===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.4/4439 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.4/4439: #0: ffff88800f7063f8 (sb_writers#3){.+.+}-{0:0}, at: path_openat+0x1764/0x2d60 #1: ffff8880209359a8 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: path_openat+0xe32/0x2d60 #2: ffff88800f6fa950 (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: 4439 Comm: syz-executor.4 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_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: 0033:0x7f6f8d539b19 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:00007f6f8aaaf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f6f8d64cf60 RCX: 00007f6f8d539b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f6f8d593f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd7c4b7b5f R14: 00007f6f8aaaf300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/4439 Modules linked in: CPU: 1 UID: 0 PID: 4439 Comm: syz-executor.4 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:ffff88804a0d7510 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff8880186e0000 RCX: ffffc90009cd8000 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff8880186e03fc RBP: ffff8880186e0000 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880186e0000 R13: 0000000000000001 R14: ffffffff85c0d060 R15: ffff888020b91fb0 FS: 00007f6f8aaaf700(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6f8d64d018 CR3: 00000000498b2000 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: 0033:0x7f6f8d539b19 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:00007f6f8aaaf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f6f8d64cf60 RCX: 00007f6f8d539b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f6f8d593f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd7c4b7b5f R14: 00007f6f8aaaf300 R15: 0000000000022000 irq event stamp: 337 hardirqs last enabled at (337): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (336): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (330): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (326): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- __nla_validate_parse: 1 callbacks suppressed netlink: 104 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1400 audit(1768383657.872:10): avc: denied { write } for pid=4481 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 serio: Serial port ptm0 serio: Serial port ptm0 audit: type=1400 audit(1768383658.103:11): avc: denied { read } for pid=4515 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 serio: Serial port ptm0 serio: Serial port ptm0 serio: Serial port ptm0 tmpfs: Unknown parameter './file1' mac80211_hwsim hwsim12 wlan1: entered promiscuous mode mac80211_hwsim hwsim12 wlan1: left promiscuous mode mac80211_hwsim hwsim12 wlan1: entered promiscuous mode mac80211_hwsim hwsim12 wlan1: left promiscuous mode mac80211_hwsim hwsim12 wlan1: entered promiscuous mode mac80211_hwsim hwsim12 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 hwsim12 wlan1: entered promiscuous mode mac80211_hwsim hwsim12 wlan1: left promiscuous mode mac80211_hwsim hwsim15 wlan1: entered promiscuous mode mac80211_hwsim hwsim15 wlan1: left promiscuous mode tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' mac80211_hwsim hwsim12 wlan1: entered promiscuous mode mac80211_hwsim hwsim12 wlan1: left promiscuous mode loop0: detected capacity change from 0 to 16383 loop2: detected capacity change from 0 to 64 FAT-fs (loop0): invalid media value (0x26) FAT-fs (loop0): Can't find a valid FAT filesystem FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop0: detected capacity change from 0 to 16383 loop0: detected capacity change from 0 to 16383 FAT-fs (loop0): invalid media value (0x26) FAT-fs (loop0): Can't find a valid FAT filesystem random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption loop0: detected capacity change from 0 to 16383 random: crng reseeded on system resumption FAT-fs (loop0): invalid media value (0x26) FAT-fs (loop0): Can't find a valid FAT filesystem random: crng reseeded on system resumption loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed loop2: detected capacity change from 0 to 6 FAT-fs (loop2): Directory bread(block 6) failed loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 FAT-fs (loop2): Directory bread(block 6) failed UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 FAT-fs (loop2): Directory bread(block 6) failed audit: type=1326 audit(1768383665.628:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 audit: type=1326 audit(1768383665.628:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 audit: type=1326 audit(1768383665.633:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=263 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 audit: type=1326 audit(1768383665.633:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 audit: type=1326 audit(1768383665.634:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 audit: type=1326 audit(1768383665.636:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=83 compat=0 ip=0x7ff8d9e83c27 code=0x7ffc0000 audit: type=1326 audit(1768383665.636:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=165 compat=0 ip=0x7ff8d9e8604a code=0x7ffc0000 audit: type=1326 audit(1768383665.643:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7ff8d9e37a04 code=0x7ffc0000 audit: type=1326 audit(1768383665.643:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 audit: type=1326 audit(1768383665.645:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4979 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7ff8d9e84b19 code=0x7ffc0000 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16