cgroup: No subsys list or none specified ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.6/287 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.6/287: #0: ffff88800ee883f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b9a2a00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800ee62950 (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: 287 Comm: syz-executor.6 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: 0033:0x7f6282376c27 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:00007ffd37ed2768 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd37ed27f0 RCX: 00007f6282376c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd37ed27f0 RBP: 00007ffd37ed27cc R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd37ed2506 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000020729 R14: 0000000000000002 R15: 00007ffd37ed2830 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.6/287 Modules linked in: CPU: 1 UID: 0 PID: 287 Comm: syz-executor.6 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:ffff88801b7679e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f681b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800f681f7c RBP: ffff88800f681b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f681b80 R13: 0000000000000001 R14: ffffffff85c0d650 R15: ffff88801b8e0ca0 FS: 00005555572ef400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cc24000 CR3: 000000000ddad000 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: 0033:0x7f6282376c27 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:00007ffd37ed2768 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd37ed27f0 RCX: 00007f6282376c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd37ed27f0 RBP: 00007ffd37ed27cc R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd37ed2506 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000020729 R14: 0000000000000002 R15: 00007ffd37ed2830 irq event stamp: 221833 hardirqs last enabled at (221833): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (221832): [] sysvec_call_function_single+0x18/0xc0 softirqs last enabled at (221826): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (221824): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- cgroup: No subsys list or none specified syz-executor.5 (4453) used greatest stack depth: 24032 bytes left syz-executor.5 (4517) used greatest stack depth: 23992 bytes left kauditd_printk_skb: 3 callbacks suppressed audit: type=1400 audit(1768575761.310:21): avc: denied { write } for pid=4533 comm="syz-executor.3" 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(1768575761.657:22): avc: denied { read } for pid=4574 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 autofs4:pid:4583:validate_dev_ioctl: path string terminator missing for cmd(0xc0189375) autofs4:pid:4583:validate_dev_ioctl: path string terminator missing for cmd(0xc0189375) UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 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.0 (4661) used greatest stack depth: 22320 bytes left faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. 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 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list set_capacity_and_notify: 9 callbacks suppressed loop6: detected capacity change from 0 to 6 FAT-fs (loop6): Directory bread(block 6) failed netlink: 'syz-executor.5': attribute type 33 has an invalid length. netlink: 'syz-executor.5': attribute type 33 has an invalid length. program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (0/1) program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (6656/1) 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 : 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 blk_print_req_error: 9 callbacks suppressed I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 31 prio class 2 audit: type=1326 audit(1768575766.372:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5032 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7faf660d3b19 code=0x0 audit: type=1326 audit(1768575767.204:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5032 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7faf660d3b19 code=0x0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'. audit: type=1400 audit(1768575768.323:25): avc: denied { block_suspend } for pid=5184 comm="syz-executor.6" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 netlink: 40 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.3'. loop4: detected capacity change from 0 to 128