Bluetooth: hci7: unexpected event 0x2f length: 763 > 260 ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.4/292 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.4/292: #0: ffff88800f7b83f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801be24698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f7bc950 (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: 292 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260114 #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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc7f43ffc27 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 53 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:00007fff24012618 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff240126a0 RCX: 00007fc7f43ffc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff240126a0 RBP: 00007fff2401267c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff240123b6 R11: 0000000000000206 R12: 0000000000000032 R13: 00000000000a2aa3 R14: 0000000000000007 R15: 00007fff240126e0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/292 Modules linked in: CPU: 1 UID: 0 PID: 292 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff888021f7f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801642b700 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801642bafc RBP: ffff88801642b700 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801642b700 R13: 0000000000000001 R14: ffffffff85c0d8d0 R15: ffff88801be26bf0 FS: 00005555923b2400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc35efe83a4 CR3: 00000000109e9000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc7f43ffc27 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 53 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:00007fff24012618 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff240126a0 RCX: 00007fc7f43ffc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff240126a0 RBP: 00007fff2401267c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff240123b6 R11: 0000000000000206 R12: 0000000000000032 R13: 00000000000a2aa3 R14: 0000000000000007 R15: 00007fff240126e0 irq event stamp: 636775 hardirqs last enabled at (636775): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (636774): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (636770): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (636768): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6379 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260114 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_noprof+0xd6/0x830 genl_family_rcv_msg_attrs_parse.constprop.0+0xdb/0x290 genl_start+0x18f/0x960 __netlink_dump_start+0x5fd/0x980 genl_family_rcv_msg_dumpit+0x1b6/0x2b0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 genl_rcv_msg+0x447/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa38/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3402daeb19 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:00007f3400324188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3402ec1f60 RCX: 00007f3402daeb19 RDX: 0000000000000000 RSI: 0000000020002040 RDI: 0000000000000003 RBP: 00007f34003241d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdac3a47bf R14: 00007f3400324300 R15: 0000000000022000 CPU: 0 UID: 0 PID: 6380 Comm: syz-executor.7 Tainted: G W 6.19.0-rc5-next-20260114 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_noprof+0xd6/0x830 ethnl_perphy_start+0x109/0x400 genl_start+0x5f5/0x960 __netlink_dump_start+0x5fd/0x980 genl_family_rcv_msg_dumpit+0x1b6/0x2b0 genl_rcv_msg+0x447/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa38/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc35df9bb19 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:00007fc35b511188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc35e0aef60 RCX: 00007fc35df9bb19 RDX: 0000000000000000 RSI: 0000000020002040 RDI: 0000000000000003 RBP: 00007fc35b5111d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffdf336a4af R14: 00007fc35b511300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6391 Comm: syz-executor.3 Tainted: G W 6.19.0-rc5-next-20260114 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_noprof+0xd6/0x830 genl_family_rcv_msg_attrs_parse.constprop.0+0xdb/0x290 genl_start+0x18f/0x960 __netlink_dump_start+0x5fd/0x980 genl_family_rcv_msg_dumpit+0x1b6/0x2b0 genl_rcv_msg+0x447/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa38/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4669268b19 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:00007f46667de188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f466937bf60 RCX: 00007f4669268b19 RDX: 0000000000000000 RSI: 0000000020002040 RDI: 0000000000000003 RBP: 00007f46667de1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffef0f0470f R14: 00007f46667de300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6397 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260114 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_noprof+0xd6/0x830 ethnl_perphy_start+0x109/0x400 genl_start+0x5f5/0x960 __netlink_dump_start+0x5fd/0x980 genl_family_rcv_msg_dumpit+0x1b6/0x2b0 genl_rcv_msg+0x447/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa38/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3402daeb19 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:00007f3400324188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3402ec1f60 RCX: 00007f3402daeb19 RDX: 0000000000000000 RSI: 0000000020002040 RDI: 0000000000000003 RBP: 00007f34003241d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdac3a47bf R14: 00007f3400324300 R15: 0000000000022000 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout