------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 9895 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline] WARNING: CPU: 0 PID: 9895 at fs/buffer.c:1235 brelse include/linux/buffer_head.h:309 [inline] WARNING: CPU: 0 PID: 9895 at fs/buffer.c:1235 __invalidate_bh_lrus fs/buffer.c:1487 [inline] WARNING: CPU: 0 PID: 9895 at fs/buffer.c:1235 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1500 Modules linked in: CPU: 0 PID: 9895 Comm: syz-executor.4 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: 0000000000000000 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f1cee7a0 x19: ffff80008b0bba00 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008ae71340 x15: 0000000000000001 x14: 1fffe000367b9a02 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000010004 x10: 0000000000ff0100 x9 : 9baef9417673ca00 x8 : 9baef9417673ca00 x7 : 000000000018b968 x6 : 000000000018b910 x5 : ffff800080007578 x4 : ffff80008ef588e0 x3 : ffff8000805e9200 x2 : 0000000000000001 x1 : 0000000000010002 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 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] _raw_spin_unlock_irq+0x34/0x80 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:401 [inline] acct_collect+0x528/0x6dc kernel/acct.c:590 do_exit+0x30c/0x1ac8 kernel/exit.c:857 do_group_exit+0x194/0x22c kernel/exit.c:1027 get_signal+0x1414/0x1530 kernel/signal.c:2911 do_signal+0x238/0x3e8c arch/arm64/kernel/signal.c:1308 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148 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: 1732 hardirqs last enabled at (1731): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (1731): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (1732): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (1732): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (1620): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1618): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---