===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.4/278 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.4/278: #0: ffff88800f7723f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880189a2078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f776950 (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: 278 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260116 #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 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8c65b82c27 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:00007ffdb4805a68 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffdb4805af0 RCX: 00007f8c65b82c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffdb4805af0 RBP: 00007ffdb4805acc R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffdb4805806 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001ba67 R14: 0000000000000002 R15: 00007ffdb4805b30 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/278 Modules linked in: CPU: 1 UID: 0 PID: 278 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260116 #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:ffff88800f66f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f5db700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800f5dbafc RBP: ffff88800f5db700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f5db700 R13: 0000000000000001 R14: ffffffff85c10990 R15: ffff8880455ebc48 FS: 000055556f273400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555560437c98 CR3: 000000001cbc1000 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 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8c65b82c27 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:00007ffdb4805a68 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffdb4805af0 RCX: 00007f8c65b82c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffdb4805af0 RBP: 00007ffdb4805acc R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffdb4805806 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001ba67 R14: 0000000000000002 R15: 00007ffdb4805b30 irq event stamp: 298599 hardirqs last enabled at (298599): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (298598): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (298594): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (298592): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs: Invalid want_extra_isize 0 EXT4-fs: Invalid want_extra_isize 0 EXT4-fs: Invalid want_extra_isize 0 syz-executor.0 (4584) used greatest stack depth: 23480 bytes left EXT4-fs: Invalid want_extra_isize 0 EXT4-fs: Invalid want_extra_isize 0 audit: type=1400 audit(1768573093.936:12): avc: denied { block_suspend } for pid=4635 comm="syz-executor.3" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 Process accounting resumed Process accounting resumed Process accounting resumed Process accounting resumed Process accounting resumed Process accounting resumed Process accounting resumed Process accounting resumed audit: type=1326 audit(1768573098.610:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f22689e2b19 code=0x7ffc0000 audit: type=1326 audit(1768573098.612:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=83 compat=0 ip=0x7f22689e1c27 code=0x7ffc0000 audit: type=1326 audit(1768573098.612:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=165 compat=0 ip=0x7f22689e404a code=0x7ffc0000 audit: type=1326 audit(1768573098.614:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7f2268995a04 code=0x7ffc0000 audit: type=1326 audit(1768573098.614:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f22689e2b19 code=0x7ffc0000 audit: type=1326 audit(1768573098.620:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=155 compat=0 ip=0x7f22689e2b19 code=0x7ffc0000 audit: type=1326 audit(1768573098.620:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f22689e2b19 code=0x7ffc0000 audit: type=1326 audit(1768573098.620:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f22689e2b19 code=0x7ffc0000 audit: type=1326 audit(1768573098.623:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4832 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f22689e2b19 code=0x7ffc0000 kauditd_printk_skb: 32 callbacks suppressed audit: type=1326 audit(1768573099.050:54): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4887 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c65b83b19 code=0x0 process 'syz-executor.5' launched './file1' with NULL argv: empty string added audit: type=1326 audit(1768573099.202:55): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4904 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c65b83b19 code=0x0 audit: type=1326 audit(1768573099.333:56): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4932 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8c65b83b19 code=0x0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 20 00 critical target error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 16 prio class 2 kernel read not supported for file /rfkill (pid: 41 comm: kworker/1:1) kernel read not supported for file /rfkill (pid: 59 comm: kworker/0:2) kernel read not supported for file /rfkill (pid: 41 comm: kworker/1:1) 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 20 00 critical target error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 16 prio class 2 kernel read not supported for file /rfkill (pid: 59 comm: kworker/0:2) 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 20 00 critical target error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 16 prio class 2 kernel read not supported for file /rfkill (pid: 23 comm: kworker/1:0) netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. ======================================================= 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. ======================================================= netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 20 00 critical target error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 16 prio class 2 Bluetooth: unknown link type 30 Bluetooth: hci4: connection err: -111 audit: type=1400 audit(1768573101.851:57): avc: denied { write } for pid=5349 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 Bluetooth: hci4: hardware error 0x08 Bluetooth: unknown link type 30 Bluetooth: hci4: connection err: -111 Bluetooth: unknown link type 30 Bluetooth: hci2: connection err: -111 Bluetooth: hci2: hardware error 0x08 loop0: detected capacity change from 0 to 16383 Bluetooth: unknown link type 30 Bluetooth: hci4: connection err: -111 Bluetooth: unknown link type 30 Bluetooth: hci4: connection err: -111 Bluetooth: unknown link type 30 Bluetooth: hci2: connection err: -111 loop0: detected capacity change from 0 to 16383 Bluetooth: unknown link type 30 Bluetooth: hci1: connection err: -111 Bluetooth: hci1: hardware error 0x08 loop1: detected capacity change from 0 to 16383 Bluetooth: unknown link type 30 Bluetooth: hci2: connection err: -111 loop0: detected capacity change from 0 to 16383