SELinux: security_context_str_to_sid (system_u) failed with errno=-22 loop3: detected capacity change from 0 to 9 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7682 at net/ipv4/ipmr.c:440 ipmr_rules_exit+0x13a/0x1c0 Modules linked in: CPU: 1 UID: 0 PID: 7682 Comm: syz-executor.2 Not tainted 6.13.0-rc1-next-20241203 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ipmr_rules_exit+0x13a/0x1c0 Code: ff df 48 c1 ea 03 80 3c 02 00 75 7d 48 c7 83 00 08 00 00 00 00 00 00 5b 5d 41 5c 41 5d 41 5e e9 ac 13 a3 00 e8 97 fd 6d fd 90 <0f> 0b 90 eb 93 e8 8c fd 6d fd 0f b6 2d 57 10 59 02 31 ff 89 ee e8 RSP: 0018:ffff88803ff578b8 EFLAGS: 00010212 RAX: 0000000000026862 RBX: ffff88803f03dc00 RCX: ffffc90001be5000 RDX: 0000000000040000 RSI: ffffffff83e3e2b9 RDI: 0000000000000005 RBP: ffff88803f226000 R08: 0000000000000000 R09: ffffed1007e07ba8 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: ffff88803f03e400 R14: ffff88803f03dc00 R15: fffffbfff0c50e80 FS: 00007fee1f7d8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee1f7b7718 CR3: 000000002db5c000 CR4: 0000000000350ef0 Call Trace: ipmr_net_exit_batch+0x53/0xa0 ops_exit_list+0x12b/0x180 setup_net+0x492/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x26c0/0x70e0 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fee22283b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fee1f7d8188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fee22397020 RCX: 00007fee22283b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fee222ddf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffcab09e5f R14: 00007fee1f7d8300 R15: 0000000000022000 irq event stamp: 10015 hardirqs last enabled at (10025): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (10036): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (9804): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (9797): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- syz-executor.0: attempt to access beyond end of device loop0: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop0, logical block 10, lost async page write loop3: detected capacity change from 0 to 9 loop0: detected capacity change from 0 to 40 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 loop3: detected capacity change from 0 to 9 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 loop0: detected capacity change from 0 to 40 loop3: detected capacity change from 0 to 9 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 loop6: detected capacity change from 0 to 40 loop0: detected capacity change from 0 to 40 audit: type=1400 audit(1733301628.901:23): avc: denied { read } for pid=7793 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop6: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 Zero length message leads to an empty skb