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INFO: task syz-executor:1136 blocked for more than 122 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:0 pid:1136 tgid:1136 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:6027 [inline]
__schedule+0x14ce/0x2100 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7975 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7990
schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8047
__mutex_lock_common kernel/locking/mutex.c:707 [inline]
__mutex_lock+0x960/0x1bc0 kernel/locking/mutex.c:805
__mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x79e/0xa40 net/core/rtnetlink.c:6675
netlink_rcv_skb+0x259/0x4f0 net/netlink/af_netlink.c:2545
rtnetlink_rcv+0x20/0x30 net/core/rtnetlink.c:6696
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x8c0/0xa60 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x7fe/0xb10 net/netlink/af_netlink.c:1889
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x68d/0x700 net/socket.c:2216
__do_sys_sendto net/socket.c:2228 [inline]
__se_sys_sendto net/socket.c:2224 [inline]
__x64_sys_sendto+0xe9/0x100 net/socket.c:2224
x64_sys_call+0x2c2c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:45
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7ff603b57fd7
RSP: 002b:00007ffe5823b210 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000555568792500 RCX: 00007ff603b57fd7
RDX: 000000000000002c RSI: 00007ff604944670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffe5823b274 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 00007ff604944670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:1141 blocked for more than 125 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:0 pid:1141 tgid:1141 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:6027 [inline]
__schedule+0x14ce/0x2100 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7975 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7990
schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8047
__mutex_lock_common kernel/locking/mutex.c:707 [inline]
__mutex_lock+0x960/0x1bc0 kernel/locking/mutex.c:805
__mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x79e/0xa40 net/core/rtnetlink.c:6675
netlink_rcv_skb+0x259/0x4f0 net/netlink/af_netlink.c:2545
rtnetlink_rcv+0x20/0x30 net/core/rtnetlink.c:6696
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x8c0/0xa60 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x7fe/0xb10 net/netlink/af_netlink.c:1889
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x68d/0x700 net/socket.c:2216
__do_sys_sendto net/socket.c:2228 [inline]
__se_sys_sendto net/socket.c:2224 [inline]
__x64_sys_sendto+0xe9/0x100 net/socket.c:2224
x64_sys_call+0x2c2c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:45
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb08c557fd7
RSP: 002b:00007fffeb4c37b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055558dbea500 RCX: 00007fb08c557fd7
RDX: 000000000000002c RSI: 00007fb08d344670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007fffeb4c3814 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fb08d344670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:1142 blocked for more than 126 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:0 pid:1142 tgid:1142 ppid:1 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:6027 [inline]
__schedule+0x14ce/0x2100 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7975 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7990
schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8047
__mutex_lock_common kernel/locking/mutex.c:707 [inline]
__mutex_lock+0x960/0x1bc0 kernel/locking/mutex.c:805
__mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x79e/0xa40 net/core/rtnetlink.c:6675
netlink_rcv_skb+0x259/0x4f0 net/netlink/af_netlink.c:2545
rtnetlink_rcv+0x20/0x30 net/core/rtnetlink.c:6696
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x8c0/0xa60 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x7fe/0xb10 net/netlink/af_netlink.c:1889
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x68d/0x700 net/socket.c:2216
__do_sys_sendto net/socket.c:2228 [inline]
__se_sys_sendto net/socket.c:2224 [inline]
__x64_sys_sendto+0xe9/0x100 net/socket.c:2224
x64_sys_call+0x2c2c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:45
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7eff93157fd7
RSP: 002b:00007ffe612f3970 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055557c8a1500 RCX: 00007eff93157fd7
RDX: 000000000000002c RSI: 00007eff93f44670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffe612f39d4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 00007eff93f44670 R15: 0000000000000000
</TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
<TASK>
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
nmi_cpu_backtrace+0x2ba/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+0xdad/0xf00 kernel/hung_task.c:423
kthread+0x2c9/0x370 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: 17 Comm: ksoftirqd/0 Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:unwind_next_frame+0x30a/0x750 arch/x86/kernel/unwind_frame.c:305
Code: 10 00 74 08 48 89 df e8 04 ae 9b 00 48 c7 03 00 00 00 00 b0 01 e9 a2 02 00 00 4c 8d 6b 50 4d 89 ee 49 c1 ee 03 41 80 3c 16 00 <74> 12 4c 89 ef e8 bc ac 9b 00 48 ba 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffffc90000116d88 EFLAGS: 00000246
RAX: ffffc90000117f30 RBX: ffffc90000116e08 RCX: 0000000000116e00
RDX: dffffc0000000000 RSI: ffffffff8485e187 RDI: ffffc90000117f48
RBP: ffffc90000116df8 R08: ffffc90000116ed0 R09: ffffc90000116ec8
