RBP: 00007fab4110a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc1d0e502f R14: 00007fab4110a300 R15: 0000000000022000 ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.0/6430 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.0/6430: #0: ffff88800f5123f8 (sb_writers#3){.+.+}-{0:0}, at: path_openat+0x1764/0x2d60 #1: ffff88804a805020 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: path_openat+0xe32/0x2d60 #2: ffff88800f516950 (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: 6430 Comm: syz-executor.0 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_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: 0033:0x7f7898613b19 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:00007f7895b89188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f7898726f60 RCX: 00007f7898613b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00007f789866df6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbf49b1af R14: 00007f7895b89300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.0/6430 Modules linked in: CPU: 1 UID: 0 PID: 6430 Comm: syz-executor.0 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:ffff88806cf08cb8 EFLAGS: 00010086 RAX: 00000000ffffffff RBX: ffff8880162dd280 RCX: 000000000000000d RDX: 0000000000000000 RSI: ffffffff85e25d40 RDI: ffff8880162dd67c RBP: ffff8880162dd280 R08: ffffffff84e98ac0 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88806cf08ff8 R12: ffff8880162dd280 R13: 0000000000000001 R14: ffff88806cf379c0 R15: ffff88806cf37a20 FS: 00007f7895b89700(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7898727018 CR3: 000000001e171000 CR4: 0000000000350ef0 Call Trace: sched_tick+0x232/0x6e0 update_process_times+0x116/0x210 tick_nohz_handler+0x4ff/0x8c0 __hrtimer_run_queues+0x654/0xbb0 hrtimer_interrupt+0x369/0x830 __sysvec_apic_timer_interrupt+0xbb/0x300 sysvec_apic_timer_interrupt+0x6b/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_cmp8+0x4/0x20 Code: 89 fe bf 04 00 00 00 e9 da fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 a8 fe ff ff 0f 1f RSP: 0018:ffff88800f2372b8 EFLAGS: 00000283 RAX: 0000000000000003 RBX: ffffffff8667d5b0 RCX: ffffc900009de000 RDX: 0000000000000000 RSI: ffffffff814885ba RDI: ffffffff815d780f RBP: ffffffff814885ba R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81487812 R11: 0000000000000000 R12: ffffffff815d780f R13: dffffc0000000000 R14: 0000000000000002 R15: 000000000000000b __report_bug+0x4cf/0x5b0 report_bug+0x7c/0x120 handle_bug+0x2e8/0x4f0 exc_invalid_op+0x35/0x80 asm_exc_invalid_op+0x1a/0x20 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:ffff88800f237510 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff8880162dd280 RCX: ffffc900009de000 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff8880162dd67c RBP: ffff8880162dd280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880162dd280 R13: 0000000000000001 R14: ffffffff85c10710 R15: ffff88801b9c8318 __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: 0033:0x7f7898613b19 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:00007f7895b89188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f7898726f60 RCX: 00007f7898613b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00007f789866df6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbf49b1af R14: 00007f7895b89300 R15: 0000000000022000 irq event stamp: 71 hardirqs last enabled at (71): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (69): [] handle_softirqs+0x65e/0x7d0 softirqs last enabled at (70): [] __irq_exit_rcu+0xc4/0x100 softirqs last disabled at (61): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. forcing mempool usage for bio_alloc_bioset+0x3f1/0x8f0 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6442 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_fail_alloc_page+0xe0/0x110 prepare_alloc_pages+0x1eb/0x550 __alloc_frozen_pages_noprof+0x185/0x2070 alloc_pages_mpol+0xed/0x340 vma_alloc_folio_noprof+0xe9/0x440 __handle_mm_fault+0x145c/0x2f50 handle_mm_fault+0x2d8/0x750 do_user_addr_fault+0x3cc/0x12b0 exc_page_fault+0xb0/0x180 asm_exc_page_fault+0x26/0x30 RIP: 0010:rep_movs_alternative+0x54/0x90 Code: 00 00 00 00 66 90 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 eb 05 e9 1f 2e 04 00 48 8b 06 <48> 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 RSP: 0018:ffff88804b0d78f0 EFLAGS: 00050206 RAX: 0000000000000008 RBX: ffff88804b0d7da0 RCX: 0000000000001000 RDX: 0000000000000000 RSI: ffff888019c53000 RDI: 0000000020008000 RBP: 0000000000001000 R08: 0000000000000000 R09: ffffed100338a7ff R10: ffff888019c53fff R11: 0000000000000000 R12: 0000000020008000 R13: ffff88804b0d7da8 R14: 00007ffffffff000 R15: ffff888019c53000 _copy_to_iter+0x35f/0x1660 copy_page_to_iter+0x12c/0x1e0 filemap_read+0x616/0xcf0 generic_file_read_iter+0x2ec/0x3f0 ext4_file_read_iter+0x188/0x4a0 vfs_read+0x868/0xc70 ksys_read+0x121/0x240 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab43b94b19 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:00007fab4110a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fab43ca7f60 RCX: 00007fab43b94b19 RDX: 00000000fffffdef RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007fab4110a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc1d0e502f