------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Not tainted 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d253 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9775d0 x20: ffff0001b42e9298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 36240 hardirqs last enabled at (36239): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (36240): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (35726): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (35724): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b08 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e1d76a58 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 41038 hardirqs last enabled at (41037): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (41038): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (39902): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (39902): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586 softirqs last disabled at (39839): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (39839): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (39839): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (39839): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641 ---[ end trace ed959f3122165b09 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d253 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000c5698d10 x20: ffff0001b42e9298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 66332 hardirqs last enabled at (66331): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (66332): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (64922): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (64920): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b0e ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d253 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dc21d7a0 x20: ffff0001b42e9298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 75696 hardirqs last enabled at (75695): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (75696): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (74630): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (74628): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b10 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e1fa34e8 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 121300 hardirqs last enabled at (121299): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (121300): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (121286): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (121284): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b1a ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d254 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9cb6b8 x20: ffff0001b42e92a0 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 127364 hardirqs last enabled at (127363): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (127364): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (127224): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (127222): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b1c ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e1fa3c28 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 131198 hardirqs last enabled at (131197): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (131198): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (130376): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (130374): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b1d ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d254 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9cba58 x20: ffff0001b42e92a0 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 134494 hardirqs last enabled at (134493): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (134494): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (134314): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (134312): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b1e ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d253 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9c75d0 x20: ffff0001b42e9298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 163288 hardirqs last enabled at (163287): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (163288): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (162652): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (162650): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b23 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000ee018ee0 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000083007d8 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff8000083008e8 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 185644 hardirqs last enabled at (185643): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (185644): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (184520): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (184518): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b26 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d254 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9c4148 x20: ffff0001b42e92a0 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 204688 hardirqs last enabled at (204687): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (204688): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (203956): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (203954): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b2a ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000ddb89230 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 210896 hardirqs last enabled at (210895): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (210896): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (209792): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (209790): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b2b ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000ddb89970 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 245170 hardirqs last enabled at (245169): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (245170): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (244856): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (244856): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586 softirqs last disabled at (244835): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (244835): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (244835): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (244835): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641 ---[ end trace ed959f3122165b31 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9827a0 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 259908 hardirqs last enabled at (259907): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (259908): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (259894): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (259892): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b33 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe00036859053 x26: 0000000000000001 x25: ffff0001b42c8298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd982b40 x20: ffff0001b42c8298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 266826 hardirqs last enabled at (266825): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (266826): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (266328): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (266326): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ed959f3122165b34 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d253 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9c07a0 x20: ffff0001b42e9298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff800008503848 x2 : 0000000000000001 x1 : 0000000100000002 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+0x128/0x234 fs/buffer.c:1407 smp_call_function_many_cond+0xa50/0xeb0 kernel/smp.c:960 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x168/0x31c block/bdev.c:659 blkdev_put_whole block/bdev.c:690 [inline] blkdev_put+0x490/0x6ac block/bdev.c:957 blkdev_close+0x74/0xb0 block/fops.c:475 __fput+0x1c0/0x7f8 fs/file_table.c:311 ____fput+0x20/0x30 fs/file_table.c:339 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 296502 hardirqs last enabled at (296501): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (296502): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (295772): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (295772): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586 softirqs last disabled at (295185): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (295185): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (295185): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (295185): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641 ---[ end trace ed959f3122165b38 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4489 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4489 Comm: udevd Tainted: G W 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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+0x128/0x234 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+0x128/0x234 fs/buffer.c:1407 sp : ffff80001f7f77c0 x29: ffff80001f7f77c0 x28: ffff80001414d000 x27: 1fffe0003685d253 x26: 0000000000000001 x25: ffff0001b42e9298 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd9c0ee0 x20: ffff0001b42e9298 x19: ffff8000113aada0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000083007d8 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 852c6c9ea1d24300 x8 : 852c6c9ea1d24300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f7f70b8 x4 : ffff80001422f280 x3 : ffff8000083008e8