R10: 0000000000000009 R11: ffffffff8175ee80 R12: 0000000000000000
R13: ffffc90000116e58 R14: 1ffff92000022dcb R15: ffffc90000117490
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562404538af8 CR3: 000000010cbd2000 CR4: 00000000003526b0
Call Trace:
<TASK>
arch_stack_walk+0x138/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:49 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:70
kasan_save_free_info+0x4a/0x60 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:249 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2445 [inline]
slab_free mm/slub.c:4714 [inline]
kmem_cache_free+0x1bd/0x4f0 mm/slub.c:4825
kfree_skbmem net/core/skbuff.c:-1 [inline]
__kfree_skb+0x18f/0x210 net/core/skbuff.c:1203
sk_skb_reason_drop+0xd8/0x310 net/core/skbuff.c:1240
kfree_skb_reason include/linux/skbuff.h:1303 [inline]
kfree_skb include/linux/skbuff.h:1312 [inline]
ip6_mc_input+0x516/0x6c0 net/ipv6/ip6_input.c:587
dst_input include/net/dst.h:469 [inline]
ip6_rcv_finish+0x341/0x3c0 net/ipv6/ip6_input.c:79
NF_HOOK include/linux/netfilter.h:317 [inline]
ipv6_rcv+0xf1/0x240 net/ipv6/ip6_input.c:309
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026/06/12 18:42 | android16-6.12 | 8f68185b8289 | 1d2f3589 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/12 14:53 | android16-6.12 | 8f68185b8289 | e93da63e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/12 11:47 | android16-6.12 | 8f68185b8289 | e93da63e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/10 01:29 | android16-6.12 | cb3d3d97558c | 34dab4be | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/08 12:58 | android16-6.12 | b31795d3d788 | cc095639 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/08 05:56 | android16-6.12 | 468e09dd6f52 | cc095639 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/07 02:42 | android16-6.12 | 468e09dd6f52 | cc095639 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/03 08:28 | android16-6.12 | 66b8d2a9700a | 3c0d2131 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/02 18:55 | android16-6.12 | 215bb7dbd9d4 | 62fe1528 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/02 11:14 | android16-6.12 | be0db38c7358 | 62fe1528 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/06/01 22:23 | android16-6.12 | be0db38c7358 | 1095583b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/31 17:18 | android16-6.12 | 34c0581154b9 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/31 16:01 | android16-6.12 | 34c0581154b9 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/31 07:29 | android16-6.12 | 34c0581154b9 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/30 15:42 | android16-6.12 | 34c0581154b9 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/30 10:37 | android16-6.12 | 34c0581154b9 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/29 22:34 | android16-6.12 | 4ea8a1839130 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/29 18:44 | android16-6.12 | 4ea8a1839130 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/28 21:06 | android16-6.12 | ca09f536934e | 681715f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/28 05:45 | android16-6.12 | cb3d27ab1e86 | 4c36e7e5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/27 19:00 | android16-6.12 | b04c6166b137 | 8777bdc3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/27 07:15 | android16-6.12 | ad34d1539656 | 2b01f00e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/26 22:18 | android16-6.12 | ad34d1539656 | 2b01f00e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/25 15:17 | android16-6.12 | 28ab3740535f | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/25 09:52 | android16-6.12 | 28ab3740535f | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/24 13:24 | android16-6.12 | 28ab3740535f | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/22 21:45 | android16-6.12 | 9d40b257ba08 | 5f091fcc | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/21 13:38 | android16-6.12 | 9d40b257ba08 | e195359d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/21 01:39 | android16-6.12 | 8dc6b30c61dc | 41b8c833 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/20 19:34 | android16-6.12 | f0dd0605ee81 | 62fb93a2 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/19 06:34 | android16-6.12 | be343ff665e2 | 9f74d399 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/18 03:48 | android16-6.12 | be343ff665e2 | de5aae85 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/15 20:05 | android16-6.12 | bb3ee689d837 | 9cd3beaa | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/13 23:35 | android16-6.12 | de7da43e33fd | 6ccb967e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/13 20:12 | android16-6.12 | de7da43e33fd | fec2a7ee | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/13 07:31 | android16-6.12 | 547666ca1408 | a0949470 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/13 01:42 | android16-6.12 | 547666ca1408 | a0949470 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/11 15:50 | android16-6.12 | 84b5a9e56e50 | 845acb1c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/11 01:08 | android16-6.12 | 5efa9ec22e39 | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/10 23:42 | android16-6.12 | 5efa9ec22e39 | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/10 00:18 | android16-6.12 | 5efa9ec22e39 | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/09 19:49 | android16-6.12 | 5efa9ec22e39 | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg | ||
| 2026/05/09 18:36 | android16-6.12 | 5efa9ec22e39 | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | INFO: task hung in rtnetlink_rcv_msg |