===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.4/5250 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.4/5250: #0: ffff88800fd003f8 (sb_writers#3){.+.+}-{0:0}, at: path_openat+0x1764/0x2d60 #1: ffff88804dc53d10 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: path_openat+0xe32/0x2d60 #2: ffff88800f8d2950 (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: 5250 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260113 #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_create+0x2e2/0x4e0 lookup_open.isra.0+0xc03/0x1030 path_openat+0xea4/0x2d60 do_file_open+0x209/0x460 do_sys_openat2+0xe7/0x210 __x64_sys_creat+0xcc/0x120 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4cfddc1b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f4cfb316188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f4cfded5020 RCX: 00007f4cfddc1b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f4cfde1bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc18e9adff R14: 00007f4cfb316300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.4/5250 Modules linked in: CPU: 0 UID: 0 PID: 5250 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260113 #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 a6 bb de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 89 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 61 f9 73 03 e8 0c 88 56 00 e9 RSP: 0018:ffff888018bff510 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804c428000 RCX: ffffc90004809000 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88804c4283fc RBP: ffff88804c428000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804c428000 R13: 0000000000000001 R14: ffffffff85c0f4f0 R15: ffff88801c6a32c0 FS: 00007f4cfb316700(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cf30000 CR3: 0000000016084000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_create+0x2e2/0x4e0 lookup_open.isra.0+0xc03/0x1030 path_openat+0xea4/0x2d60 do_file_open+0x209/0x460 do_sys_openat2+0xe7/0x210 __x64_sys_creat+0xcc/0x120 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4cfddc1b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f4cfb316188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f4cfded5020 RCX: 00007f4cfddc1b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f4cfde1bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc18e9adff R14: 00007f4cfb316300 R15: 0000000000022000 irq event stamp: 2617 hardirqs last enabled at (2617): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (2616): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (2612): [] do_softirq+0x48/0x80 softirqs last disabled at (2261): [] do_softirq+0x48/0x80 ---[ end trace 0000000000000000 ]--- isofs_fill_super: bread failed, dev=loop2, iso_blknum=16, block=32 isofs_fill_super: bread failed, dev=loop2, iso_blknum=16, block=32 random: crng reseeded on system resumption random: crng reseeded on system resumption 9pnet_virtio: no channels available for device syz 9pnet_virtio: no channels available for device syz 9pnet_virtio: no channels available for device syz netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. 9pnet_virtio: no channels available for device syz set_capacity_and_notify: 5 callbacks suppressed loop7: detected capacity change from 0 to 736 ISO 9660 Extensions: RRIP_1991A audit: type=1400 audit(1768296397.296:10): avc: denied { write } for pid=5449 comm="syz-executor.6" 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(1768296397.300:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5450 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd1f1ab3b19 code=0x0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' audit: type=1326 audit(1768296398.140:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5450 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd1f1ab3b19 code=0x0 loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5553: inode #2: comm syz-executor.1: iget: special inode unallocated audit: type=1326 audit(1768296398.218:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5495 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd1f1ab3b19 code=0x0 EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5553: inode #2: comm syz-executor.1: iget: special inode unallocated EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5553: inode #2: comm syz-executor.1: iget: special inode unallocated EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop2: detected capacity change from 0 to 264192 loop1: detected capacity change from 0 to 512 audit: type=1326 audit(1768296399.171:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5538 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd1f1ab3b19 code=0x0 SELinux: Context u:r:untrusted_app:s0:c512,c768 is not valid (left unmapped). EXT4-fs error (device loop1): __ext4_fill_super:5553: inode #2: comm syz-executor.1: iget: special inode unallocated audit: type=1400 audit(1768296399.194:15): avc: denied { associate } for pid=5533 comm="syz-executor.5" name="file0" dev="tmpfs" ino=2 scontext=system_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=filesystem permissive=1 srawcon="u:r:untrusted_app:s0:c512,c768" EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop2: detected capacity change from 0 to 264192 loop2: detected capacity change from 0 to 264192 loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5553: inode #2: comm syz-executor.1: iget: special inode unallocated EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop2: detected capacity change from 0 to 264192 audit: type=1326 audit(1768296400.105:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5580 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd1f1ab3b19 code=0x0 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. mac80211_hwsim hwsim7 wlan1: entered promiscuous mode mac80211_hwsim hwsim7 wlan1: left promiscuous mode netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. mac80211_hwsim hwsim7 wlan1: entered promiscuous mode mac80211_hwsim hwsim7 wlan1: left promiscuous mode netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. mac80211_hwsim hwsim7 wlan1: entered promiscuous mode mac80211_hwsim hwsim7 wlan1: left promiscuous mode mac80211_hwsim hwsim7 wlan1: entered promiscuous mode mac80211_hwsim hwsim7 wlan1: left promiscuous mode mac80211_hwsim hwsim7 wlan1: entered promiscuous mode ALSA: seq fatal error: cannot create timer (-22) ALSA: seq fatal error: cannot create timer (-22) mac80211_hwsim hwsim7 wlan1: left promiscuous mode audit: type=1326 audit(1768296402.332:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5720 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fe65924cb19 code=0x0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x800800 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, lost async page write sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x800800 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, lost async page write audit: type=1326 audit(1768296403.159:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5720 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fe65924cb19 code=0x0 netlink: 'syz-executor.6': attribute type 6 has an invalid length. netlink: 'syz-executor.6': attribute type 6 has an invalid length. program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO SELinux: Context /usr/lib/telepathy/mission-control-5 is not valid (left unmapped).