[v6.6] INFO: rcu detected stall in sys_setsockopt
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syzbot
Feb 13, 2026, 3:47:31 AM (4 days ago) Feb 13
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 1b4ef5214f17 Linux 6.6.124
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=163e8ffa580000
kernel config: https://syzkaller.appspot.com/x/.config?x=2a950bf7c0bff9f9
dashboard link: https://syzkaller.appspot.com/bug?extid=035e355f20769f1e35a0
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6b7e376edb98/disk-1b4ef521.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/05ee4e939bb9/vmlinux-1b4ef521.xz
kernel image: https://storage.googleapis.com/syzbot-assets/18d2b8008716/bzImage-1b4ef521.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+035e35...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10394 ticks this GP) idle=dcfc/1/0x4000000000000000 softirq=22083/22114 fqs=3
rcu: hardirqs softirqs csw/system
rcu: number: 668057 132 0
rcu: cputime: 12899 3858 5 ==> 16760(ms)
rcu: (t=10500 jiffies g=23061 q=615 ncpus=2)
rcu: rcu_preempt kthread starved for 1674 jiffies! g23061 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27312 pid:17 ppid:2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667
rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 7052 Comm: syz.7.277 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:ieee80211_sdata_running net/mac80211/ieee80211_i.h:2040 [inline]
RIP: 0010:__ieee80211_rx_handle_packet net/mac80211/rx.c:5271 [inline]
RIP: 0010:ieee80211_rx_list+0x259c/0x32d0 net/mac80211/rx.c:5437
Code: 00 00 00 e8 86 76 e0 f7 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 a7 74 e0 f7 49 8b 1e <89> de 83 e6 01 31 ff e8 c8 4f 88 f7 f6 c3 01 75 0a e8 7e 4b 88 f7
RSP: 0018:ffffc900001f09e0 EFLAGS: 00000246
RAX: 1ffff110060b0ab5 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880305855a8
RBP: ffffc900001f0c30 R08: ffff8880305855af R09: 1ffff110060b0ab5
R10: dffffc0000000000 R11: ffffed10060b0ab6 R12: ffff888030584c80
R13: ffff888077ef2938 R14: ffff8880305855a8 R15: ffff88805eb17000
FS: 00007fe99d8516c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000075f7e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
ieee80211_rx_napi+0x1b2/0x3d0 net/mac80211/rx.c:5460
ieee80211_rx include/net/mac80211.h:4971 [inline]
ieee80211_handle_queued_frames+0x106/0x1a0 net/mac80211/main.c:319
tasklet_action_common+0x302/0x4d0 kernel/softirq.c:809
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:schedule_debug kernel/sched/core.c:5958 [inline]
RIP: 0010:__schedule+0x210/0x45a0 kernel/sched/core.c:6591
Code: 74 28 80 3d 06 0a e9 03 00 75 1f c6 05 fd 09 e9 03 01 48 c7 c7 40 54 ca 8a be 46 17 00 00 48 c7 c2 c0 5a ca 8a e8 d0 7c dc f6 <e8> 7b 09 f8 ff 85 c0 74 46 48 c7 c7 60 20 13 8d be ff ff ff ff e8
RSP: 0018:ffffc9000463eee0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90004638000 RCX: 070b35d8f3168f00
RDX: 0000000000000000 RSI: ffffffff8acada80 RDI: ffffffff8b1c81e0
RBP: ffffc9000463f0f0 R08: ffffc9000463f07f R09: 0000000000000000
R10: ffffc9000463f070 R11: fffff520008c7e10 R12: 1ffff920008c7dfc
R13: ffff8880b8f00000 R14: dffffc0000000000 R15: 0000000000000001
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
unwind_next_frame+0x200f/0x2970 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:237
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x270 mm/slub.c:3852
kfree_skb include/linux/skbuff.h:1232 [inline]
tipc_sk_proto_rcv+0x79b/0x1790 net/tipc/socket.c:2185
tipc_sk_filter_rcv+0x2ea6/0x30d0 net/tipc/socket.c:2355
tipc_sk_backlog_rcv+0x147/0x270 net/tipc/socket.c:2410
sk_backlog_rcv include/net/sock.h:1142 [inline]
__release_sock+0x1e5/0x460 net/core/sock.c:3011
release_sock+0x5f/0x1c0 net/core/sock.c:3550
tipc_setsockopt+0x7aa/0x990 net/tipc/socket.c:3219
do_sock_setsockopt+0x175/0x1a0 net/socket.c:2321
