------------[ cut here ]------------
WARNING: CPU: 0 PID: 3561 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 3561 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d f6 d8 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 10 f3 d8 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:ffffc90000007958 EFLAGS: 00010246
RAX: ffffffff819ed900 RBX: 0000000000000008 RCX: ffff88807ccdbb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f99b771
R10: ffffed100f99b771 R11: 1ffff1100f99b770 R12: ffff88807ccdd308
R13: 00007ffffffff000 R14: ffffc900000079c8 R15: 0000000000000000
FS: 00007f51574b5880(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000025225000 CR4: 00000000003506f0
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_ee60aafa828f4cb7+0x35/0x9ec
bpf_dispatcher_nop_func include/linux/bpf.h:888 [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_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x25f/0x2a0 mm/slub.c:4554
sctp_addr_wq_timeout_handler+0x2e6/0x450 net/sctp/protocol.c:681
call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x525/0x7c0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
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:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
RIP: 0010:tomoyo_check_acl+0x2d3/0x3f0 security/tomoyo/domain.c:184
Code: 83 23 01 00 00 4d 8d 65 01 41 c1 e5 04 49 81 c5 e0 08 00 00 4d 8d 74 24 ff 44 89 f7 c1 ef 03 81 e7 f8 1f 00 00 4c 8b 7c 24 28 <4c> 01 ff be 08 00 00 00 e8 70 af 20 fe 31 f6 4d 0f a3 37 40 0f 93
RSP: 0018:ffffc90002eaf5f0 EFLAGS: 00000206
RAX: ffffffff839b867d RBX: dffffc0000000000 RCX: ffff88807ccdbb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffff88802ab05901 R08: dffffc0000000000 R09: ffffed1005560b3a
R10: ffffed1005560b3a R11: 1ffff11005560b39 R12: 00000000000000f4
R13: 0000000000001810 R14: 00000000000000f3 R15: ffff88802ab059b0
tomoyo_path_permission+0x1b4/0x380 security/tomoyo/file.c:586
tomoyo_check_open_permission+0x216/0x360 security/tomoyo/file.c:777
security_file_open+0x5e/0xa0 security/security.c:1668
do_dentry_open+0x322/0xf80 fs/open.c:813
do_open fs/namei.c:3616 [inline]
path_openat+0x2682/0x2f30 fs/namei.c:3750
do_filp_open+0x1b3/0x3e0 fs/namei.c:3777
do_sys_openat2+0x142/0x4a0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1280
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: 0033:0x7f5157611c3a
Code: 41 89 f2 48 89 54 24 e0 41 83 e2 40 75 2a 89 f0 f7 d0 a9 00 00 41 00 74 1f 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 2e c3 0f 1f 44 00 00 48 8d 44 24 08 c7 44 24
RSP: 002b:00007ffc24f89368 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005578f33697d0 RCX: 00007f5157611c3a
RDX: 0000000000090800 RSI: 00005578f32ea510 RDI: 00000000ffffff9c
RBP: 00005578f32ea510 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000206 R12: 00005578f32f67b0
R13: 00000000000000ff R14: 00005578e89b5be0 R15: 00007ffc24f895f0
----------------
Code disassembly (best guess):
0: 83 23 01 andl $0x1,(%rbx)
3: 00 00 add %al,(%rax)
5: 4d 8d 65 01 lea 0x1(%r13),%r12
9: 41 c1 e5 04 shl $0x4,%r13d
d: 49 81 c5 e0 08 00 00 add $0x8e0,%r13
14: 4d 8d 74 24 ff lea -0x1(%r12),%r14
19: 44 89 f7 mov %r14d,%edi
1c: c1 ef 03 shr $0x3,%edi
1f: 81 e7 f8 1f 00 00 and $0x1ff8,%edi
25: 4c 8b 7c 24 28 mov 0x28(%rsp),%r15
* 2a: 4c 01 ff add %r15,%rdi <-- trapping instruction
2d: be 08 00 00 00 mov $0x8,%esi
32: e8 70 af 20 fe call 0xfe20afa7
37: 31 f6 xor %esi,%esi
39: 4d 0f a3 37 bt %r14,(%r15)
3d: 40 rex
3e: 0f .byte 0xf
3f: 93 xchg %eax,%ebx