R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f67652b9000 R15: 0000000020012200 loop7: detected capacity change from 0 to 136 ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.7/6733 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.7/6733: #0: ffff88800f7c03f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804a92b388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f7c4950 (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: 6733 Comm: syz-executor.7 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_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: 0033:0x7f2e1f7d1c27 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:00007f2e1cd47fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007f2e1f7d1c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007f2e1cd48040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f2e1cd48000 R15: 0000000020012200 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.7/6733 Modules linked in: CPU: 0 UID: 0 PID: 6733 Comm: syz-executor.7 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:ffff888019f879e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801a655280 RCX: ffffc900078c6000 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801a65567c RBP: ffff88801a655280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801a655280 R13: 0000000000000001 R14: ffffffff85c10df0 R15: ffff88804aa29628 FS: 00007f2e1cd48700(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e1cd47f78 CR3: 000000000d5ef000 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: 0033:0x7f2e1f7d1c27 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:00007f2e1cd47fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007f2e1f7d1c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007f2e1cd48040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f2e1cd48000 R15: 0000000020012200 irq event stamp: 611 hardirqs last enabled at (611): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (610): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (604): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (602): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs error (device sda) in __ext4_new_inode:1086: Out of memory EXT4-fs error (device sda) in __ext4_new_inode:1086: Out of memory isofs_fill_super: bread failed, dev=loop7, iso_blknum=34, block=68 loop7: detected capacity change from 0 to 136 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6753 Comm: syz-executor.7 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 kmem_cache_alloc_noprof+0x80/0x760 security_inode_alloc+0x3e/0x130 inode_init_always_gfp+0xc9d/0xff0 alloc_inode+0x8d/0x250 new_inode+0x1e/0x160 __ext4_new_inode+0x35d/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: 0033:0x7f2e1f7d1c27 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:00007f2e1cd47fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007f2e1f7d1c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007f2e1cd48040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f2e1cd48000 R15: 0000000020012200 loop6: detected capacity change from 0 to 136 loop4: detected capacity change from 0 to 136 loop5: detected capacity change from 0 to 136 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6760 Comm: syz-executor.5 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 strncpy_from_user+0x3b/0x2f0 do_getname+0x70/0x3d0 __x64_sys_mkdir+0x55/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efffdcddc27 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:00007efffb253fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007efffdcddc27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007efffb254040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007efffb254000 R15: 0000000020012200 loop1: detected capacity change from 0 to 136 isofs_fill_super: bread failed, dev=loop4, iso_blknum=34, block=68 loop7: detected capacity change from 0 to 136 isofs_fill_super: bread failed, dev=loop6, iso_blknum=34, block=68 isofs_fill_super: bread failed, dev=loop7, iso_blknum=34, block=68 isofs_fill_super: bread failed, dev=loop1, iso_blknum=34, block=68 loop1: detected capacity change from 0 to 136 isofs_fill_super: bread failed, dev=loop1, iso_blknum=34, block=68 loop5: detected capacity change from 0 to 136 loop6: detected capacity change from 0 to 136 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6777 Comm: syz-executor.6 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_node_track_caller_noprof+0xd7/0x890 kmemdup_noprof+0x2b/0x60 sidtab_sid2str_get+0x17e/0x6f0 sidtab_entry_to_string+0x33/0x110 security_sid_to_context_core+0x350/0x620 selinux_inode_init_security+0x432/0x650 security_inode_init_security+0x1bc/0x370 __ext4_new_inode+0x38f7/0x4cd0 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: 0033:0x7fe866639c27 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:00007fe863baffa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007fe866639c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007fe863bb0040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007fe863bb0000 R15: 0000000020012200 isofs_fill_super: bread failed, dev=loop5, iso_blknum=34, block=68 loop4: detected capacity change from 0 to 136 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6780 Comm: syz-executor.7 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 kmem_cache_alloc_noprof+0x80/0x760 jbd2__journal_start+0x193/0x820 __ext4_journal_start_sb+0x325/0x580 __ext4_new_inode+0x2c81/0x4cd0 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: 0033:0x7f2e1f7d1c27 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:00007f2e1cd47fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007f2e1f7d1c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007f2e1cd48040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f2e1cd48000 R15: 0000000020012200 EXT4-fs error (device sda) in __ext4_new_inode:1086: Out of memory CPU: 0 UID: 0 PID: 6778 Comm: syz-executor.4 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_noprof+0xd6/0x880 security_inode_init_security+0x113/0x370 __ext4_new_inode+0x38f7/0x4cd0 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: 0033:0x7f6767d42c27 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:00007f67652b8fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007f6767d42c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007f67652b9040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f67652b9000 R15: 0000000020012200 isofs_fill_super: bread failed, dev=loop1, iso_blknum=34, block=68 isofs_fill_super: bread failed, dev=loop1, iso_blknum=34, block=68 isofs_fill_super: bread failed, dev=loop6, iso_blknum=34, block=68 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6792 Comm: syz-executor.7 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 kmem_cache_alloc_noprof+0x80/0x760 jbd2__journal_start+0x193/0x820 __ext4_journal_start_sb+0x325/0x580 __ext4_new_inode+0x2c81/0x4cd0 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: 0033:0x7f2e1f7d1c27 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:00007f2e1cd47fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000340 RCX: 00007f2e1f7d1c27 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 00007f2e1cd48040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000140 R14: 00007f2e1cd48000 R15: 0000000020012200 isofs_fill_super: bread failed, dev=loop5, iso_blknum=34, block=68 EXT4-fs error (device sda) in __ext4_new_inode:1086: Out of memory