__sys_setsockopt net/socket.c:2344 [inline]
__do_sys_setsockopt net/socket.c:2353 [inline]
__se_sys_setsockopt net/socket.c:2350 [inline]
__x64_sys_setsockopt+0x182/0x200 net/socket.c:2350
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe99c99bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe99d851028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe99cc15fa0 RCX: 00007fe99c99bf79
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000009
RBP: 00007fe99ca327e0 R08: 0000000000000043 R09: 0000000000000000
R10: 00002000000008c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe99cc16038 R14: 00007fe99cc15fa0 R15: 00007ffc31e3dca8
</TASK>
CPU: 1 PID: 7052 Comm: syz.7.277 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:ieee80211_sdata_running net/mac80211/ieee80211_i.h:2040 [inline]
RIP: 0010:__ieee80211_rx_handle_packet net/mac80211/rx.c:5271 [inline]
RIP: 0010:ieee80211_rx_list+0x259c/0x32d0 net/mac80211/rx.c:5437
Code: 00 00 00 e8 86 76 e0 f7 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 a7 74 e0 f7 49 8b 1e <89> de 83 e6 01 31 ff e8 c8 4f 88 f7 f6 c3 01 75 0a e8 7e 4b 88 f7
RSP: 0018:ffffc900001f09e0 EFLAGS: 00000246
RAX: 1ffff110060b0ab5 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880305855a8
RBP: ffffc900001f0c30 R08: ffff8880305855af R09: 1ffff110060b0ab5
R10: dffffc0000000000 R11: ffffed10060b0ab6 R12: ffff888030584c80
R13: ffff888077ef2938 R14: ffff8880305855a8 R15: ffff88805eb17000
FS: 00007fe99d8516c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000075f7e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
ieee80211_rx_napi+0x1b2/0x3d0 net/mac80211/rx.c:5460
ieee80211_rx include/net/mac80211.h:4971 [inline]
ieee80211_handle_queued_frames+0x106/0x1a0 net/mac80211/main.c:319
tasklet_action_common+0x302/0x4d0 kernel/softirq.c:809
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:schedule_debug kernel/sched/core.c:5958 [inline]
RIP: 0010:__schedule+0x210/0x45a0 kernel/sched/core.c:6591
Code: 74 28 80 3d 06 0a e9 03 00 75 1f c6 05 fd 09 e9 03 01 48 c7 c7 40 54 ca 8a be 46 17 00 00 48 c7 c2 c0 5a ca 8a e8 d0 7c dc f6 <e8> 7b 09 f8 ff 85 c0 74 46 48 c7 c7 60 20 13 8d be ff ff ff ff e8
RSP: 0018:ffffc9000463eee0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90004638000 RCX: 070b35d8f3168f00
RDX: 0000000000000000 RSI: ffffffff8acada80 RDI: ffffffff8b1c81e0
RBP: ffffc9000463f0f0 R08: ffffc9000463f07f R09: 0000000000000000
R10: ffffc9000463f070 R11: fffff520008c7e10 R12: 1ffff920008c7dfc
R13: ffff8880b8f00000 R14: dffffc0000000000 R15: 0000000000000001
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
unwind_next_frame+0x200f/0x2970 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:237
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x270 mm/slub.c:3852
kfree_skb include/linux/skbuff.h:1232 [inline]
tipc_sk_proto_rcv+0x79b/0x1790 net/tipc/socket.c:2185
tipc_sk_filter_rcv+0x2ea6/0x30d0 net/tipc/socket.c:2355
tipc_sk_backlog_rcv+0x147/0x270 net/tipc/socket.c:2410
sk_backlog_rcv include/net/sock.h:1142 [inline]
__release_sock+0x1e5/0x460 net/core/sock.c:3011
release_sock+0x5f/0x1c0 net/core/sock.c:3550
tipc_setsockopt+0x7aa/0x990 net/tipc/socket.c:3219
do_sock_setsockopt+0x175/0x1a0 net/socket.c:2321
__sys_setsockopt net/socket.c:2344 [inline]
__do_sys_setsockopt net/socket.c:2353 [inline]
__se_sys_setsockopt net/socket.c:2350 [inline]
__x64_sys_setsockopt+0x182/0x200 net/socket.c:2350
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe99c99bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe99d851028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe99cc15fa0 RCX: 00007fe99c99bf79
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000009
RBP: 00007fe99ca327e0 R08: 0000000000000043 R09: 0000000000000000
R10: 00002000000008c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe99cc16038 R14: 00007fe99cc15fa0 R15: 00007ffc31e3dca8
</TASK>
---
This report is generated by a bot. It may contain errors.
