===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.7/4069 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.7/4069: #0: ffff88800f9803f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888049b0d020 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f984950 (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: 4069 Comm: syz-executor.7 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: 0033:0x7fe4277f3427 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:00007ffebc78c6a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe4277f3427 RDX: 00007ffebc78c787 RSI: 00007fe42784e019 RDI: 00007ffebc78c770 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffebc78c540 R10: 00007ffebc78c3f7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffebc78c770 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.7/4069 Modules linked in: CPU: 0 UID: 0 PID: 4069 Comm: syz-executor.7 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:ffff88804aeaf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804ae63700 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88804ae63afc RBP: ffff88804ae63700 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804ae63700 R13: 0000000000000001 R14: ffffffff85c102b0 R15: ffff888049a8bc48 FS: 000055556e945400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe427873547 CR3: 000000001f224000 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: 0033:0x7fe4277f3427 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:00007ffebc78c6a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe4277f3427 RDX: 00007ffebc78c787 RSI: 00007fe42784e019 RDI: 00007ffebc78c770 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffebc78c540 R10: 00007ffebc78c3f7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffebc78c770 irq event stamp: 207 hardirqs last enabled at (207): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (206): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (200): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (198): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 1024 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop6: detected capacity change from 0 to 1024 ======================================================= 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. ======================================================= EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 1024 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. syz-executor.1 (4183): /proc/4177/oom_adj is deprecated, please use /proc/4177/oom_score_adj instead. mmap: syz-executor.1 (4200): VmData 37388288 exceed data ulimit 0. Update limits or use boot option ignore_rlimit_data. netlink: 'syz-executor.4': attribute type 4 has an invalid length. EXT4-fs (sda): Can't modify superblock whileperforming online resize No source specified No source specified netlink: 16 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.7'. ref_ctr_offset mismatch. inode: 0x3e7e offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 loop6: detected capacity change from 0 to 63 ref_ctr_offset mismatch. inode: 0x3e96 offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci6: link tx timeout Bluetooth: hci6: killing stalled connection 11:aa:aa:aa:aa:aa ref_ctr_offset mismatch. inode: 0x3e8f offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 ref_ctr_offset mismatch. inode: 0x3e7a offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 syz-executor.3 uses obsolete (PF_INET,SOCK_PACKET) audit: type=1400 audit(1768384343.050:10): avc: denied { read } for pid=4585 comm="syz-executor.7" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop7: detected capacity change from 0 to 63 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1400 audit(1768384344.133:11): avc: denied { write } for pid=4657 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1