kernel/exit.c:858 do_group_exit+0x194/0x22c kernel/exit.c:1021 get_signal+0x14a0/0x158c kernel/signal.c:2871 do_signal arch/arm64/kernel/signal.c:1076 [inline] do_notify_resume+0x388/0x2cb8 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 2686 hardirqs last enabled at (2685): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (2685): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (2686): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (2686): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (2666): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (2666): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (2513): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]---