===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.2/3988 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.2/3988: #0: ffff88800f6763f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88805217ecb8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fad2950 (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: 0 UID: 0 PID: 3988 Comm: syz-executor.2 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_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f276efac427 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:00007ffc12c350c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f276efac427 RDX: 00007ffc12c351a3 RSI: 00007f276f00702f RDI: 00007ffc12c35190 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc12c34f60 R10: 00007ffc12c34e17 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc12c35190 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/3988 Modules linked in: CPU: 0 UID: 0 PID: 3988 Comm: syz-executor.2 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:ffff888051d9f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88805350b700 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88805350bafc RBP: ffff88805350b700 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88805350b700 R13: 0000000000000001 R14: ffffffff85c0eaf0 R15: ffff888052180318 FS: 0000555566527400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe88a10c38 CR3: 0000000052b94000 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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f276efac427 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:00007ffc12c350c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f276efac427 RDX: 00007ffc12c351a3 RSI: 00007f276f00702f RDI: 00007ffc12c35190 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc12c34f60 R10: 00007ffc12c34e17 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc12c35190 irq event stamp: 475 hardirqs last enabled at (475): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (474): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (470): [] do_softirq+0x48/0x80 softirqs last disabled at (391): [] do_softirq+0x48/0x80 ---[ end trace 0000000000000000 ]--- perf: interrupt took too long (3980 > 3972), lowering kernel.perf_event_max_sample_rate to 50000 perf: interrupt took too long (4987 > 4975), lowering kernel.perf_event_max_sample_rate to 40000 perf: interrupt took too long (6247 > 6233), lowering kernel.perf_event_max_sample_rate to 32000 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium process 'syz-executor.6' launched './file1' with NULL argv: empty string added UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list Bluetooth: hci7: unexpected event 0x3e length: 431 > 260 Bluetooth: hci7: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci7: Malformed LE Event: 0x0d Bluetooth: hci7: unexpected event 0x3e length: 431 > 260 Bluetooth: hci7: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci7: Malformed LE Event: 0x0d audit: type=1400 audit(1768380984.873:10): avc: denied { read } for pid=4286 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 audit: type=1400 audit(1768380984.929:11): avc: denied { write } for pid=4286 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 mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode Process accounting resumed Process accounting resumed mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode Process accounting resumed mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode Process accounting resumed mac80211_hwsim hwsim6 wlan0: entered promiscuous mode mac80211_hwsim hwsim6 wlan0: left promiscuous mode Process accounting resumed audit: type=1400 audit(1768380987.127:12): avc: denied { watch_reads } for pid=4524 comm="syz-executor.6" path="/syzkaller-testdir054074400/syzkaller.Mkuz1y/38" dev="sda" ino=15990 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x01 length: 430 > 18 Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x01 length: 430 > 18 debugfs: '0' already exists in 'hci3' sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci3/hci3:0' CPU: 1 UID: 0 PID: 292 Comm: kworker/u11:2 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 Workqueue: hci3 hci_rx_work Call Trace: dump_stack_lvl+0xfa/0x120 sysfs_warn_dup+0x80/0xa0 