===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.0/279 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.0/279: #0: ffff88800f7483f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801ad70d68 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f74c950 (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: 279 Comm: syz-executor.0 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: 0033:0x7ffbf1a0ac27 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:00007ffc0f103738 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc0f1037c0 RCX: 00007ffbf1a0ac27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc0f1037c0 RBP: 00007ffc0f10379c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffc0f1034d6 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000026ce9 R14: 0000000000000003 R15: 00007ffc0f103800 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.0/279 Modules linked in: CPU: 1 UID: 0 PID: 279 Comm: syz-executor.0 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:ffff88801b33f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b2d5280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801b2d567c RBP: ffff88801b2d5280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b2d5280 R13: 0000000000000001 R14: ffffffff85c0f680 R15: ffff88804a136bf0 FS: 000055557adf2400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc0f101ef8 CR3: 000000000db44000 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: 0033:0x7ffbf1a0ac27 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:00007ffc0f103738 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc0f1037c0 RCX: 00007ffbf1a0ac27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc0f1037c0 RBP: 00007ffc0f10379c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffc0f1034d6 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000026ce9 R14: 0000000000000003 R15: 00007ffc0f103800 irq event stamp: 536153 hardirqs last enabled at (536153): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (536152): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (536148): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (536146): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) cgroup: none used incorrectly cgroup: none used incorrectly ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= cgroup: none used incorrectly cgroup: none used incorrectly cgroup: none used incorrectly tmpfs: Unknown parameter './file0' program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1400 audit(1768298352.943:25): avc: denied { watch_reads } for pid=5878 comm="syz-executor.1" path="/syzkaller-testdir364605117/syzkaller.qnryqX/103" dev="sda" ino=15987 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 ALSA: seq fatal error: cannot create timer (-22) ALSA: seq fatal error: cannot create timer (-22) UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list ALSA: seq fatal error: cannot create timer (-22) ALSA: seq fatal error: cannot create timer (-22) ALSA: seq fatal error: cannot create timer (-22) Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected event for opcode 0x2029 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: SCO packet for unknown connection handle 201 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci1: SCO packet for unknown connection handle 200 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected event for opcode 0x2029 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: SCO packet for unknown connection handle 201 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci1: SCO packet for unknown connection handle 200 Bluetooth: hci0: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci0: unexpected event for opcode 0x2029 Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: SCO packet for unknown connection handle 201 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: SCO packet for unknown connection handle 200 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected event for opcode 0x2029 Bluetooth: hci6: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci6: unexpected event for opcode 0x2029 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: unexpected event for opcode 0x2029 Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: SCO packet for unknown connection handle 201 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci6: SCO packet for unknown connection handle 200 Bluetooth: hci1: SCO packet for unknown connection handle 201 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci1: SCO packet for unknown connection handle 200 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci0: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci0: unexpected event for opcode 0x2029 Bluetooth: hci6: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci6: unexpected event for opcode 0x2029 Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci0: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci0: unexpected event for opcode 0x2029 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected event for opcode 0x2029 Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: unexpected event for opcode 0x2029 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci6: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci6: unexpected event for opcode 0x2029 Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected event for opcode 0x2029 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: unexpected event for opcode 0x2029 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci0: Error when powering off device on rfkill (-4) Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Error when powering off device on rfkill (-4) Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Error when powering off device on rfkill (-4) Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Error when powering off device on rfkill (-4) Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Error when powering off device on rfkill (-4) Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Error when powering off device on rfkill (-4) Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Error when powering off device on rfkill (-4) Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Error when powering off device on rfkill (-4) Bluetooth: hci0: Opcode 0x0401 failed: -22 Bluetooth: hci0: Opcode 0x0401 failed: -22 audit: type=1326 audit(1768298356.489:26): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6100 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c212afb19 code=0x0 Bluetooth: hci0: Opcode 0x0401 failed: -22 audit: type=1326 audit(1768298356.598:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6100 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c212afb19 code=0x0 Bluetooth: hci0: Opcode 0x0401 failed: -22 audit: type=1326 audit(1768298357.573:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6131 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c212afb19 code=0x0 audit: type=1326 audit(1768298357.586:29): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6134 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f082e295b19 code=0x0 audit: type=1326 audit(1768298357.762:30): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6142 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c212afb19 code=0x0 audit: type=1326 audit(1768298357.845:31): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6148 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f082e295b19 code=0x0 netlink: 64 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 64 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1326 audit(1768298358.086:32): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6158 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c212afb19 code=0x0 audit: type=1326 audit(1768298358.101:33): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6157 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f082e295b19 code=0x0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=6176 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=6179 comm=syz-executor.2 netlink: 64 bytes leftover after parsing attributes in process `syz-executor.4'.