BUG: using smp_processor_id() in preemptible [00000000] code: syz.3.4/5813
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5813 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x413/0xa50 fs/file_table.c:513
 task_work_run+0x1d9/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f459439e159
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:00007fff1204f958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f4594627da0 RCX: 00007f459439e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4594627da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f4594627cb0 R11: 0000000000000246 R12: 0000000000015b1e
R13: 00007f459462618c R14: 0000000000015887 R15: 00007f4594626180
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.3.4/5813
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5813 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x413/0xa50 fs/file_table.c:513
 task_work_run+0x1d9/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f459439e159
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:00007fff1204f958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f4594627da0 RCX: 00007f459439e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4594627da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f4594627cb0 R11: 0000000000000246 R12: 0000000000015b1e
R13: 00007f459462618c R14: 0000000000015887 R15: 00007f4594626180
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.3.4/5813
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5813 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x413/0xa50 fs/file_table.c:513
 task_work_run+0x1d9/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f459439e159
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:00007fff1204f958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f4594627da0 RCX: 00007f459439e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4594627da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f4594627cb0 R11: 0000000000000246 R12: 0000000000015b1e
R13: 00007f459462618c R14: 0000000000015887 R15: 00007f4594626180
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.3.4/5813
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5813 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x413/0xa50 fs/file_table.c:513
 task_work_run+0x1d9/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f459439e159
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:00007fff1204f958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f4594627da0 RCX: 00007f459439e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4594627da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f4594627cb0 R11: 0000000000000246 R12: 0000000000015b1e
R13: 00007f459462618c R14: 0000000000015887 R15: 00007f4594626180
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.3.4/5813
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5813 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x413/0xa50 fs/file_table.c:513
 task_work_run+0x1d9/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f459439e159
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:00007fff1204f958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f4594627da0 RCX: 00007f459439e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4594627da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f4594627cb0 R11: 0000000000000246 R12: 0000000000015b1e
R13: 00007f459462618c R14: 0000000000015887 R15: 00007f4594626180
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.3.4/5813
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5813 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x413/0xa50 fs/file_table.c:513
 task_work_run+0x1d9/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f459439e159
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:00007fff1204f958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f4594627da0 RCX: 00007f459439e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4594627da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f4594627cb0 R11: 0000000000000246 R12: 0000000000015b1e
R13: 00007f459462618c R14: 0000000000015887 R15: 00007f4594626180
 </TASK>