===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.6/283 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.6/283: #0: ffff88800f7343f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801c4c8d68 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f7f0950 (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: 283 Comm: syz-executor.6 Not tainted 6.19.0-rc5-next-20260113 #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: 0033:0x7f01ad8b5c27 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:00007ffc0b9eb908 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc0b9eb990 RCX: 00007f01ad8b5c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc0b9eb990 RBP: 00007ffc0b9eb96c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffc0b9eb6a6 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002161d R14: 0000000000000002 R15: 00007ffc0b9eb9d0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.6/283 Modules linked in: CPU: 0 UID: 0 PID: 283 Comm: syz-executor.6 Not tainted 6.19.0-rc5-next-20260113 #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 a6 bb de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 89 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 61 f9 73 03 e8 0c 88 56 00 e9 RSP: 0018:ffff88801af379e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801bc58000 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801bc583fc RBP: ffff88801bc58000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801bc58000 R13: 0000000000000001 R14: ffffffff85c0e1e0 R15: ffff88801c56cf58 FS: 00005555694eb400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffefbc8eff8 CR3: 000000000db0a000 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: 0033:0x7f01ad8b5c27 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:00007ffc0b9eb908 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc0b9eb990 RCX: 00007f01ad8b5c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc0b9eb990 RBP: 00007ffc0b9eb96c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffc0b9eb6a6 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002161d R14: 0000000000000002 R15: 00007ffc0b9eb9d0 irq event stamp: 338543 hardirqs last enabled at (338543): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (338542): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (338538): [] do_softirq+0x48/0x80 softirqs last disabled at (338073): [] do_softirq+0x48/0x80 ---[ end trace 0000000000000000 ]--- loop3: detected capacity change from 0 to 512 EXT4-fs error (device loop3): __ext4_fill_super:5553: inode #2: comm syz-executor.3: iget: special inode unallocated EXT4-fs (loop3): get root inode failed EXT4-fs (loop3): mount failed loop3: detected capacity change from 0 to 512 EXT4-fs error (device loop3): __ext4_fill_super:5553: inode #2: comm syz-executor.3: iget: special inode unallocated EXT4-fs (loop3): get root inode failed EXT4-fs (loop3): mount failed loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. set_capacity_and_notify: 1 callbacks suppressed loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. Bluetooth: hci3: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: SCO packet for unknown connection handle 205 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. Bluetooth: hci3: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: SCO packet for unknown connection handle 205 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. Bluetooth: hci3: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: SCO packet for unknown connection handle 205 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci2: SCO packet for unknown connection handle 205 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. Bluetooth: hci3: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: SCO packet for unknown connection handle 205 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci2: SCO packet for unknown connection handle 205 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci3: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci3: SCO packet for unknown connection handle 205 Bluetooth: hci2: SCO packet for unknown connection handle 205 autofs4:pid:4978:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4978:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) autofs4:pid:4978:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4978:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) autofs4:pid:4996:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4996:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) autofs4:pid:5017:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:5017:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): Can't read superblock on 2nd try loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): Can't read superblock on 2nd try autofs4:pid:5033:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:5033:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): Can't read superblock on 2nd try loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): Can't read superblock on 2nd try loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): Can't read superblock on 2nd try program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs warning (device sda): ext4_group_extend:1862: can't shrink FS - resize aborted program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs warning (device sda): ext4_group_extend:1862: can't shrink FS - resize aborted EXT4-fs warning (device sda): ext4_group_extend:1862: can't shrink FS - resize aborted EXT4-fs warning (device sda): ext4_group_extend:1862: can't shrink FS - resize aborted audit: type=1326 audit(1768294844.392:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5248 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dd3580b19 code=0x0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.0'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 syz-executor.4 (5283) used greatest stack depth: 22896 bytes left audit: type=1326 audit(1768294845.221:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5248 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dd3580b19 code=0x0 audit: type=1326 audit(1768294845.284:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5296 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dd3580b19 code=0x0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.0'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 Bluetooth: hci3: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci3: Injecting HCI hardware error event Bluetooth: hci3: hardware error 0x00 audit: type=1326 audit(1768294845.413:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5313 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc31aa56b19 code=0x0 Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 audit: type=1326 audit(1768294846.328:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5325 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dd3580b19 code=0x0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1326 audit(1768294846.356:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5336 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc31aa56b19 code=0x0 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 audit: type=1326 audit(1768294847.216:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5365 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dd3580b19 code=0x0 audit: type=1326 audit(1768294847.224:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5370 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc31aa56b19 code=0x0 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 loop4: detected capacity change from 0 to 184 isofs_fill_super: root inode is not a directory. Corrupted media? loop4: detected capacity change from 0 to 184 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 isofs_fill_super: root inode is not a directory. Corrupted media? Bluetooth: hci3: Opcode 0x0c03 failed: -110 loop4: detected capacity change from 0 to 184 isofs_fill_super: root inode is not a directory. Corrupted media? loop4: detected capacity change from 0 to 184 isofs_fill_super: root inode is not a directory. Corrupted media? Bluetooth: hci2: Opcode 0x0c03 failed: -110 loop4: detected capacity change from 0 to 184 isofs_fill_super: root inode is not a directory. Corrupted media? SELinux: Context system_u:object_r:ipmi_device_t:s is not valid (left unmapped). program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO