Warning: Permanently added '[localhost]:48183' (ECDSA) to the list of known hosts. 2025/07/03 10:09:28 fuzzer started 2025/07/03 10:09:28 dialing manager at localhost:33709 syzkaller login: [ 49.967204] cgroup: Unknown subsys name 'net' [ 50.029962] cgroup: Unknown subsys name 'cpuset' [ 50.046480] cgroup: Unknown subsys name 'rlimit' 2025/07/03 10:09:39 syscalls: 2214 2025/07/03 10:09:39 code coverage: enabled 2025/07/03 10:09:39 comparison tracing: enabled 2025/07/03 10:09:39 extra coverage: enabled 2025/07/03 10:09:39 setuid sandbox: enabled 2025/07/03 10:09:39 namespace sandbox: enabled 2025/07/03 10:09:39 Android sandbox: enabled 2025/07/03 10:09:39 fault injection: enabled 2025/07/03 10:09:39 leak checking: enabled 2025/07/03 10:09:39 net packet injection: enabled 2025/07/03 10:09:39 net device setup: enabled 2025/07/03 10:09:39 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2025/07/03 10:09:39 devlink PCI setup: PCI device 0000:00:10.0 is not available 2025/07/03 10:09:39 USB emulation: enabled 2025/07/03 10:09:39 hci packet injection: enabled 2025/07/03 10:09:39 wifi device emulation: enabled 2025/07/03 10:09:39 802.15.4 emulation: enabled 2025/07/03 10:09:39 fetching corpus: 0, signal 0/2000 (executing program) 2025/07/03 10:09:39 fetching corpus: 50, signal 14052/17747 (executing program) 2025/07/03 10:09:40 fetching corpus: 100, signal 23151/28360 (executing program) 2025/07/03 10:09:40 fetching corpus: 150, signal 31544/38016 (executing program) 2025/07/03 10:09:40 fetching corpus: 200, signal 33841/41797 (executing program) 2025/07/03 10:09:40 fetching corpus: 250, signal 37276/46566 (executing program) 2025/07/03 10:09:40 fetching corpus: 300, signal 43819/54109 (executing program) 2025/07/03 10:09:40 fetching corpus: 350, signal 47796/59130 (executing program) 2025/07/03 10:09:40 fetching corpus: 400, signal 52889/65026 (executing program) 2025/07/03 10:09:40 fetching corpus: 450, signal 55760/68897 (executing program) 2025/07/03 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163856/165010 (executing program) 2025/07/03 10:09:56 starting 8 fuzzer processes 10:09:56 executing program 0: r0 = socket$inet_udp(0x2, 0x2, 0x0) getsockopt$IPT_SO_GET_ENTRIES(r0, 0x0, 0x41, 0x0, &(0x7f00000023c0)) 10:09:56 executing program 1: syz_mount_image$iso9660(0x0, &(0x7f0000000100)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) mount(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) chown(&(0x7f00000036c0)='./file0\x00', 0x0, 0x0) 10:09:56 executing program 2: r0 = syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0) setsockopt$WPAN_SECURITY_LEVEL(r0, 0x0, 0x2, &(0x7f0000000140)=0xffefffff, 0x4) 10:09:56 executing program 3: move_pages(0x0, 0x1, &(0x7f00000000c0)=[&(0x7f0000003000/0x3000)=nil], 0x0, &(0x7f0000000100), 0x0) 10:09:56 executing program 4: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x0, 0x0) ioctl$LOOP_SET_FD(r0, 0x125d, 0xffffffffffffffff) [ 77.884553] audit: type=1400 audit(1751537396.974:7): avc: denied { execmem } for pid=271 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 10:09:56 executing program 5: perf_event_open(&(0x7f0000000340)={0x2, 0x80, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = creat(&(0x7f00000003c0)='./file0\x00', 0x0) ioctl$EXT4_IOC_GET_ES_CACHE(r0, 0x40086607, &(0x7f0000000000)) 10:09:57 executing program 6: r0 = syz_open_dev$tty20(0xc, 0x4, 0x0) r1 = dup(r0) ioctl$TIOCSTI(r1, 0x5412, &(0x7f0000001080)) ioctl$TCSETAW(r0, 0x5407, &(0x7f0000001000)={0x0, 0x0, 0x0, 0x0, 0x0, "185596f6469a6145"}) read(r0, &(0x7f0000000000)=""/4096, 0x1000) 10:09:57 executing program 7: io_setup(0x572, &(0x7f0000000140)=0x0) r1 = socket$nl_xfrm(0x10, 0x3, 0x6) io_submit(r0, 0x1, &(0x7f00000000c0)=[&(0x7f0000000080)={0x0, 0x0, 0x8, 0x8, 0x0, r1, 0x0}]) [ 79.260582] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 79.266482] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 79.269472] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 79.271378] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.277233] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 79.280047] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.281667] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 79.283261] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 79.285775] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 79.287571] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 79.290684] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 79.292170] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 79.294615] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 79.296007] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 79.304566] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 79.305591] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 79.310591] Bluetooth: hci5: unexpected cc 0x0c03 length: 249 > 1 [ 79.312067] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 79.312624] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 79.316645] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 79.319186] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.321128] Bluetooth: hci5: unexpected cc 0x1003 length: 249 > 9 [ 79.324882] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 79.326676] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 79.327857] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 79.329114] Bluetooth: hci5: unexpected cc 0x1001 length: 249 > 9 [ 79.331472] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 79.333455] Bluetooth: hci6: unexpected cc 0x0c03 length: 249 > 1 [ 79.334508] Bluetooth: hci7: unexpected cc 0x0c03 length: 249 > 1 [ 79.337064] Bluetooth: hci7: unexpected cc 0x1003 length: 249 > 9 [ 79.339193] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 79.341249] Bluetooth: hci7: unexpected cc 0x1001 length: 249 > 9 [ 79.342585] Bluetooth: hci6: unexpected cc 0x1003 length: 249 > 9 [ 79.350334] Bluetooth: hci6: unexpected cc 0x1001 length: 249 > 9 [ 79.353699] Bluetooth: hci5: unexpected cc 0x0c23 length: 249 > 4 [ 79.371088] Bluetooth: hci7: unexpected cc 0x0c23 length: 249 > 4 [ 79.376521] Bluetooth: hci6: unexpected cc 0x0c23 length: 249 > 4 [ 79.378619] Bluetooth: hci7: unexpected cc 0x0c38 length: 249 > 2 [ 79.388047] Bluetooth: hci6: unexpected cc 0x0c38 length: 249 > 2 [ 79.399318] Bluetooth: hci5: unexpected cc 0x0c38 length: 249 > 2 [ 79.488955] [ 79.489560] ============================= [ 79.490258] WARNING: suspicious RCU usage [ 79.490950] 6.16.0-rc4-next-20250703 #1 Not tainted [ 79.492934] ----------------------------- [ 79.495229] fs/proc/proc_sysctl.c:934 suspicious rcu_dereference_check() usage! [ 79.498936] [ 79.498936] other info that might help us debug this: [ 79.498936] [ 79.500296] [ 79.500296] rcu_scheduler_active = 2, debug_locks = 1 [ 79.501445] 3 locks held by syz-executor.6/284: [ 79.502270] #0: ffff88800f57e400 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1cd3/0x2880 [ 79.503789] #1: ffff88800ba5a618 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: path_openat+0x1308/0x2880 [ 79.505514] #2: ffff888009356b18 (&lockref->lock){+.+.}-{3:3}, at: d_alloc_parallel+0xf97/0x1330 [ 79.507087] [ 79.507087] stack backtrace: [ 79.507838] CPU: 1 UID: 0 PID: 284 Comm: syz-executor.6 Not tainted 6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) [ 79.507870] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 79.507882] Call Trace: [ 79.507890] [ 79.507906] dump_stack_lvl+0xfa/0x120 [ 79.507944] lockdep_rcu_suspicious+0x152/0x1c0 [ 79.507971] proc_sys_compare+0x28a/0x340 [ 79.507992] ? __pfx_proc_sys_compare+0x10/0x10 [ 79.508015] d_same_name+0x229/0x2e0 [ 79.508051] d_alloc_parallel+0x7c1/0x1330 [ 79.508088] ? __pfx_d_alloc_parallel+0x10/0x10 [ 79.508115] ? __pfx_default_wake_function+0x10/0x10 [ 79.508147] ? __d_lookup+0x25f/0x490 [ 79.508179] lookup_open.isra.0+0x64f/0x1530 [ 79.508212] ? __pfx_lookup_open.isra.0+0x10/0x10 [ 79.508256] ? mnt_get_write_access+0x81/0x2d0 [ 79.508276] ? mnt_get_write_access+0x1ea/0x2d0 [ 79.508304] path_openat+0xc26/0x2880 [ 79.508344] ? __lock_acquire+0x694/0x1b70 [ 79.508366] ? __pfx_path_openat+0x10/0x10 [ 79.508406] do_filp_open+0x1e8/0x450 [ 79.508436] ? __pfx_do_filp_open+0x10/0x10 [ 79.508478] ? find_held_lock+0x2b/0x80 [ 79.508507] ? alloc_fd+0x2c1/0x560 [ 79.508534] ? lock_release+0xc8/0x290 [ 79.508562] ? alloc_fd+0x2c1/0x560 [ 79.508598] do_sys_openat2+0x104/0x1b0 [ 79.508623] ? __pfx_do_sys_openat2+0x10/0x10 [ 79.508648] ? rcu_read_unlock+0x2d/0xb0 [ 79.508670] ? lock_release+0xc8/0x290 [ 79.508698] __x64_sys_openat+0x142/0x200 [ 79.508723] ? __pfx___x64_sys_openat+0x10/0x10 [ 79.508754] ? trace_irq_enable.constprop.0+0xc2/0x100 [ 79.508791] do_syscall_64+0xbf/0x360 [ 79.508814] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.508836] RIP: 0033:0x7f1cc2b46a04 [ 79.508853] Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 [ 79.508873] RSP: 002b:00007ffd9c5aa3a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 79.508894] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f1cc2b46a04 [ 79.508908] RDX: 0000000000080001 RSI: 00007f1cc2becf61 RDI: 00000000ffffff9c [ 79.508921] RBP: 00007f1cc2becf61 R08: 0000000000000000 R09: 00007ffd9c5aa390 [ 79.508934] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080001 [ 79.508947] R13: 00007ffd9c5aa440 R14: 0000000000000000 R15: 00000000000000f8 [ 79.508976] [ 81.413444] Bluetooth: hci3: command tx timeout [ 81.413694] Bluetooth: hci6: command tx timeout [ 81.414360] Bluetooth: hci4: command tx timeout [ 81.415078] Bluetooth: hci0: command tx timeout [ 81.415726] Bluetooth: hci2: command tx timeout [ 81.416304] Bluetooth: hci1: command tx timeout [ 81.477331] Bluetooth: hci7: command tx timeout [ 81.478554] Bluetooth: hci5: command tx timeout [ 83.463057] Bluetooth: hci2: command tx timeout [ 83.463495] Bluetooth: hci0: command tx timeout [ 83.463853] Bluetooth: hci1: command tx timeout [ 83.464933] Bluetooth: hci4: command tx timeout [ 83.465026] Bluetooth: hci6: command tx timeout [ 83.465304] Bluetooth: hci3: command tx timeout [ 83.525036] Bluetooth: hci5: command tx timeout [ 83.525466] Bluetooth: hci7: command tx timeout [ 85.508981] Bluetooth: hci2: command tx timeout [ 85.509459] Bluetooth: hci1: command tx timeout [ 85.509842] Bluetooth: hci3: command tx timeout [ 85.510276] Bluetooth: hci6: command tx timeout [ 85.510660] Bluetooth: hci4: command tx timeout [ 85.511127] Bluetooth: hci0: command tx timeout [ 85.572962] Bluetooth: hci5: command tx timeout [ 85.573403] Bluetooth: hci7: command tx timeout [ 87.557106] Bluetooth: hci2: command tx timeout [ 87.557545] Bluetooth: hci1: command tx timeout [ 87.558152] Bluetooth: hci4: command tx timeout [ 87.558509] Bluetooth: hci0: command tx timeout [ 87.558861] Bluetooth: hci6: command tx timeout [ 87.558933] Bluetooth: hci3: command tx timeout [ 87.621084] Bluetooth: hci7: command tx timeout [ 87.621213] Bluetooth: hci5: command tx timeout VM DIAGNOSIS: 10:09:58 Registers: info registers vcpu 0 RAX=000000006858d96a RBX=ffff888016f75280 RCX=00000000b8b7ab0b RDX=0000000000000008 RSI=ffff888016f75d00 RDI=00000000505ed1ae RBP=ffff888016f75cd8 RSP=ffff888013b77988 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000000 R12=ffff888016f75d00 R13=97a726a3b8b7ab0b R14=0000000000000001 R15=0000000000000001 RIP=ffffffff8151942d RFL=00000007 [-----PC] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff8880e55f2000 00000000 00000000 LDT=0000 fffffe0100000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f4f265536f4 CR3=0000000005a88000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00007f4f2656247000007f4f26561f20 XMM02=00000000000000000000000000000000 XMM03=756e20796d6d756420736e6f6974706f XMM04=2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=73253d656d616e6c6165722073253d73 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000065 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff828b5535 RDI=ffffffff8871ef20 RBP=ffffffff8871eee0 RSP=ffff8880194b72b8 R8 =0000000000000000 R9 =ffffed10016ce046 R10=0000000000000065 R11=0000000000000001 R12=0000000000000065 R13=0000000000000010 R14=ffffffff8871eee0 R15=ffffffff828b5520 RIP=ffffffff828b558d RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000555589ad1400 00000000 00000000 GS =0000 ffff8880e56f2000 00000000 00000000 LDT=0000 fffffe6d00000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffd9c5a9db8 CR3=000000000b571000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=ffffffffffffff00000000ff00000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000