===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.3/286 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.3/286: #0: ffff88800f76e3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b113d10 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f75a950 (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: 286 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260114 #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 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2b15c25c27 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:00007fffbe024af8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fffbe024b80 RCX: 00007f2b15c25c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fffbe024b80 RBP: 00007fffbe024b5c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fffbe024896 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001d330 R14: 0000000000000006 R15: 00007fffbe024bc0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.3/286 Modules linked in: CPU: 0 UID: 0 PID: 286 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff88801a03f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888016a83700 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff888016a83afc RBP: ffff888016a83700 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888016a83700 R13: 0000000000000001 R14: ffffffff85c10e40 R15: ffff88801b3bebf0 FS: 0000555566f34400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557c78dc58 CR3: 000000001cbae000 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 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2b15c25c27 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:00007fffbe024af8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fffbe024b80 RCX: 00007f2b15c25c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fffbe024b80 RBP: 00007fffbe024b5c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fffbe024896 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001d330 R14: 0000000000000006 R15: 00007fffbe024bc0 irq event stamp: 185569 hardirqs last enabled at (185569): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (185568): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (185564): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (185562): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768380963.368:10): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4064 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fbf54425b19 code=0x0 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 06 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x880700 phys_seg 3 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer audit: type=1326 audit(1768380963.693:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4096 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fbf54425b19 code=0x0 I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x800000 phys_seg 6 prio class 2 Buffer I/O error on dev sr0, logical block 2, async page read Buffer I/O error on dev sr0, logical block 3, async page read Buffer I/O error on dev sr0, logical block 4, async page read Buffer I/O error on dev sr0, logical block 5, async page read Buffer I/O error on dev sr0, logical block 6, async page read Buffer I/O error on dev sr0, logical block 7, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x800000 phys_seg 7 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x800000 phys_seg 7 prio class 2 audit: type=1326 audit(1768380963.961:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4103 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fbf54425b19 code=0x0 audit: type=1326 audit(1768380964.169:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4132 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fbf54425b19 code=0x0 loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): #blocks per group too big: 8448 loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): #blocks per group too big: 8448 loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): #blocks per group too big: 8448 loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): #blocks per group too big: 8448 loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): #blocks per group too big: 8448 Zero length message leads to an empty skb audit: type=1400 audit(1768380965.849:14): avc: denied { write } for pid=4276 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 program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: hci4: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: SCO packet for unknown connection handle 205 Bluetooth: hci4: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: SCO packet for unknown connection handle 205 Bluetooth: hci5: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci4: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci5: SCO packet for unknown connection handle 205 Bluetooth: hci4: SCO packet for unknown connection handle 205 Bluetooth: hci4: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: SCO packet for unknown connection handle 205 Bluetooth: hci5: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: SCO packet for unknown connection handle 205 Bluetooth: hci4: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci4: SCO packet for unknown connection handle 205 Bluetooth: hci5: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: SCO packet for unknown connection handle 205 mac80211_hwsim hwsim15 wlan1: entered promiscuous mode mac80211_hwsim hwsim15 wlan1: left promiscuous mode mac80211_hwsim hwsim15 wlan1: entered promiscuous mode mac80211_hwsim hwsim15 wlan1: left promiscuous mode mac80211_hwsim hwsim15 wlan1: entered promiscuous mode mac80211_hwsim hwsim15 wlan1: left promiscuous mode mac80211_hwsim hwsim15 wlan1: entered promiscuous mode mac80211_hwsim hwsim15 wlan1: left promiscuous mode mac80211_hwsim hwsim15 wlan1: entered promiscuous mode mac80211_hwsim hwsim15 wlan1: left promiscuous mode