sysfs_create_dir_ns+0x23b/0x2a0 kobject_add_internal+0x24c/0x9a0 kobject_add+0x157/0x240 device_add+0x32d/0x1830 hci_conn_add_sysfs+0x117/0x1c0 le_conn_complete_evt+0x1246/0x1e40 hci_le_conn_complete_evt+0x22a/0x2c0 hci_le_meta_evt+0x34b/0x530 hci_event_packet+0x66c/0x10e0 hci_rx_work+0x65b/0x8b0 process_one_work+0x8e1/0x1960 worker_thread+0x67e/0xe90 kthread+0x385/0x490 ret_from_fork+0x67a/0x7a0 ret_from_fork_asm+0x1a/0x30 kobject: kobject_add_internal failed for hci3:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci3: failed to register connection device Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x01 length: 430 > 18 debugfs: '0' already exists in 'hci3' sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci3/hci3:0' CPU: 1 UID: 0 PID: 292 Comm: kworker/u11:2 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 Workqueue: hci3 hci_rx_work Call Trace: dump_stack_lvl+0xfa/0x120 sysfs_warn_dup+0x80/0xa0 sysfs_create_dir_ns+0x23b/0x2a0 kobject_add_internal+0x24c/0x9a0 kobject_add+0x157/0x240 device_add+0x32d/0x1830 hci_conn_add_sysfs+0x117/0x1c0 le_conn_complete_evt+0x1246/0x1e40 hci_le_conn_complete_evt+0x22a/0x2c0 hci_le_meta_evt+0x34b/0x530 hci_event_packet+0x66c/0x10e0 hci_rx_work+0x65b/0x8b0 process_one_work+0x8e1/0x1960 worker_thread+0x67e/0xe90 kthread+0x385/0x490 ret_from_fork+0x67a/0x7a0 ret_from_fork_asm+0x1a/0x30 kobject: kobject_add_internal failed for hci3:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci3: failed to register connection device sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 2, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 3, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 4, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 5, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 6, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 7, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x01 length: 430 > 18 debugfs: '0' already exists in 'hci3' sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci3/hci3:0' CPU: 1 UID: 0 PID: 292 Comm: kworker/u11:2 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 Workqueue: hci3 hci_rx_work Call Trace: dump_stack_lvl+0xfa/0x120 sysfs_warn_dup+0x80/0xa0 sysfs_create_dir_ns+0x23b/0x2a0 kobject_add_internal+0x24c/0x9a0 kobject_add+0x157/0x240 device_add+0x32d/0x1830 hci_conn_add_sysfs+0x117/0x1c0 le_conn_complete_evt+0x1246/0x1e40 hci_le_conn_complete_evt+0x22a/0x2c0 hci_le_meta_evt+0x34b/0x530 hci_event_packet+0x66c/0x10e0 hci_rx_work+0x65b/0x8b0 process_one_work+0x8e1/0x1960 worker_thread+0x67e/0xe90 kthread+0x385/0x490 ret_from_fork+0x67a/0x7a0 ret_from_fork_asm+0x1a/0x30 Buffer I/O error on dev sr0, logical block 0, async page read kobject: kobject_add_internal failed for hci3:0 with -EEXIST, don't try to register things with the same name in the same directory. sr 1:0:0:0: [sr0] tag#0 unaligned transfer Bluetooth: hci3: failed to register connection device Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x01 length: 430 > 18 debugfs: '0' already exists in 'hci3' sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci3/hci3:0' CPU: 1 UID: 0 PID: 292 Comm: kworker/u11:2 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 Workqueue: hci3 hci_rx_work Call Trace: dump_stack_lvl+0xfa/0x120 sysfs_warn_dup+0x80/0xa0 sysfs_create_dir_ns+0x23b/0x2a0 kobject_add_internal+0x24c/0x9a0 kobject_add+0x157/0x240 device_add+0x32d/0x1830 hci_conn_add_sysfs+0x117/0x1c0 le_conn_complete_evt+0x1246/0x1e40 hci_le_conn_complete_evt+0x22a/0x2c0 hci_le_meta_evt+0x34b/0x530 hci_event_packet+0x66c/0x10e0 hci_rx_work+0x65b/0x8b0 process_one_work+0x8e1/0x1960 worker_thread+0x67e/0xe90 kthread+0x385/0x490 ret_from_fork+0x67a/0x7a0 ret_from_fork_asm+0x1a/0x30 kobject: kobject_add_internal failed for hci3:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci3: failed to register connection device sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer loop2: detected capacity change from 0 to 1300 loop2: detected capacity change from 0 to 1300 loop2: detected capacity change from 0 to 1300 loop2: detected capacity change from 0 to 1300 Bluetooth: hci3: command 0x2016 tx timeout Bluetooth: hci3: command 0x2016 tx timeout UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list