===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.3/4063 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.3/4063: #0: ffff88800f8b43f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88802064f640 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fcb8950 (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: 4063 Comm: syz-executor.3 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_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: 0033:0x7ff8f6460427 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:00007ffc09dcc1a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff8f6460427 RDX: 00007ffc09dcc287 RSI: 00007ff8f64bb019 RDI: 00007ffc09dcc270 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc09dcc040 R10: 00007ffc09dcbef7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc09dcc270 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.3/4063 Modules linked in: CPU: 1 UID: 0 PID: 4063 Comm: syz-executor.3 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:ffff888047b679a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801d7db700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801d7dbafc RBP: ffff88801d7db700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801d7db700 R13: 0000000000000001 R14: ffffffff85c10710 R15: ffff888020648ca0 FS: 000055558b6cd400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8f64e0543 CR3: 000000004a537000 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: 0033:0x7ff8f6460427 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:00007ffc09dcc1a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff8f6460427 RDX: 00007ffc09dcc287 RSI: 00007ff8f64bb019 RDI: 00007ffc09dcc270 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc09dcc040 R10: 00007ffc09dcbef7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc09dcc270 irq event stamp: 205 hardirqs last enabled at (205): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (204): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (200): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (198): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- process 'syz-executor.2' launched './file1' with NULL argv: empty string added netlink: 'syz-executor.2': attribute type 33 has an invalid length. netlink: 'syz-executor.2': attribute type 33 has an invalid length. netlink: 'syz-executor.2': attribute type 33 has an invalid length. netlink: 'syz-executor.2': attribute type 33 has an invalid length. UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list Bluetooth: MGMT ver 1.23 mac80211_hwsim hwsim9 wlan1: entered promiscuous mode mac80211_hwsim hwsim9 wlan1: left promiscuous mode mac80211_hwsim hwsim9 wlan1: entered promiscuous mode mac80211_hwsim hwsim9 wlan1: left promiscuous mode mac80211_hwsim hwsim3 wlan1: entered promiscuous mode mac80211_hwsim hwsim13 wlan1: entered promiscuous mode mac80211_hwsim hwsim3 wlan1: left promiscuous mode mac80211_hwsim hwsim13 wlan1: left promiscuous mode mac80211_hwsim hwsim9 wlan1: entered promiscuous mode loop7: detected capacity change from 0 to 6 mac80211_hwsim hwsim9 wlan1: left promiscuous mode FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): error, corrupted directory (invalid entries) FAT-fs (loop7): Filesystem has been set read-only mac80211_hwsim hwsim13 wlan1: entered promiscuous mode mac80211_hwsim hwsim13 wlan1: left promiscuous mode mac80211_hwsim hwsim3 wlan1: entered promiscuous mode program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO mac80211_hwsim hwsim3 wlan1: left promiscuous mode loop5: detected capacity change from 0 to 3520 ISO 9660 Extensions: Microsoft Joliet Level 3 ISOFS: changing to secondary root mac80211_hwsim hwsim9 wlan1: entered promiscuous mode mac80211_hwsim hwsim9 wlan1: left promiscuous mode loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): error, corrupted directory (invalid entries) FAT-fs (loop7): Filesystem has been set read-only mac80211_hwsim hwsim13 wlan1: entered promiscuous mode mac80211_hwsim hwsim13 wlan1: left promiscuous mode loop7: detected capacity change from 0 to 6 program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO FAT-fs (loop7): Directory bread(block 6) failed loop5: detected capacity change from 0 to 3520 FAT-fs (loop7): error, corrupted directory (invalid entries) FAT-fs (loop7): Filesystem has been set read-only loop1: detected capacity change from 0 to 6 mac80211_hwsim hwsim3 wlan1: entered promiscuous mode mac80211_hwsim hwsim3 wlan1: left promiscuous mode loop6: detected capacity change from 0 to 6 ISO 9660 Extensions: Microsoft Joliet Level 3 ISOFS: changing to secondary root FAT-fs (loop1): Directory bread(block 6) failed FAT-fs (loop6): Directory bread(block 6) failed FAT-fs (loop1): error, corrupted directory (invalid entries) FAT-fs (loop1): Filesystem has been set read-only FAT-fs (loop6): error, corrupted directory (invalid entries) FAT-fs (loop6): Filesystem has been set read-only loop3: detected capacity change from 0 to 6 FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): error, corrupted directory (invalid entries) FAT-fs (loop3): Filesystem has been set read-only loop6: detected capacity change from 0 to 6 loop7: detected capacity change from 0 to 6 FAT-fs (loop6): Directory bread(block 6) failed FAT-fs (loop6): error, corrupted directory (invalid entries) FAT-fs (loop6): Filesystem has been set read-only FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): error, corrupted directory (invalid entries) FAT-fs (loop7): Filesystem has been set read-only FAT-fs (loop1): Directory bread(block 6) failed FAT-fs (loop6): Directory bread(block 6) failed FAT-fs (loop6): error, corrupted directory (invalid entries) FAT-fs (loop6): Filesystem has been set read-only FAT-fs (loop1): error, corrupted directory (invalid entries) FAT-fs (loop1): Filesystem has been set read-only FAT-fs (loop1): Directory bread(block 6) failed program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO FAT-fs (loop1): error, corrupted directory (invalid entries) FAT-fs (loop1): Filesystem has been set read-only FAT-fs (loop3): Directory bread(block 6) failed ISO 9660 Extensions: Microsoft Joliet Level 3 ISOFS: changing to secondary root FAT-fs (loop3): error, corrupted directory (invalid entries) FAT-fs (loop3): Filesystem has been set read-only program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO ISO 9660 Extensions: Microsoft Joliet Level 3 ISOFS: changing to secondary root FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): error, corrupted directory (invalid entries) FAT-fs (loop3): Filesystem has been set read-only audit: type=1400 audit(1768464481.180:12): avc: denied { write } for pid=4506 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1326 audit(1768464481.200:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.203:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=16 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.203:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.207:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.221:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.221:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.221:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.222:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f7c9bae0b19 code=0x7ffc0000 audit: type=1326 audit(1768464481.222:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4514 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7f7c9ba93a04 code=0x7ffc0000 FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): FAT read failed (blocknr 32) FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): FAT read failed (blocknr 32) cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): FAT read failed (blocknr 32) cgroup: subsys name conflicts with all FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): FAT read failed (blocknr 32) cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): FAT read failed (blocknr 32) cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all cgroup: subsys name conflicts with all netlink: 16 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.