------------[ cut here ]------------
WARNING: CPU: 1 PID: 1286 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 1286 Comm: kworker/u4:4 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: netns cleanup_net
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ad e2 d7 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 30 df d7 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd09f8 EFLAGS: 00010246
RAX: ffffffff819fe2f0 RBX: 0000000000000000 RCX: ffff888022485940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004490b29
R10: ffffed1004490b29 R11: 1ffff11004490b28 R12: ffff8880224870c8
R13: 00007ffffffff000 R14: ffffc90000dd0a68 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe2ba0a3f98 CR3: 000000005584b000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_3d2613b5dfc7747f+0x32/0xc0
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
kmem_cache_free+0x1e7/0x210 mm/slub.c:3516
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:down_write+0x1/0x60 kernel/locking/rwsem.c:1549
Code: c1 88 df 68 8d 80 e1 07 80 c1 03 38 c1 0f 8c 13 fe ff ff 48 c7 c7 88 df 68 8d e8 6a 2c 13 f8 e9 02 fe ff ff 0f 1f 44 00 00 53 <48> 89 fb 48 c7 c7 20 05 0b 8a be 0e 06 00 00 31 d2 e8 39 e4 a8 f7
RSP: 0018:ffffc90005657830 EFLAGS: 00000282
RAX: ffffffff81ebc9a7 RBX: 0000000000000100 RCX: ffff888022485940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c24e1c0
RBP: ffffc90005657970 R08: dffffc0000000000 R09: fffffbfff1ad157e
R10: fffffbfff1ad157e R11: 1ffffffff1ad157d R12: ffff88805b7950e8
R13: dffffc0000000000 R14: 0000000080000001 R15: ffff88805b7950e8
kernfs_drain fs/kernfs/dir.c:494 [inline]
__kernfs_remove+0x797/0xc50 fs/kernfs/dir.c:1372
kernfs_remove_by_name_ns+0x91/0x100 fs/kernfs/dir.c:1566
kernfs_remove_by_name include/linux/kernfs.h:598 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0xf8/0x290 fs/sysfs/group.c:289
sysfs_remove_groups+0x50/0xa0 fs/sysfs/group.c:313
destroy_gid_attrs drivers/infiniband/core/sysfs.c:1175 [inline]
ib_free_port_attrs+0xc1/0x3b0 drivers/infiniband/core/sysfs.c:1400
remove_one_compat_dev drivers/infiniband/core/device.c:1010 [inline]
rdma_dev_exit_net+0x1d5/0x330 drivers/infiniband/core/device.c:1148
ops_exit_list net/core/net_namespace.c:172 [inline]
cleanup_net+0x6f0/0xb80 net/core/net_namespace.c:635
process_one_work+0x863/0x1000 kernel/workqueue.c:2310
worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 88 df mov %bl,%bh
2: 68 8d 80 e1 07 push $0x7e1808d
7: 80 c1 03 add $0x3,%cl
a: 38 c1 cmp %al,%cl
c: 0f 8c 13 fe ff ff jl 0xfffffe25
12: 48 c7 c7 88 df 68 8d mov $0xffffffff8d68df88,%rdi
19: e8 6a 2c 13 f8 call 0xf8132c88
1e: e9 02 fe ff ff jmp 0xfffffe25
23: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
28: 53 push %rbx
* 29: 48 89 fb mov %rdi,%rbx <-- trapping instruction
2c: 48 c7 c7 20 05 0b 8a mov $0xffffffff8a0b0520,%rdi
33: be 0e 06 00 00 mov $0x60e,%esi
38: 31 d2 xor %edx,%edx
3a: e8 39 e4 a8 f7 call 0xf7a8e478