Warning: Permanently added '[localhost]:55644' (ECDSA) to the list of known hosts. 2025/07/03 10:11:01 fuzzer started 2025/07/03 10:11:01 dialing manager at localhost:33709 syzkaller login: [ 51.022295] cgroup: Unknown subsys name 'net' [ 51.087124] cgroup: Unknown subsys name 'cpuset' [ 51.108243] cgroup: Unknown subsys name 'rlimit' 2025/07/03 10:11:12 syscalls: 2214 2025/07/03 10:11:12 code coverage: enabled 2025/07/03 10:11:12 comparison tracing: enabled 2025/07/03 10:11:12 extra coverage: enabled 2025/07/03 10:11:12 setuid sandbox: enabled 2025/07/03 10:11:12 namespace sandbox: enabled 2025/07/03 10:11:12 Android sandbox: enabled 2025/07/03 10:11:12 fault injection: enabled 2025/07/03 10:11:12 leak checking: enabled 2025/07/03 10:11:12 net packet injection: enabled 2025/07/03 10:11:12 net device setup: enabled 2025/07/03 10:11:12 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2025/07/03 10:11:12 devlink PCI setup: PCI device 0000:00:10.0 is not available 2025/07/03 10:11:12 USB emulation: enabled 2025/07/03 10:11:12 hci packet injection: enabled 2025/07/03 10:11:12 wifi device emulation: enabled 2025/07/03 10:11:12 802.15.4 emulation: enabled 2025/07/03 10:11:12 fetching corpus: 0, signal 0/2000 (executing program) 2025/07/03 10:11:12 fetching corpus: 50, signal 14951/18609 (executing program) 2025/07/03 10:11:12 fetching corpus: 100, signal 25172/30321 (executing program) 2025/07/03 10:11:12 fetching corpus: 150, signal 32099/38619 (executing program) 2025/07/03 10:11:12 fetching corpus: 200, signal 38464/46195 (executing program) 2025/07/03 10:11:12 fetching corpus: 250, signal 45892/54621 (executing program) 2025/07/03 10:11:12 fetching corpus: 300, signal 49508/59425 (executing program) 2025/07/03 10:11:12 fetching corpus: 350, signal 52238/63267 (executing program) 2025/07/03 10:11:12 fetching corpus: 400, signal 55571/67643 (executing program) 2025/07/03 10:11:12 fetching corpus: 450, signal 58264/71379 (executing program) 2025/07/03 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(executing program) 2025/07/03 10:11:29 starting 8 fuzzer processes 10:11:29 executing program 0: openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/vmallocinfo\x00', 0x0, 0x0) 10:11:29 executing program 1: r0 = syz_io_uring_setup(0x77b6, &(0x7f0000000000), &(0x7f0000ff9000/0x4000)=nil, &(0x7f0000ffe000/0x1000)=nil, &(0x7f0000000180), &(0x7f0000001240)) io_uring_register$IORING_REGISTER_BUFFERS(r0, 0x0, &(0x7f00000011c0)=[{&(0x7f00000001c0)=""/4096, 0x1000}, {&(0x7f0000000140), 0x2000}], 0x2) [ 78.051145] audit: type=1400 audit(1751537489.150:7): avc: denied { execmem } for pid=272 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 10:11:29 executing program 2: openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000400), 0x410802, 0x0) 10:11:29 executing program 3: r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$packet_fanout(r0, 0x107, 0x7, &(0x7f0000000000), 0x4) 10:11:29 executing program 4: r0 = socket$inet6_udplite(0xa, 0x2, 0x88) r1 = fcntl$dupfd(r0, 0x0, r0) getsockopt$inet6_udp_int(r1, 0x11, 0x0, &(0x7f0000001700), &(0x7f0000001740)=0xfffffffffffffdff) 10:11:29 executing program 5: unshare(0x6000000) unshare(0x4a000000) 10:11:29 executing program 6: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000100)='./file0\x00', 0x40000, 0x3, &(0x7f0000000200)=[{&(0x7f0000010000)="200000004000000003000000300000000f000000000000000200000002000000008000000080000020000000dcf4655fdcf4655f0100ffff53ef010001000000dbf4655f000000000000000001000000000000000b0000000002", 0x5a, 0x400}, {&(0x7f0000010400)="02000000030000000400000030000f000300040000000000000000000f008ec4", 0x20, 0x1000}, {&(0x7f0000012600)="ed41000000100000dbf4655fdcf4655fdcf4655f000000000000040008", 0x1d, 0x4200}], 0x0, &(0x7f0000000040)={[{@i_version}, {@usrquota}]}) 10:11:29 executing program 7: r0 = openat$sndseq(0xffffffffffffff9c, &(0x7f0000002cc0), 0x0) ioctl$SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT(r0, 0x40505330, &(0x7f0000000180)={{}, {0x0, 0x9}}) [ 79.301690] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 79.303766] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 79.305899] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 