RBP: 00007f472e0fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc9d1d9e4f R14: 00007f472e0fd300 R15: 0000000000022000 ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.2/7711 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.2/7711: #0: ffff88800f9783f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88805436d9a8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f97c950 (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: 7711 Comm: syz-executor.2 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_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f12e1f3a427 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 58 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:00007ffd102e0f88 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12e1f3a427 RDX: 00007ffd102e1063 RSI: 00007f12e1f9502f RDI: 00007ffd102e1050 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd102e0e20 R10: 00007ffd102e0cd7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd102e1050 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/7711 Modules linked in: CPU: 0 UID: 0 PID: 7711 Comm: syz-executor.2 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:ffff888048eaf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888049e89b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888049e89f7c RBP: ffff888049e89b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888049e89b80 R13: 0000000000000001 R14: ffffffff85c0f090 R15: ffff88801b9c3c48 FS: 000055555d0ef400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b220d3000 CR3: 0000000050018000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f12e1f3a427 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 58 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:00007ffd102e0f88 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12e1f3a427 RDX: 00007ffd102e1063 RSI: 00007f12e1f9502f RDI: 00007ffd102e1050 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd102e0e20 R10: 00007ffd102e0cd7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd102e1050 irq event stamp: 479 hardirqs last enabled at (479): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (478): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (474): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (472): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7712 Comm: syz-executor.6 Tainted: G W 6.19.0-rc5-next-20260116 #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_cache_noprof+0x80/0x730 __iomap_dio_rw+0x26f/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f50b2e95b19 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:00007f50b040b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f50b2fa8f60 RCX: 00007f50b2e95b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f50b040b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff664efadf R14: 00007f50b040b300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 7725 Comm: syz-executor.5 Tainted: G W 6.19.0-rc5-next-20260116 #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_cache_noprof+0x80/0x730 __iomap_dio_rw+0x26f/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4730b87b19 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:00007f472e0fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f4730c9af60 RCX: 00007f4730b87b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f472e0fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc9d1d9e4f R14: 00007f472e0fd300 R15: 0000000000022000 random: crng reseeded on system resumption FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 7736 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260116 #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_iomap_begin+0x57f/0xe80 iomap_iter+0x62b/0x10c0 __iomap_dio_rw+0x740/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f568d1d6b19 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:00007f568a74c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f568d2e9f60 RCX: 00007f568d1d6b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f568a74c1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc68d6cf0f R14: 00007f568a74c300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7744 Comm: syz-executor.2 Tainted: G W 6.19.0-rc5-next-20260116 #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_cache_noprof+0x80/0x730 __iomap_dio_rw+0x26f/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f12e1f3ab19 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:00007f12df4b0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f12e204df60 RCX: 00007f12e1f3ab19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f12df4b01d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd102e0d3f R14: 00007f12df4b0300 R15: 0000000000022000 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci0: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7755 Comm: syz-executor.5 Tainted: G W 6.19.0-rc5-next-20260116 #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_iomap_begin+0x57f/0xe80 iomap_iter+0x62b/0x10c0 __iomap_dio_rw+0x740/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4730b87b19 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:00007f472e0fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f4730c9af60 RCX: 00007f4730b87b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f472e0fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc9d1d9e4f R14: 00007f472e0fd300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7763 Comm: syz-executor.4 Tainted: G W 6.19.0-rc5-next-20260116 #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_iomap_begin+0x57f/0xe80 iomap_iter+0x62b/0x10c0 __iomap_dio_rw+0x740/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f554007bb19 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:00007f553d5f1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f554018ef60 RCX: 00007f554007bb19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f553d5f11d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffefbdbf91f R14: 00007f553d5f1300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7768 Comm: syz-executor.6 Tainted: G W 6.19.0-rc5-next-20260116 #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_iomap_begin+0x57f/0xe80 iomap_iter+0x62b/0x10c0 __iomap_dio_rw+0x740/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f50b2e95b19 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:00007f50b040b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f50b2fa8f60 RCX: 00007f50b2e95b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f50b040b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff664efadf R14: 00007f50b040b300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7779 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260116 #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+0xd6/0x830 ext4_find_extent+0x7f5/0xa00 ext4_ext_map_blocks+0x1cc/0x6050 ext4_map_query_blocks+0x110/0x900 ext4_map_blocks+0x4bc/0x1470 ext4_iomap_begin+0xa5b/0xe80 iomap_iter+0x62b/0x10c0 __iomap_dio_rw+0x740/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f568d1d6b19 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:00007f568a74c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f568d2e9f60 RCX: 00007f568d1d6b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f568a74c1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc68d6cf0f R14: 00007f568a74c300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 7784 Comm: syz-executor.2 Tainted: G W 6.19.0-rc5-next-20260116 #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_iomap_begin+0x57f/0xe80 iomap_iter+0x62b/0x10c0 __iomap_dio_rw+0x740/0x1c30 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xe0e/0x19f0 iter_file_splice_write+0xa3a/0x11c0 direct_splice_actor+0x192/0x7b0 splice_direct_to_actor+0x347/0x9d0 do_splice_direct+0x179/0x250 do_sendfile+0xa8e/0xdc0 __x64_sys_sendfile64+0x1d3/0x210 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f12e1f3ab19 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:00007f12df4b0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f12e204df60 RCX: 00007f12e1f3ab19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f12df4b01d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000040000014100 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd102e0d3f R14: 00007f12df4b0300 R15: 0000000000022000 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4