No source specified loop2: detected capacity change from 0 to 264192 ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.5/4248 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.5/4248: #0: ffff88800fb5c3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801acbf640 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800ab18950 (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: 4248 Comm: syz-executor.5 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: 0033:0x7fabe0f63427 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:00007ffd19282858 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fabe0f63427 RDX: ffffffffffffffbc RSI: 00007fabe0fbe00e RDI: 00007fabe0fbd1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd192822d0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd19282920 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.5/4248 Modules linked in: CPU: 1 UID: 0 PID: 4248 Comm: syz-executor.5 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:ffff88801f7579a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888016e29b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888016e29f7c RBP: ffff888016e29b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888016e29b80 R13: 0000000000000001 R14: ffffffff85c0c660 R15: ffff888020dd3c48 FS: 000055558ef85400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b2368bd388 CR3: 00000000496e1000 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: 0033:0x7fabe0f63427 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:00007ffd19282858 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fabe0f63427 RDX: ffffffffffffffbc RSI: 00007fabe0fbe00e RDI: 00007fabe0fbd1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd192822d0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd19282920 irq event stamp: 1511 hardirqs last enabled at (1511): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (1510): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (1506): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (1504): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed loop2: detected capacity change from 0 to 264192 FAT-fs (loop7): Directory bread(block 6) failed ======================================================= 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. ======================================================= No source specified loop7: detected capacity change from 0 to 6 No source specified FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly syz-executor.3 (4243) used greatest stack depth: 24176 bytes left netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. No source specified ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' audit: type=1400 audit(1768755357.541:13): avc: denied { write } for pid=4263 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' syz-executor.6 (4275) used greatest stack depth: 24120 bytes left loop1: detected capacity change from 0 to 15 vfat: Unknown parameter '¡øµ˜À' loop1: detected capacity change from 0 to 264192 No source specified loop1: detected capacity change from 0 to 264192 loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): VFS: Can't find ext4 filesystem netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' loop5: detected capacity change from 0 to 4 EXT4-fs (loop5): invalid first ino: 2456823439 loop7: detected capacity change from 0 to 6 loop7: detected capacity change from 0 to 6 EXT4-fs (loop5): unable to read superblock mac80211_hwsim hwsim14 wlan1: entered promiscuous mode mac80211_hwsim hwsim14 wlan1: left promiscuous mode