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 1b4ef5214f17 Linux 6.6.124
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=163e8ffa580000
kernel config: https://syzkaller.appspot.com/x/.config?x=2a950bf7c0bff9f9
dashboard link: https://syzkaller.appspot.com/bug?extid=035e355f20769f1e35a0
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6b7e376edb98/disk-1b4ef521.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/05ee4e939bb9/vmlinux-1b4ef521.xz
kernel image: https://storage.googleapis.com/syzbot-assets/18d2b8008716/bzImage-1b4ef521.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+035e35...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10394 ticks this GP) idle=dcfc/1/0x4000000000000000 softirq=22083/22114 fqs=3
rcu: hardirqs softirqs csw/system
rcu: number: 668057 132 0
rcu: cputime: 12899 3858 5 ==> 16760(ms)
rcu: (t=10500 jiffies g=23061 q=615 ncpus=2)
rcu: rcu_preempt kthread starved for 1674 jiffies! g23061 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27312 pid:17 ppid:2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667
rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 7052 Comm: syz.7.277 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:ieee80211_sdata_running net/mac80211/ieee80211_i.h:2040 [inline]
RIP: 0010:__ieee80211_rx_handle_packet net/mac80211/rx.c:5271 [inline]
RIP: 0010:ieee80211_rx_list+0x259c/0x32d0 net/mac80211/rx.c:5437
Code: 00 00 00 e8 86 76 e0 f7 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 a7 74 e0 f7 49 8b 1e <89> de 83 e6 01 31 ff e8 c8 4f 88 f7 f6 c3 01 75 0a e8 7e 4b 88 f7
RSP: 0018:ffffc900001f09e0 EFLAGS: 00000246
RAX: 1ffff110060b0ab5 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880305855a8
RBP: ffffc900001f0c30 R08: ffff8880305855af R09: 1ffff110060b0ab5
R10: dffffc0000000000 R11: ffffed10060b0ab6 R12: ffff888030584c80
R13: ffff888077ef2938 R14: ffff8880305855a8 R15: ffff88805eb17000
FS: 00007fe99d8516c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000075f7e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
ieee80211_rx_napi+0x1b2/0x3d0 net/mac80211/rx.c:5460
ieee80211_rx include/net/mac80211.h:4971 [inline]
ieee80211_handle_queued_frames+0x106/0x1a0 net/mac80211/main.c:319
tasklet_action_common+0x302/0x4d0 kernel/softirq.c:809
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:schedule_debug kernel/sched/core.c:5958 [inline]
RIP: 0010:__schedule+0x210/0x45a0 kernel/sched/core.c:6591
Code: 74 28 80 3d 06 0a e9 03 00 75 1f c6 05 fd 09 e9 03 01 48 c7 c7 40 54 ca 8a be 46 17 00 00 48 c7 c2 c0 5a ca 8a e8 d0 7c dc f6 <e8> 7b 09 f8 ff 85 c0 74 46 48 c7 c7 60 20 13 8d be ff ff ff ff e8
RSP: 0018:ffffc9000463eee0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90004638000 RCX: 070b35d8f3168f00
RDX: 0000000000000000 RSI: ffffffff8acada80 RDI: ffffffff8b1c81e0
RBP: ffffc9000463f0f0 R08: ffffc9000463f07f R09: 0000000000000000
R10: ffffc9000463f070 R11: fffff520008c7e10 R12: 1ffff920008c7dfc
R13: ffff8880b8f00000 R14: dffffc0000000000 R15: 0000000000000001
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
unwind_next_frame+0x200f/0x2970 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:237
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x270 mm/slub.c:3852
kfree_skb include/linux/skbuff.h:1232 [inline]
tipc_sk_proto_rcv+0x79b/0x1790 net/tipc/socket.c:2185
tipc_sk_filter_rcv+0x2ea6/0x30d0 net/tipc/socket.c:2355
tipc_sk_backlog_rcv+0x147/0x270 net/tipc/socket.c:2410
sk_backlog_rcv include/net/sock.h:1142 [inline]
__release_sock+0x1e5/0x460 net/core/sock.c:3011
release_sock+0x5f/0x1c0 net/core/sock.c:3550
tipc_setsockopt+0x7aa/0x990 net/tipc/socket.c:3219
do_sock_setsockopt+0x175/0x1a0 net/socket.c:2321
__sys_setsockopt net/socket.c:2344 [inline]
__do_sys_setsockopt net/socket.c:2353 [inline]
__se_sys_setsockopt net/socket.c:2350 [inline]
__x64_sys_setsockopt+0x182/0x200 net/socket.c:2350
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe99c99bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe99d851028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe99cc15fa0 RCX: 00007fe99c99bf79
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000009
RBP: 00007fe99ca327e0 R08: 0000000000000043 R09: 0000000000000000
R10: 00002000000008c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe99cc16038 R14: 00007fe99cc15fa0 R15: 00007ffc31e3dca8
</TASK>
CPU: 1 PID: 7052 Comm: syz.7.277 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:ieee80211_sdata_running net/mac80211/ieee80211_i.h:2040 [inline]
RIP: 0010:__ieee80211_rx_handle_packet net/mac80211/rx.c:5271 [inline]
RIP: 0010:ieee80211_rx_list+0x259c/0x32d0 net/mac80211/rx.c:5437
Code: 00 00 00 e8 86 76 e0 f7 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 a7 74 e0 f7 49 8b 1e <89> de 83 e6 01 31 ff e8 c8 4f 88 f7 f6 c3 01 75 0a e8 7e 4b 88 f7
RSP: 0018:ffffc900001f09e0 EFLAGS: 00000246
RAX: 1ffff110060b0ab5 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880305855a8
RBP: ffffc900001f0c30 R08: ffff8880305855af R09: 1ffff110060b0ab5
R10: dffffc0000000000 R11: ffffed10060b0ab6 R12: ffff888030584c80
R13: ffff888077ef2938 R14: ffff8880305855a8 R15: ffff88805eb17000
FS: 00007fe99d8516c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000075f7e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
ieee80211_rx_napi+0x1b2/0x3d0 net/mac80211/rx.c:5460
ieee80211_rx include/net/mac80211.h:4971 [inline]
ieee80211_handle_queued_frames+0x106/0x1a0 net/mac80211/main.c:319
tasklet_action_common+0x302/0x4d0 kernel/softirq.c:809
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:schedule_debug kernel/sched/core.c:5958 [inline]
RIP: 0010:__schedule+0x210/0x45a0 kernel/sched/core.c:6591
Code: 74 28 80 3d 06 0a e9 03 00 75 1f c6 05 fd 09 e9 03 01 48 c7 c7 40 54 ca 8a be 46 17 00 00 48 c7 c2 c0 5a ca 8a e8 d0 7c dc f6 <e8> 7b 09 f8 ff 85 c0 74 46 48 c7 c7 60 20 13 8d be ff ff ff ff e8
RSP: 0018:ffffc9000463eee0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90004638000 RCX: 070b35d8f3168f00
RDX: 0000000000000000 RSI: ffffffff8acada80 RDI: ffffffff8b1c81e0
RBP: ffffc9000463f0f0 R08: ffffc9000463f07f R09: 0000000000000000
R10: ffffc9000463f070 R11: fffff520008c7e10 R12: 1ffff920008c7dfc
R13: ffff8880b8f00000 R14: dffffc0000000000 R15: 0000000000000001
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
unwind_next_frame+0x200f/0x2970 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:237
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x270 mm/slub.c:3852
kfree_skb include/linux/skbuff.h:1232 [inline]
tipc_sk_proto_rcv+0x79b/0x1790 net/tipc/socket.c:2185
tipc_sk_filter_rcv+0x2ea6/0x30d0 net/tipc/socket.c:2355
tipc_sk_backlog_rcv+0x147/0x270 net/tipc/socket.c:2410
sk_backlog_rcv include/net/sock.h:1142 [inline]
__release_sock+0x1e5/0x460 net/core/sock.c:3011
release_sock+0x5f/0x1c0 net/core/sock.c:3550
tipc_setsockopt+0x7aa/0x990 net/tipc/socket.c:3219
do_sock_setsockopt+0x175/0x1a0 net/socket.c:2321
__sys_setsockopt net/socket.c:2344 [inline]
__do_sys_setsockopt net/socket.c:2353 [inline]
__se_sys_setsockopt net/socket.c:2350 [inline]
__x64_sys_setsockopt+0x182/0x200 net/socket.c:2350
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe99c99bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe99d851028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe99cc15fa0 RCX: 00007fe99c99bf79
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000009
RBP: 00007fe99ca327e0 R08: 0000000000000043 R09: 0000000000000000
R10: 00002000000008c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe99cc16038 R14: 00007fe99cc15fa0 R15: 00007ffc31e3dca8
</TASK>
---
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