79.307427] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.309205] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 79.310793] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.317689] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.320398] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 79.324392] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 79.339609] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 79.363684] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 79.367597] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 79.370455] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 79.377624] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 79.382388] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 79.392362] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 79.394276] Bluetooth: hci5: unexpected cc 0x0c03 length: 249 > 1 [ 79.396109] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 79.398909] Bluetooth: hci6: unexpected cc 0x0c03 length: 249 > 1 [ 79.400613] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 79.402548] Bluetooth: hci7: unexpected cc 0x0c03 length: 249 > 1 [ 79.404666] Bluetooth: hci6: unexpected cc 0x1003 length: 249 > 9 [ 79.406434] Bluetooth: hci7: unexpected cc 0x1003 length: 249 > 9 [ 79.407671] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 79.410275] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 79.411663] Bluetooth: hci5: unexpected cc 0x1003 length: 249 > 9 [ 79.413684] Bluetooth: hci6: unexpected cc 0x1001 length: 249 > 9 [ 79.417981] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 79.419625] Bluetooth: hci6: unexpected cc 0x0c23 length: 249 > 4 [ 79.422094] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 79.423458] Bluetooth: hci5: unexpected cc 0x1001 length: 249 > 9 [ 79.425447] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 79.428237] Bluetooth: hci7: unexpected cc 0x1001 length: 249 > 9 [ 79.431022] Bluetooth: hci6: unexpected cc 0x0c38 length: 249 > 2 [ 79.460800] Bluetooth: hci7: unexpected cc 0x0c23 length: 249 > 4 [ 79.461416] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 79.463596] Bluetooth: hci5: unexpected cc 0x0c23 length: 249 > 4 [ 79.467283] Bluetooth: hci5: unexpected cc 0x0c38 length: 249 > 2 [ 79.470845] Bluetooth: hci7: unexpected cc 0x0c38 length: 249 > 2 [ 79.479104] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 79.557696] [ 79.558693] ============================= [ 79.559355] WARNING: suspicious RCU usage [ 79.560025] 6.16.0-rc4-next-20250703 #1 Not tainted [ 79.562224] ----------------------------- [ 79.563821] fs/proc/proc_sysctl.c:934 suspicious rcu_dereference_check() usage! [ 79.568538] [ 79.568538] other info that might help us debug this: [ 79.568538] [ 79.569809] [ 79.569809] rcu_scheduler_active = 2, debug_locks = 1 [ 79.570829] 3 locks held by syz-executor.2/285: [ 79.571555] #0: ffff888007100400 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1cd3/0x2880 [ 79.572878] #1: ffff888009352618 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: path_openat+0x1308/0x2880 [ 79.574387] #2: ffff888018507b40 (&lockref->lock){+.+.}-{3:3}, at: d_alloc_parallel+0xf97/0x1330 [ 79.575741] [ 79.575741] stack backtrace: [ 79.576429] CPU: 0 UID: 0 PID: 285 Comm: syz-executor.2 Not tainted 6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) [ 79.576457] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 79.576469] Call Trace: [ 79.576477] [ 79.576485] dump_stack_lvl+0xfa/0x120 [ 79.576523] lockdep_rcu_suspicious+0x152/0x1c0 [ 79.576549] proc_sys_compare+0x28a/0x340 [ 79.576570] ? __pfx_proc_sys_compare+0x10/0x10 [ 79.576593] d_same_name+0x229/0x2e0 [ 79.576629] d_alloc_parallel+0x7c1/0x1330 [ 79.576666] ? __pfx_d_alloc_parallel+0x10/0x10 [ 79.576693] ? __pfx_default_wake_function+0x10/0x10 [ 79.576725] ? __d_lookup+0x25f/0x490 [ 79.576757] lookup_open.isra.0+0x64f/0x1530 [ 79.576790] ? __pfx_lookup_open.isra.0+0x10/0x10 [ 79.576834] ? mnt_get_write_access+0x81/0x2d0 [ 79.576856] ? mnt_get_write_access+0x1ea/0x2d0 [ 79.576886] path_openat+0xc26/0x2880 [ 79.576926] ? __lock_acquire+0x694/0x1b70 [ 79.576954] ? __pfx_path_openat+0x10/0x10 [ 79.576994] do_filp_open+0x1e8/0x450 [ 79.577024] ? __pfx_do_filp_open+0x10/0x10 [ 79.577066] ? find_held_lock+0x2b/0x80 [ 79.577095] ? alloc_fd+0x2c1/0x560 [ 79.577122] ? lock_release+0xc8/0x290 [ 79.577149] ? alloc_fd+0x2c1/0x560 [ 79.577186] do_sys_openat2+0x104/0x1b0 [ 79.577210] ? __pfx_do_sys_openat2+0x10/0x10 [ 79.577236] ? __fput+0x67b/0xb50 [ 79.577265] __x64_sys_openat+0x142/0x200 [ 79.577289] ? __pfx___x64_sys_openat+0x10/0x10 [ 79.577313] ? __pfx_fput_close_sync+0x10/0x10 [ 79.577363] do_syscall_64+0xbf/0x360 [ 79.577387] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.577409] RIP: 0033:0x7ffad8607a04 [ 79.577426] 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 [ 79.577447] RSP: 002b:00007fff4720b2e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 79.577467] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007ffad8607a04 [ 79.577481] RDX: 0000000000080001 RSI: 00007ffad86be29e RDI: 00000000ffffff9c [ 79.577494] RBP: 00007ffad86be29e R08: 0000000000000000 R09: 00007fff4720b2d0 [ 79.577507] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080001 [ 79.577520] R13: 00007fff4720b380 R14: 0000000000000000 R15: 00000000000000f8 [ 79.577549] [ 81.394739] Bluetooth: hci1: command tx timeout [ 81.396246] Bluetooth: hci0: command tx timeout [ 81.459348] Bluetooth: hci6: command tx timeout [ 81.460525] Bluetooth: hci4: command tx timeout [ 81.523019] Bluetooth: hci5: command tx timeout [ 81.524267] Bluetooth: hci3: command tx timeout [ 81.525354] Bluetooth: hci2: command tx timeout [ 81.526654] Bluetooth: hci7: command tx timeout [ 83.442195] Bluetooth: hci1: command tx timeout [ 83.443310] Bluetooth: hci0: command tx timeout [ 83.506308] Bluetooth: hci4: command tx timeout [ 83.507313] Bluetooth: hci6: command tx timeout [ 83.570328] Bluetooth: hci2: command tx timeout [ 83.571172] Bluetooth: hci3: command tx timeout [ 83.571244] Bluetooth: hci7: command tx timeout [ 83.571875] Bluetooth: hci5: command tx timeout [ 85.490026] Bluetooth: hci0: command tx timeout [ 85.490484] Bluetooth: hci1: command tx timeout [ 85.556402] Bluetooth: hci4: command tx timeout [ 85.557510] Bluetooth: hci6: command tx timeout [ 85.620220] Bluetooth: hci5: command tx timeout [ 85.620936] Bluetooth: hci2: command tx timeout [ 85.621746] Bluetooth: hci7: command tx timeout [ 85.622496] Bluetooth: hci3: command tx timeout [ 87.538032] Bluetooth: hci0: command tx timeout [ 87.538495] Bluetooth: hci1: command tx timeout [ 87.602069] Bluetooth: hci6: command tx timeout [ 87.602517] Bluetooth: hci4: command tx timeout [ 87.666140] Bluetooth: hci7: command tx timeout [ 87.666582] Bluetooth: hci3: command tx timeout [ 87.667106] Bluetooth: hci2: command tx timeout [ 87.667485] Bluetooth: hci5: command tx timeout VM DIAGNOSIS: 10:11:30 Registers: info registers vcpu 0 RAX=0000000000000074 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff828b5535 RDI=ffffffff8871ef20 RBP=ffffffff8871eee0 RSP=ffff8880168472b8 R8 =0000000000000000 R9 =ffffed1001353046 R10=0000000000000074 R11=0000000000000001 R12=0000000000000074 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 000055559203b400 00000000 00000000 GS =0000 ffff8880e55f2000 00000000 00000000 LDT=0000 fffffe5100000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffd20a39dc8 CR3=000000003bbc5000 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=ffffffffffffffff0000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff88806cf28080 RCX=ffffffff8151f8e3 RDX=0000000000000000 RSI=0000000000000004 RDI=ffff88806cf28080 RBP=ffff88806cf28088 RSP=ffff88806cf08df0 R8 =0000000000000000 R9 =ffffed100d9e5010 R10=ffff88806cf28083 R11=0000000000000001 R12=ffff88806cf28090 R13=ffff88806cf28100 R14=ffff88806cf28080 R15=dffffc0000000000 RIP=ffffffff8151f9b5 RFL=00000016 [----AP-] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f7628efc900 00000000 00000000 GS =0000 ffff8880e56f2000 00000000 00000000 LDT=0000 fffffe1600000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f762975f309 CR3=000000000d96d000 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=25252525252525252525252525252525 XMM01=000000000000000000000000ff0000ff XMM02=000000000000000000000000ff000000 XMM03=79732f6563696c732e6d65747379732f XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=78614d20736b736154202020000a6925 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000