------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e2442318 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 47248 hardirqs last enabled at (47247): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (47248): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (47040): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (47038): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cd5 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e24426b8 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 56060 hardirqs last enabled at (56059): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (56060): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (55860): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (55858): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cd7 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e246e888 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 89352 hardirqs last enabled at (89351): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (89352): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (89150): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (89148): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cdd ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000c066c970 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 102544 hardirqs last enabled at (102543): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (102544): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (102338): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (102336): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ce1 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e25f2230 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 105464 hardirqs last enabled at (105463): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (105464): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (105252): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (105250): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ce2 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e24d0ee0 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 119722 hardirqs last enabled at (119721): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (119722): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (119508): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (119506): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ce4 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e25f2970 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 133344 hardirqs last enabled at (133343): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (133344): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (133142): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (133140): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ce7 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e25f2d10 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 137054 hardirqs last enabled at (137053): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (137054): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (136968): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (136966): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ce8 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e25f3400 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 140030 hardirqs last enabled at (140029): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (140030): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (139822): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (139820): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ce9 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e25f37a0 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 143314 hardirqs last enabled at (143313): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (143314): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (143122): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (143120): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cea ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e243f4e8 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 152134 hardirqs last enabled at (152133): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (152134): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (151928): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (151926): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cec ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e243f888 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 155406 hardirqs last enabled at (155405): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (155406): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (155194): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (155192): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535ced ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65c x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e24d1060 x20: ffff0001a10e32e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 158456 hardirqs last enabled at (158455): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (158456): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (158258): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (158256): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cee ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e24d1400 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 161796 hardirqs last enabled at (161795): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (161796): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (161608): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (161606): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cef ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e243fc28 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 169488 hardirqs last enabled at (169487): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (169488): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (169276): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (169274): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cf1 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845b x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e243b060 x20: ffff0001a10c22d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 193012 hardirqs last enabled at (193011): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (193012): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (192826): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (192824): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cf6 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e248ab40 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 199726 hardirqs last enabled at (199725): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (199726): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (199174): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (199172): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cf8 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000c066bdf8 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 205512 hardirqs last enabled at (205511): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (205512): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (205290): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (205288): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535cf9 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000c066a4e8 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 240564 hardirqs last enabled at (240563): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (240564): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (240350): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (240348): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d00 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e2434230 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 254182 hardirqs last enabled at (254181): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (254182): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (253978): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (253976): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d02 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000deb5c148 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 276260 hardirqs last enabled at (276259): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (276260): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (276060): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (276058): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d07 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65c x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd278148 x20: ffff0001a10e32e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 289088 hardirqs last enabled at (289087): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (289088): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (288882): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (288880): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d0a ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 0 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 0 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421845c x26: 0000000000000001 x25: ffff0001a10c22d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000deb5c888 x20: ffff0001a10c22e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 295948 hardirqs last enabled at (295947): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (295948): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (295754): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (295752): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d0c ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000dd278c28 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 304508 hardirqs last enabled at (304507): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (304508): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (304298): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (304296): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d0f ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65c x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000cc6cbee0 x20: ffff0001a10e32e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000850471c 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:478 __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: 354156 hardirqs last enabled at (354155): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (354156): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (353944): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (353942): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d19 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65c x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e258e970 x20: ffff0001a10e32e0 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff800008302168 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff800008302278 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:478 __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: 371128 hardirqs last enabled at (371127): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (371128): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (370926): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (370924): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d1e ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e258f148 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff80000a7281cc x2 : ffff0001a10d4d50 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:478 __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: 377682 hardirqs last enabled at (377681): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (377682): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959 softirqs last enabled at (376960): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (376958): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 5889a8ac30535d20 ]--- ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline] WARNING: CPU: 1 PID: 4544 at fs/buffer.c:1148 invalidate_bh_lru+0x128/0x234 fs/buffer.c:1407 Modules linked in: CPU: 1 PID: 4544 Comm: udevd Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 624000c5 (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 : ffff80001f2877c0 x29: ffff80001f2877c0 x28: ffff80001417d000 x27: 1fffe0003421c65b x26: 0000000000000001 x25: ffff0001a10e32d8 x24: 0000000000000000 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000e258f888 x20: ffff0001a10e32d8 x19: ffff8000113d9aa0 x18: 0000000000000003 x17: 0000000000000000 x16: ffff800008302168 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000002 x10: 0000000000000000 x9 : 0aadacbfbf5d5800 x8 : 0aadacbfbf5d5800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f2870b8 x4 : ffff80001425f420 x3 : ffff800008302278 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:478 __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: 391054 hardirqs last enabled at (391053): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (391054): [] smp_call_function_many_cond+0xa44/0xeb0 kernel/smp.c:959