------------[ cut here ]------------
WARNING: CPU: 1 PID: 4162 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4162 Comm: syz-executor365 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 bd ea 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 40 e7 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:ffffc90000dd09b8 EFLAGS: 00010246
RAX: ffffffff819fd630 RBX: 0000000000000008 RCX: ffff8880736a9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100e6d53b9
R10: ffffed100e6d53b9 R11: 1ffff1100e6d53b8 R12: ffff8880736ab548
R13: 00007ffffffff000 R14: ffffc90000dd0a28 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000be8e000 CR4: 00000000003506e0
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_dafeb42eb5660805+0x5e/0x3d8
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
dst_destroy+0x20e/0x2e0 net/core/dst.c:120
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:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: f6 ff 0f 1f 00 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ae 15 b2 f7 48 89 df e8 76 ea b2 f7 e8 d1 8e d3 f7 fb bf 01 00 00 00 46 0f a7 f7 65 8b 05 e7 22 58 76 85 c0 74 02 5b c3 e8 84 2d 56
RSP: 0018:ffffc90002dff8c0 EFLAGS: 00000282
RAX: 6e46187505dacb00 RBX: ffff88806fceeab0 RCX: 6e46187505dacb00
RDX: dffffc0000000000 RSI: ffffffff8a0b12c0 RDI: 0000000000000001
RBP: ffffc90002dffa40 R08: dffffc0000000000 R09: fffffbfff1ff3435
R10: fffffbfff1ff3435 R11: 1ffffffff1ff3434 R12: dffffc0000000000
R13: ffff88806fcee908 R14: ffff88806fceeab0 R15: 0000000000000000
spin_unlock_irq include/linux/spinlock.h:413 [inline]
clear_inode+0x65/0x150 fs/inode.c:601
evict+0x4a0/0x870 fs/inode.c:650
__dentry_kill+0x431/0x650 fs/dcache.c:586
shrink_dentry_list+0x388/0x680 fs/dcache.c:1181
shrink_dcache_parent+0xa8/0x3a0 fs/dcache.c:-1
do_one_tree+0x23/0xe0 fs/dcache.c:1662
shrink_dcache_for_umount+0x65/0x110 fs/dcache.c:1679
generic_shutdown_super+0x63/0x300 fs/super.c:447
kill_anon_super fs/super.c:1089 [inline]
kill_litter_super+0x72/0xa0 fs/super.c:1098
gadgetfs_kill_sb+0x22/0x100 drivers/usb/gadget/legacy/inode.c:2100
deactivate_locked_super+0x93/0xf0 fs/super.c:335
cleanup_mnt+0x418/0x4d0 fs/namespace.c:1143
task_work_run+0x125/0x1a0 kernel/task_work.c:188
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0x616/0x20a0 kernel/exit.c:874
do_group_exit+0x12e/0x300 kernel/exit.c:996
__do_sys_exit_group kernel/exit.c:1007 [inline]
__se_sys_exit_group kernel/exit.c:1005 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2a5d7c9df9
Code: Unable to access opcode bytes at RIP 0x7f2a5d7c9dcf.
RSP: 002b:00007ffd38e6f638 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f2a5d7c9df9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f2a5d843390 R08: ffffffffffffffb8 R09: 00007ffd38e6f7c8
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2a5d843390
R13: 0000000000000000 R14: 00007f2a5d845ec0 R15: 00007f2a5d793640
----------------
Code disassembly (best guess):
0: f6 ff idiv %bh
2: 0f 1f 00 nopl (%rax)
5: 53 push %rbx
6: 48 89 fb mov %rdi,%rbx
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 ae 15 b2 f7 call 0xf7b215c5
17: 48 89 df mov %rbx,%rdi
1a: e8 76 ea b2 f7 call 0xf7b2ea95
1f: e8 d1 8e d3 f7 call 0xf7d38ef5
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 46 0f a7 f7 call 0xf7a70f75 <-- trapping instruction
2f: 65 8b 05 e7 22 58 76 mov %gs:0x765822e7(%rip),%eax # 0x7658231d
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5b pop %rbx
3b: c3 ret
3c: e8 .byte 0xe8
3d: 84 .byte 0x84
3e: 2d .byte 0x2d
3f: 56 push %rsi