===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.6/286 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.6/286: #0: ffff88800f6843f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801a40e330 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f668950 (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.6 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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f68269b3c27 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:00007ffe5fea5638 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffe5fea56c0 RCX: 00007f68269b3c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffe5fea56c0 RBP: 00007ffe5fea569c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffe5fea53d6 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000025815 R14: 0000000000000001 R15: 00007ffe5fea5700 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.6/286 Modules linked in: CPU: 0 UID: 0 PID: 286 Comm: syz-executor.6 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:ffff8880169cf9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b048000 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801b0483fc RBP: ffff88801b048000 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b048000 R13: 0000000000000001 R14: ffffffff85c0e550 R15: ffff88801a6ec5d0 FS: 00005555576e6400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b045b755c8 CR3: 000000000d091000 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 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f68269b3c27 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:00007ffe5fea5638 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffe5fea56c0 RCX: 00007f68269b3c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffe5fea56c0 RBP: 00007ffe5fea569c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffe5fea53d6 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000025815 R14: 0000000000000001 R15: 00007ffe5fea5700 irq event stamp: 247989 hardirqs last enabled at (247989): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (247987): [] handle_softirqs+0x65e/0x7d0 softirqs last enabled at (247988): [] __irq_exit_rcu+0xc4/0x100 softirqs last disabled at (247957): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768575050.629:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4664 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd2b871eb19 code=0x0 syz-executor.7 (4680) used greatest stack depth: 24240 bytes left program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768575050.865:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4699 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd2b871eb19 code=0x0 program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768575051.753:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4727 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd2b871eb19 code=0x0 loop2: detected capacity change from 0 to 2560 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir213857289/syzkaller.dgR2eN/25/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 2560 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir213857289/syzkaller.dgR2eN/27/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. syz-executor.4 (4745) used greatest stack depth: 23864 bytes left loop2: detected capacity change from 0 to 2560 loop1: detected capacity change from 0 to 4096 audit: type=1326 audit(1768575052.690:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4779 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd2b871eb19 code=0x0 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir213857289/syzkaller.dgR2eN/28/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. No source specified No source specified EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. No source specified audit: type=1326 audit(1768575053.967:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4853 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f631e901b19 code=0x7ffc0000 audit: type=1326 audit(1768575053.967:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4853 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=76 compat=0 ip=0x7f631e901b19 code=0x7ffc0000 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list audit: type=1326 audit(1768575053.970:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4853 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f631e901b19 code=0x7ffc0000 No source specified audit: type=1326 audit(1768575053.970:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4853 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7f631e901b19 code=0x7ffc0000 audit: type=1326 audit(1768575053.970:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4853 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f631e901b19 code=0x7ffc0000 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. No source specified netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. loop0: detected capacity change from 0 to 16 EXT4-fs (loop0): #clusters per group too big: 32803 loop0: detected capacity change from 0 to 16 EXT4-fs (loop0): #clusters per group too big: 32803 syz-executor.2 uses obsolete (PF_INET,SOCK_PACKET) netlink: 116 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 116 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 116 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 116 bytes leftover after parsing attributes in process `syz-executor.5'. kauditd_printk_skb: 14 callbacks suppressed audit: type=1400 audit(1768575057.550:34): avc: denied { tracepoint } for pid=5370 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 loop2: detected capacity change from 0 to 1 loop2: detected capacity change from 0 to 1 loop2: detected capacity change from 0 to 1 loop2: detected capacity change from 0 to 1 loop2: detected capacity change from 0 to 1 audit: type=1401 audit(1768575059.081:35): op=fscreate invalid_context=220000007D000000003F0000000000000000000000000000000000000000000000000000000000000000000000000000000002007D5C07002FB92A2A2E28480100000200802801002601EE000000000000000000 audit: type=1401 audit(1768575059.084:36): op=fscreate invalid_context=220000007D000000003F0000000000000000000000000000000000000000000000000000000000000000000000000000000002007D5C07002FB92A2A2E28480100000200802801002601EE000000000000000000 audit: type=1401 audit(1768575059.167:37): op=fscreate invalid_context=220000007D000000003F0000000000000000000000000000000000000000000000000000000000000000000000000000000002007D5C07002FB92A2A2E28480100000200802801002601EE000000000000000000 audit: type=1401 audit(1768575059.274:38): op=fscreate invalid_context=220000007D000000003F0000000000000000000000000000000000000000000000000000000000000000000000000000000002007D5C07002FB92A2A2E28480100000200802801002601EE000000000000000000 audit: type=1401 audit(1768575059.347:39): op=fscreate invalid_context=220000007D000000003F0000000000000000000000000000000000000000000000000000000000000000000000000000000002007D5C07002FB92A2A2E28480100000200802801002601EE000000000000000000