syzbot

INFO: task kworker/1:2:330 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D stack:0     pid:330   tgid:330   ppid:2      flags:0x00004000
Workqueue: events _RNvXs6_NtCs43vyB533jt3_6kernel9workqueueINtNtNtB7_4sync3arc3ArcNtNtCs5gLWsBERDPK_16rust_binder_main7process7ProcessEINtB5_15WorkItemPointerKy0_E3runB13_
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 schedule_timeout+0xb2/0x3a0 kernel/time/timer.c:2595
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common+0x359/0x630 kernel/sched/completion.c:127
 wait_for_completion_state+0x19/0x40 kernel/sched/completion.c:264
 __wait_rcu_gp+0x296/0x2c0 kernel/rcu/update.c:514
 synchronize_rcu_normal+0x113/0x160 kernel/rcu/tree.c:4043
 synchronize_rcu+0x98/0x2e0 kernel/rcu/tree.c:4121
 core::ptr::drop_in_place::<kernel::sync::poll::PollCondVar> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::ptr::drop_in_place::<rust_binder_main::thread::Thread> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::ptr::drop_in_place::<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 <kernel::alloc::kbox::Box<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>, kernel::alloc::allocator::Kmalloc> as core::ops::drop::Drop>::drop rust/kernel/alloc/kbox.rs:487 [inline]
 core::ptr::drop_in_place::<kernel::alloc::kbox::Box<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>, kernel::alloc::allocator::Kmalloc>>+0x2ab/0x340 usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523
 core::mem::drop::<kernel::alloc::kbox::Box<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline]
 <kernel::sync::arc::Arc<rust_binder_main::thread::Thread> as core::ops::drop::Drop>::drop rust/kernel/sync/arc.rs:404 [inline]
 core::ptr::drop_in_place::<kernel::sync::arc::Arc<rust_binder_main::thread::Thread>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::ptr::drop_in_place::<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 <kernel::alloc::kbox::Box<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>, kernel::alloc::allocator::Kmalloc> as core::ops::drop::Drop>::drop rust/kernel/alloc/kbox.rs:487 [inline]
 core::ptr::drop_in_place::<kernel::alloc::kbox::Box<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::mem::drop::<kernel::alloc::kbox::Box<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline]
 <kernel::rbtree::RBTree<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>> as core::ops::drop::Drop>::drop rust/kernel/rbtree.rs:499 [inline]
 core::ptr::drop_in_place::<kernel::rbtree::RBTree<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>>+0xc5/0x190 usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523
 core::mem::drop::<kernel::rbtree::RBTree<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline]
 <rust_binder_main::process::Process>::deferred_release drivers/android/binder/process.rs:1406 [inline]
 <rust_binder_main::process::Process as kernel::workqueue::WorkItem>::run+0x244b/0x2820 drivers/android/binder/process.rs:505
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x7d2/0x1020 kernel/workqueue.c:3319
 worker_thread+0xc58/0x1250 kernel/workqueue.c:3400
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task kworker/1:3:31039 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3     state:D stack:0     pid:31039 tgid:31039 ppid:2      flags:0x00004000
Workqueue: events _RNvXs6_NtCs43vyB533jt3_6kernel9workqueueINtNtNtB7_4sync3arc3ArcNtNtCs5gLWsBERDPK_16rust_binder_main7process7ProcessEINtB5_15WorkItemPointerKy0_E3runB13_
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 schedule_timeout+0xb2/0x3a0 kernel/time/timer.c:2595
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common+0x359/0x630 kernel/sched/completion.c:127
 wait_for_completion_state+0x19/0x40 kernel/sched/completion.c:264
 __wait_rcu_gp+0x296/0x2c0 kernel/rcu/update.c:514
 synchronize_rcu_normal+0x113/0x160 kernel/rcu/tree.c:4043
 synchronize_rcu+0x98/0x2e0 kernel/rcu/tree.c:4121
 core::ptr::drop_in_place::<kernel::sync::poll::PollCondVar> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::ptr::drop_in_place::<rust_binder_main::thread::Thread> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::ptr::drop_in_place::<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 <kernel::alloc::kbox::Box<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>, kernel::alloc::allocator::Kmalloc> as core::ops::drop::Drop>::drop rust/kernel/alloc/kbox.rs:487 [inline]
 core::ptr::drop_in_place::<kernel::alloc::kbox::Box<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>, kernel::alloc::allocator::Kmalloc>>+0x2ab/0x340 usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523
 core::mem::drop::<kernel::alloc::kbox::Box<kernel::sync::arc::ArcInner<rust_binder_main::thread::Thread>, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline]
 <kernel::sync::arc::Arc<rust_binder_main::thread::Thread> as core::ops::drop::Drop>::drop rust/kernel/sync/arc.rs:404 [inline]
 core::ptr::drop_in_place::<kernel::sync::arc::Arc<rust_binder_main::thread::Thread>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::ptr::drop_in_place::<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 <kernel::alloc::kbox::Box<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>, kernel::alloc::allocator::Kmalloc> as core::ops::drop::Drop>::drop rust/kernel/alloc/kbox.rs:487 [inline]
