------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 3837 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline] WARNING: CPU: 0 PID: 3837 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:326 [inline] WARNING: CPU: 0 PID: 3837 at fs/buffer.c:1145 __invalidate_bh_lrus fs/buffer.c:1380 [inline] WARNING: CPU: 0 PID: 3837 at fs/buffer.c:1145 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 Modules linked in: CPU: 0 PID: 3837 Comm: udevd Not tainted 6.1.25-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 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: ffff0001b45c3a98 x23: 0000000000000000 x22: dfff800000000000 x21: 0000000000000000 x20: ffff000128e07888 x19: ffff8000122f00c0 x18: 1ffff000040c0e30 x17: 0000000000000000 x16: ffff8000120dc5fc x15: 0000000000000000 x14: 0000000000010003 x13: 0000000000000001 x12: 0000000000000001 x11: ff808000081ad698 x10: 0000000000010001 x9 : 015e41eefa446a00 x8 : 015e41eefa446a00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000080076d8 x4 : ffff800015662580 x3 : ffff80000858403c 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:630 generic_smp_call_function_single_interrupt+0x28/0x16c kernel/smp.c:546 do_handle_IPI arch/arm64/kernel/smp.c:876 [inline] ipi_handler+0x15c/0x86c arch/arm64/kernel/smp.c:922 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:651 [inline] generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:707 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:695 [inline] __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:746 [inline] gic_handle_irq+0x70/0x1e4 drivers/irqchip/irq-gic-v3.c:790 call_on_irq_stack+0x2c/0x54 arch/arm64/kernel/entry.S:889 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:577 check_kcov_mode kernel/kcov.c:173 [inline] __sanitizer_cov_trace_pc+0x54/0x8c kernel/kcov.c:207 tomoyo_check_acl+0x128/0x384 security/tomoyo/domain.c:175 tomoyo_path_permission+0x170/0x2fc security/tomoyo/file.c:586 tomoyo_check_open_permission+0x264/0x3f4 security/tomoyo/file.c:777 tomoyo_file_open+0x130/0x19c security/tomoyo/tomoyo.c:320 security_file_open+0x6c/0xb0 security/security.c:1649 do_dentry_open+0x2a0/0xfa0 fs/open.c:869 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3557 [inline] path_openat+0x1e14/0x2548 fs/namei.c:3714 do_filp_open+0x1bc/0x3cc fs/namei.c:3741 do_sys_openat2+0x128/0x3d8 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1337 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 irq event stamp: 2334230 hardirqs last enabled at (2334229): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242 hardirqs last disabled at (2334230): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (2334230): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (2333396): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (2333394): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---