===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.7/289 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.7/289: #0: ffff88800fec23f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801ad23388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fec6950 (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: 289 Comm: syz-executor.7 Not tainted 6.19.0-rc5-next-20260115 #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: 0033:0x7f3dbf680c27 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:00007ffd54a88a18 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd54a88aa0 RCX: 00007f3dbf680c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd54a88aa0 RBP: 00007ffd54a88a7c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd54a887b6 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000001e5df R14: 0000000000000004 R15: 00007ffd54a88ae0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.7/289 Modules linked in: CPU: 0 UID: 0 PID: 289 Comm: syz-executor.7 Not tainted 6.19.0-rc5-next-20260115 #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:ffff88801b4e79e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888014951b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888014951f7c RBP: ffff888014951b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888014951b80 R13: 0000000000000001 R14: ffffffff85c0f180 R15: ffff888044d8ebf0 FS: 000055555bd0d400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555bd16c58 CR3: 000000000b068000 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: 0033:0x7f3dbf680c27 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:00007ffd54a88a18 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd54a88aa0 RCX: 00007f3dbf680c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd54a88aa0 RBP: 00007ffd54a88a7c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd54a887b6 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000001e5df R14: 0000000000000004 R15: 00007ffd54a88ae0 irq event stamp: 291511 hardirqs last enabled at (291511): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (291510): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (291506): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (291504): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- cgroup: Unknown subsys name 'cpuset' loop0: detected capacity change from 0 to 732 cgroup: Unknown subsys name 'cpuset' cgroup: Unknown subsys name 'cpuset' cgroup: Unknown subsys name 'cpuset' UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. mac80211_hwsim hwsim11 wlan1: entered promiscuous mode EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. mac80211_hwsim hwsim11 wlan1: left promiscuous mode mac80211_hwsim hwsim11 wlan1: entered promiscuous mode mac80211_hwsim hwsim11 wlan1: left promiscuous mode loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. mac80211_hwsim hwsim11 wlan1: entered promiscuous mode mac80211_hwsim hwsim11 wlan1: left promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim11 wlan1: entered promiscuous mode mac80211_hwsim hwsim11 wlan1: left promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode mac80211_hwsim hwsim11 wlan1: entered promiscuous mode mac80211_hwsim hwsim11 wlan1: left promiscuous mode mac80211_hwsim hwsim8 wlan1: entered promiscuous mode mac80211_hwsim hwsim8 wlan1: left promiscuous mode Invalid option length (1048186) for dns_resolver key Option ' ' to dns_resolver key: bad/missing value Invalid option length (1048186) for dns_resolver key Option ' ' to dns_resolver key: bad/missing value Invalid option length (1048186) for dns_resolver key Option ' ' to dns_resolver key: bad/missing value Bluetooth: hci7: command 0x0405 tx timeout Bluetooth: hci0: ACL packet for unknown connection handle 201 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. Invalid option length (1048186) for dns_resolver key Bluetooth: hci0: ACL packet for unknown connection handle 201 Option ' ' to dns_resolver key: bad/missing value netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. Bluetooth: hci0: ACL packet for unknown connection handle 201 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. Bluetooth: hci0: ACL packet for unknown connection handle 201 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. Bluetooth: hci0: ACL packet for unknown connection handle 201 Bluetooth: hci5: link tx timeout Bluetooth: hci5: killing stalled connection 10:aa:aa:aa:aa:aa Bluetooth: hci2: link tx timeout Bluetooth: hci2: killing stalled connection 10:aa:aa:aa:aa:aa loop2: detected capacity change from 0 to 4 EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! EXT4-fs (loop2): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop2): Unsupported encryption level 125 loop2: detected capacity change from 0 to 4 EXT4-fs (loop2): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop2): Unsupported encryption level 125 No control pipe specified No control pipe specified loop2: detected capacity change from 0 to 4 EXT4-fs (loop2): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop2): Unsupported encryption level 125 loop2: detected capacity change from 0 to 4 EXT4-fs (loop2): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop2): Unsupported encryption level 125 No control pipe specified No control pipe specified No control pipe specified random: crng reseeded on system resumption kauditd_printk_skb: 24 callbacks suppressed audit: type=1400 audit(1768465846.352:44): avc: denied { read } for pid=5412 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 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. random: crng reseeded on system resumption netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. random: crng reseeded on system resumption random: crng reseeded on system resumption netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout loop6: detected capacity change from 0 to 3 FAT-fs (loop6): bread failed, FSINFO block (sector = 237) loop6: detected capacity change from 0 to 3 FAT-fs (loop6): bread failed, FSINFO block (sector = 237) loop6: detected capacity change from 0 to 3 FAT-fs (loop6): bread failed, FSINFO block (sector = 237) loop2: detected capacity change from 0 to 512 tmpfs: Bad value for 'mpol' EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir644697742/syzkaller.CMc7Y5/108/file0 supports timestamps until 2038-01-19 (0x7fffffff) tmpfs: Bad value for 'mpol' EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 3 FAT-fs (loop6): bread failed, FSINFO block (sector = 237) loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir644697742/syzkaller.CMc7Y5/109/file0 supports timestamps until 2038-01-19 (0x7fffffff) tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000.