------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 6930 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 6930 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 6930 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 6930 at fs/buffer.c:1148 invalidate_bh_lru+0x130/0x228 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 6930 Comm: syz.0.575 Not tainted 5.15.164-syzkaller #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:1148 [inline] pc : brelse include/linux/buffer_head.h:325 [inline] pc : __invalidate_bh_lrus fs/buffer.c:1394 [inline] pc : invalidate_bh_lru+0x130/0x228 fs/buffer.c:1407 lr : __brelse fs/buffer.c:1148 [inline] lr : brelse include/linux/buffer_head.h:325 [inline] lr : __invalidate_bh_lrus fs/buffer.c:1394 [inline] lr : invalidate_bh_lru+0x130/0x228 fs/buffer.c:1407 sp : ffff800008007df0 x29: ffff800008007df0 x28: ffff0000e27551c0 x27: ffff800008a78a48 x26: dfff800000000000 x25: 0000000000000001 x24: ffff0001b47c32d8 x23: 0000000000000008 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000c0623df8 x19: ffff800011cbd460 x18: 0000000000010003 x17: 0000000000010003 x16: ffff800011ab8a28 x15: 00000000ffffffff x14: ffff0000e27551c0 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000010002 x10: 0000000000010002 x9 : cc551936b2e0a500 x8 : cc551936b2e0a500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800008007558 x4 : ffff800014b9f960 x3 : ffff80000855531c x2 : 0000000000000001 x1 : 0000000100010002 x0 : 0000000000000027 Call trace: __brelse fs/buffer.c:1148 [inline] brelse include/linux/buffer_head.h:325 [inline] __invalidate_bh_lrus fs/buffer.c:1394 [inline] invalidate_bh_lru+0x130/0x228 fs/buffer.c:1407 flush_smp_call_function_queue+0x3d0/0x8c4 kernel/smp.c:628 generic_smp_call_function_single_interrupt+0x18/0x24 kernel/smp.c:544 do_handle_IPI arch/arm64/kernel/smp.c:902 [inline] ipi_handler+0x15c/0x7d4 arch/arm64/kernel/smp.c:948 handle_percpu_devid_irq+0x29c/0x7fc kernel/irq/chip.c:933 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_irq_desc kernel/irq/irqdesc.c:651 [inline] handle_domain_irq+0xec/0x178 kernel/irq/irqdesc.c:706 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:758 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899 do_interrupt_handler+0x74/0x94 arch/arm64/kernel/entry-common.c:267 el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:454 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522 caches_clean_inval_pou+0x7c/0x84 arch/arm64/mm/cache.S:56 set_pte_at+0xf4/0x50c arch/arm64/include/asm/pgtable.h:319 do_set_pte+0x3e0/0x58c mm/memory.c:4041 finish_fault+0x3dc/0x8b8 mm/memory.c:4113 do_read_fault mm/memory.c:4238 [inline] do_fault mm/memory.c:4362 [inline] handle_pte_fault mm/memory.c:4621 [inline] __handle_mm_fault mm/memory.c:4756 [inline] handle_mm_fault+0x2230/0x3424 mm/memory.c:4854 faultin_page mm/gup.c:976 [inline] __get_user_pages+0x39c/0x92c mm/gup.c:1197 populate_vma_page_range+0x200/0x290 mm/gup.c:1529 __mm_populate+0x278/0x41c mm/gup.c:1638 mm_populate include/linux/mm.h:2632 [inline] vm_mmap_pgoff+0x1fc/0x2b4 mm/util.c:556 ksys_mmap_pgoff+0x11c/0x668 mm/mmap.c:1624 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 41514 hardirqs last enabled at (41513): [] lock_page_memcg+0x11c/0x244 mm/memcontrol.c:2056 hardirqs last disabled at (41514): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (40428): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (40428): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (40377): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (40377): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (40377): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (40377): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace bf691ca0191d989f ]---