 core::ptr::drop_in_place::<kernel::alloc::kbox::Box<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline]
 core::mem::drop::<kernel::alloc::kbox::Box<kernel::rbtree::Node<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline]
 <kernel::rbtree::RBTree<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>> as core::ops::drop::Drop>::drop rust/kernel/rbtree.rs:499 [inline]
 core::ptr::drop_in_place::<kernel::rbtree::RBTree<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>>+0xc5/0x190 usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523
 core::mem::drop::<kernel::rbtree::RBTree<i32, kernel::sync::arc::Arc<rust_binder_main::thread::Thread>>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline]
 <rust_binder_main::process::Process>::deferred_release drivers/android/binder/process.rs:1406 [inline]
 <rust_binder_main::process::Process as kernel::workqueue::WorkItem>::run+0x244b/0x2820 drivers/android/binder/process.rs:505
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x7d2/0x1020 kernel/workqueue.c:3319
 worker_thread+0xc58/0x1250 kernel/workqueue.c:3400
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz.4.11830:3048 blocked for more than 124 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.11830     state:D stack:0     pid:3048  tgid:3048  ppid:1243   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 schedule_timeout+0xb2/0x3a0 kernel/time/timer.c:2595
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common+0x359/0x630 kernel/sched/completion.c:127
 wait_for_completion_state+0x19/0x40 kernel/sched/completion.c:264
 __wait_rcu_gp+0x296/0x2c0 kernel/rcu/update.c:514
 synchronize_rcu_normal+0x113/0x160 kernel/rcu/tree.c:4043
 synchronize_rcu+0x98/0x2e0 kernel/rcu/tree.c:4121
 bcm_release+0x638/0x8d0 net/can/bcm.c:1642
 __sock_release net/socket.c:659 [inline]
 sock_close+0xdd/0x280 net/socket.c:1427
 __fput+0x1fb/0xa00 fs/file_table.c:429
 ____fput+0x20/0x30 fs/file_table.c:457
 task_work_run+0x1e0/0x250 kernel/task_work.c:240
 resume_user_mode_work+0x36/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x64/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x64/0xf0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f8e3d78f6c9
RSP: 002b:00007fffdda9a5f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00000000000d988a RCX: 00007f8e3d78f6c9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f8e3d9e7da0 R08: 0000000000000001 R09: 0000001ddda9a8ef
R10: 0000001b31920000 R11: 0000000000000246 R12: 00007f8e3d9e5fac
R13: 00007f8e3d9e5fa0 R14: ffffffffffffffff R15: 00007fffdda9a710
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 99 Comm: klogd Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:do_slab_free mm/slub.c:4641 [inline]
RIP: 0010:___cache_free+0x77/0xe0 mm/slub.c:4753
Code: 01 75 7b 48 01 d0 0f b6 48 33 c1 e1 18 45 31 c0 81 f9 00 00 00 f5 4c 0f 44 c0 65 48 8b 05 89 b4 29 7e 48 8b 0f 48 8b 54 08 08 <4c> 3b 44 08 10 75 37 48 8b 04 01 48 39 c3 74 4c 8b 4f 28 48 8d 34
RSP: 0018:ffffc90000e4f758 EFLAGS: 00000246
RAX: ffff8881f6e00000 RBX: ffff888195a24000 RCX: 00000000000734a0
RDX: 0000000005a6f120 RSI: ffff888195a24000 RDI: ffff8881066473c0
RBP: ffffc90000e4f760 R08: ffffea0006568900 R09: ffffffff81dc7c8a
R10: 0000000000000003 R11: 0000000000000fd8 R12: ffff8881066473c0
R13: ffff888195a24640 R14: 0000000000000000 R15: ffff888195a24000
FS:  00007f7842b3fc80(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d1d5ecdb90 CR3: 000000010bb3e000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0xb5/0x130 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x180 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x28/0x90 mm/kasan/common.c:330
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4178 [inline]
 slab_alloc_node mm/slub.c:4227 [inline]
 kmem_cache_alloc_node_noprof+0x1d6/0x440 mm/slub.c:4281
 __alloc_skb+0x10c/0x370 net/core/skbuff.c:677
 alloc_skb include/linux/skbuff.h:1331 [inline]
 alloc_skb_with_frags+0xce/0x8b0 net/core/skbuff.c:6609
 sock_alloc_send_pskb+0x858/0x990 net/core/sock.c:2919
 unix_dgram_sendmsg+0x59a/0x1b70 net/unix/af_unix.c:2038
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 __sys_sendto+0x66d/0x6f0 net/socket.c:2217
 __do_sys_sendto net/socket.c:2229 [inline]
 __se_sys_sendto net/socket.c:2225 [inline]
 __x64_sys_sendto+0xe9/0x100 net/socket.c:2225
 x64_sys_call+0x2c2c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f7842c8f407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fff746a2b10 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f7842b3fc80 RCX: 00007f7842c8f407
RDX: 0000000000000055 RSI: 00007fff746a2c50 RDI: 0000000000000003
RBP: 00007fff746a3080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007fff746a3098
R13: 00007fff746a2c50 R14: 000000000000003a R15: 00007fff746a2c50
 </TASK>
net_ratelimit: 62623 callbacks suppressed
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:5e:bb:c1:85:51:4b, vlan:0)