===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.1/4043 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.1/4043: #0: ffff88800fb8c3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888049662078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fb98950 (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: 4043 Comm: syz-executor.1 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_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb63b036427 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:00007ffcda7f19d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb63b036427 RDX: 00007ffcda7f1ab7 RSI: 00007fb63b091019 RDI: 00007ffcda7f1aa0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcda7f1870 R10: 00007ffcda7f1727 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcda7f1aa0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/4043 Modules linked in: CPU: 1 UID: 0 PID: 4043 Comm: syz-executor.1 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:ffff888048cff9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888015eb0000 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888015eb03fc RBP: ffff888015eb0000 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888015eb0000 R13: 0000000000000001 R14: ffffffff85c0cb60 R15: ffff88801bef45d0 FS: 000055555c3b9400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb63b0b6541 CR3: 0000000048632000 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 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb63b036427 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:00007ffcda7f19d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb63b036427 RDX: 00007ffcda7f1ab7 RSI: 00007fb63b091019 RDI: 00007ffcda7f1aa0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcda7f1870 R10: 00007ffcda7f1727 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcda7f1aa0 irq event stamp: 163 hardirqs last enabled at (163): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (162): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (158): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (156): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all ======================================================= 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 (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. audit: type=1107 audit(1768577534.980:11): pid=4123 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='©' audit: type=1107 audit(1768577534.989:12): pid=4123 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='©' EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. audit: type=1107 audit(1768577535.069:13): pid=4140 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='©' audit: type=1107 audit(1768577535.179:14): pid=4159 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='©' audit: type=1107 audit(1768577535.337:15): pid=4183 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='©' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4220 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4220 comm=syz-executor.5 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. syz-executor.7 (4242) used greatest stack depth: 22896 bytes left syz-executor.0 (4246) used greatest stack depth: 22128 bytes left loop4: detected capacity change from 0 to 512 random: crng reseeded on system resumption EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. random: crng reseeded on system resumption EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. random: crng reseeded on system resumption loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. random: crng reseeded on system resumption random: crng reseeded on system resumption loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. random: crng reseeded on system resumption EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. random: crng reseeded on system resumption random: crng reseeded on system resumption loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. random: crng reseeded on system resumption EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs (sda): Can't modify superblock whileperforming online resize netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. loop5: detected capacity change from 0 to 6 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. FAT-fs (loop5): Directory bread(block 6) failed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. loop5: detected capacity change from 0 to 6 FAT-fs (loop5): Directory bread(block 6) failed loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed loop5: detected capacity change from 0 to 6 FAT-fs (loop5): Directory bread(block 6) failed loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop5): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed set_capacity_and_notify: 2 callbacks suppressed loop4: detected capacity change from 0 to 6 loop1: detected capacity change from 0 to 4 FAT-fs (loop4): Directory bread(block 6) failed EXT4-fs: Mount option(s) incompatible with ext2 loop1: detected capacity change from 0 to 4 FAT-fs (loop4): Directory bread(block 6) failed EXT4-fs: Mount option(s) incompatible with ext2 FAT-fs (loop4): Directory bread(block 6) failed loop1: detected capacity change from 0 to 4 loop4: detected capacity change from 0 to 6 EXT4-fs: Mount option(s) incompatible with ext2 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed