Bluetooth: hci0: command 0x0401 tx timeout ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.5/4398 is trying to release lock (rcu_read_lock) at: [] __wait_on_freeing_inode+0x105/0x350 but there are no more locks to release! other info that might help us debug this: 4 locks held by syz-executor.5/4398: #0: ffff88800f76e3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888043676cb8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f77a950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe32/0x12d0 #3: ffffffff85c16898 (inode_hash_lock){+.+.}-{3:3}, at: insert_inode_locked+0xf9/0x890 stack backtrace: CPU: 1 UID: 0 PID: 4398 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xca/0x120 print_unlock_imbalance_bug+0x118/0x130 lock_release+0x1ee/0x270 __wait_on_freeing_inode+0x10a/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5af9c83427 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 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:00007ffc4d8968d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5af9c83427 RDX: 00007ffc4d8969b7 RSI: 00007f5af9cde019 RDI: 00007ffc4d8969a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc4d896770 R10: 00007ffc4d896627 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc4d8969a0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.5/4398 Modules linked in: CPU: 1 UID: 0 PID: 4398 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0x25f/0x5c0 Code: f2 02 00 00 c7 43 58 01 00 00 00 bf 09 00 00 00 e8 d6 b7 de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 8a 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 81 4d 74 03 e8 2c 5d 56 00 e9 RSP: 0018:ffff88804b59f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804d823700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88804d823afc RBP: ffff88804d823700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804d823700 R13: 0000000000000001 R14: ffffffff85c0c430 R15: ffff888043658ca0 FS: 00005555755ac400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5af9d03545 CR3: 000000000d2e0000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5af9c83427 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 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:00007ffc4d8968d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5af9c83427 RDX: 00007ffc4d8969b7 RSI: 00007f5af9cde019 RDI: 00007ffc4d8969a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc4d896770 R10: 00007ffc4d896627 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc4d8969a0 irq event stamp: 159 hardirqs last enabled at (159): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (158): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (154): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (152): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1400 audit(1768465415.947:11): avc: denied { read } for pid=4498 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1400 audit(1768465415.956:12): avc: denied { write } for pid=4498 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1326 audit(1768465415.956:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4500 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f214505db19 code=0x0 audit: type=1326 audit(1768465416.787:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4500 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f214505db19 code=0x0 audit: type=1326 audit(1768465416.863:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f214505db19 code=0x0 audit: type=1326 audit(1768465417.752:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4591 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f214505db19 code=0x0 sit: Src spoofed 0.0.0.0/2002:0:63::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:4700:200:eeff:3f00 sit: Src spoofed 0.0.0.0/2002:0:63::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:4700:200:eeff:3f00 sit: Src spoofed 0.0.0.0/2002:0:63::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:4700:200:eeff:3f00 sit: Src spoofed 0.0.0.0/2002:0:63::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:4700:200:eeff:3f00 audit: type=1326 audit(1768465418.683:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4628 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f214505db19 code=0x0 sit: Src spoofed 0.0.0.0/2002:0:63::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:4700:200:eeff:3f00 rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled loop2: detected capacity change from 0 to 128 rfkill: input handler disabled rfkill: input handler enabled Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 rfkill: input handler disabled rfkill: input handler enabled Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: link tx timeout Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa rfkill: input handler disabled rfkill: input handler enabled Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: link tx timeout Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci5: link tx timeout Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci7: link tx timeout Bluetooth: hci7: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci5: link tx timeout Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: link tx timeout Bluetooth: hci0: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci7: link tx timeout Bluetooth: hci7: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci6: link tx timeout Bluetooth: hci6: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: link tx timeout Bluetooth: hci0: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: Unknown BR/EDR signaling command 0x0c Bluetooth: Wrong link type (-22) Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci6: link tx timeout Bluetooth: hci6: killing stalled connection 11:aa:aa:aa:aa:aa Bluetooth: hci5: command 0x0406 tx timeout program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode Bluetooth: hci7: command 0x0406 tx timeout mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode Bluetooth: hci0: command 0x0401 tx timeout mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode mac80211_hwsim hwsim2 wlan0: entered promiscuous mode mac80211_hwsim hwsim4 wlan1: entered promiscuous mode mac80211_hwsim hwsim4 wlan1: left promiscuous mode mac80211_hwsim hwsim2 wlan0: left promiscuous mode mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode mac80211_hwsim hwsim2 wlan0: entered promiscuous mode mac80211_hwsim hwsim4 wlan1: entered promiscuous mode mac80211_hwsim hwsim4 wlan1: left promiscuous mode mac80211_hwsim hwsim2 wlan0: left promiscuous mode mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode mac80211_hwsim hwsim2 wlan0: entered promiscuous mode mac80211_hwsim hwsim4 wlan1: entered promiscuous mode mac80211_hwsim hwsim4 wlan1: left promiscuous mode mac80211_hwsim hwsim2 wlan0: left promiscuous mode Bluetooth: hci6: command 0x0406 tx timeout