R14: 00007fab4110a300 R15: 0000000000022000 EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6453 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 _copy_to_iter+0x1dc/0x1660 copy_page_to_iter+0x12c/0x1e0 filemap_read+0x616/0xcf0 generic_file_read_iter+0x2ec/0x3f0 ext4_file_read_iter+0x188/0x4a0 vfs_read+0x868/0xc70 ksys_read+0x121/0x240 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab43b94b19 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:00007fab4110a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fab43ca7f60 RCX: 00007fab43b94b19 RDX: 00000000fffffdef RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007fab4110a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc1d0e502f R14: 00007fab4110a300 R15: 0000000000022000 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 UID: 0 PID: 6464 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_fail_alloc_page+0xe0/0x110 prepare_alloc_pages+0x1eb/0x550 __alloc_frozen_pages_noprof+0x185/0x2070 alloc_pages_mpol+0xed/0x340 vma_alloc_folio_noprof+0xe9/0x440 __handle_mm_fault+0x145c/0x2f50 handle_mm_fault+0x2d8/0x750 do_user_addr_fault+0x3cc/0x12b0 exc_page_fault+0xb0/0x180 asm_exc_page_fault+0x26/0x30 RIP: 0010:rep_movs_alternative+0x54/0x90 Code: 00 00 00 00 66 90 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 eb 05 e9 1f 2e 04 00 48 8b 06 <48> 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 RSP: 0018:ffff88801da7f8f0 EFLAGS: 00050206 RAX: 000000000013a6a0 RBX: ffff88801da7fda0 RCX: 0000000000001000 RDX: 0000000000000000 RSI: ffff888019c56000 RDI: 0000000020009000 RBP: 0000000000001000 R08: 0000000000000000 R09: ffffed100338adff R10: ffff888019c56fff R11: 0000000000000000 R12: 0000000020009000 R13: ffff88801da7fda8 R14: 00007ffffffff000 R15: ffff888019c56000 _copy_to_iter+0x35f/0x1660 copy_page_to_iter+0x12c/0x1e0 filemap_read+0x616/0xcf0 generic_file_read_iter+0x2ec/0x3f0 ext4_file_read_iter+0x188/0x4a0 vfs_read+0x868/0xc70 ksys_read+0x121/0x240 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab43b94b19 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:00007fab4110a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fab43ca7f60 RCX: 00007fab43b94b19 RDX: 00000000fffffdef RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007fab4110a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc1d0e502f R14: 00007fab4110a300 R15: 0000000000022000 Bluetooth: hci2: Opcode 0x0401 failed: -4 Bluetooth: hci2: Opcode 0x0401 failed: -4 Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) forcing mempool usage for bio_alloc_bioset+0x3f1/0x8f0 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6488 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 _copy_to_iter+0x1dc/0x1660 copy_page_to_iter+0x12c/0x1e0 filemap_read+0x616/0xcf0 generic_file_read_iter+0x2ec/0x3f0 ext4_file_read_iter+0x188/0x4a0 vfs_read+0x868/0xc70 ksys_read+0x121/0x240 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab43b94b19 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:00007fab4110a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fab43ca7f60 RCX: 00007fab43b94b19 RDX: 00000000fffffdef RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007fab4110a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc1d0e502f R14: 00007fab4110a300 R15: 0000000000022000 EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) netlink: 'syz-executor.3': attribute type 8 has an invalid length. netlink: 'syz-executor.3': attribute type 8 has an invalid length. EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 2 (only 16 groups) forcing mempool usage for bio_alloc_bioset+0x3f1/0x8f0 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6513 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_fail_alloc_page+0xe0/0x110 prepare_alloc_pages+0x1eb/0x550 __alloc_frozen_pages_noprof+0x185/0x2070 alloc_pages_mpol+0xed/0x340 vma_alloc_folio_noprof+0xe9/0x440 __handle_mm_fault+0x145c/0x2f50 handle_mm_fault+0x2d8/0x750 do_user_addr_fault+0x3cc/0x12b0 exc_page_fault+0xb0/0x180 asm_exc_page_fault+0x26/0x30 RIP: 0010:rep_movs_alternative+0x54/0x90 Code: 00 00 00 00 66 90 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 eb 05 e9 1f 2e 04 00 48 8b 06 <48> 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 RSP: 0018:ffff88800e1878f0 EFLAGS: 00050206 RAX: 00000000000e91e8 RBX: ffff88800e187da0 RCX: 0000000000001000 RDX: 0000000000000000 RSI: ffff888019c50000 RDI: 000000002000a000 RBP: 0000000000001000 R08: 0000000000000000 R09: ffffed100338a1ff R10: ffff888019c50fff R11: 0000000000000000 R12: 000000002000a000 R13: ffff88800e187da8 R14: 00007ffffffff000 R15: ffff888019c50000 _copy_to_iter+0x35f/0x1660 copy_page_to_iter+0x12c/0x1e0 filemap_read+0x616/0xcf0 generic_file_read_iter+0x2ec/0x3f0 ext4_file_read_iter+0x188/0x4a0 vfs_read+0x868/0xc70 ksys_read+0x121/0x240 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab43b94b19 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:00007fab4110a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fab43ca7f60 RCX: 00007fab43b94b19 RDX: 00000000fffffdef RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007fab4110a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc1d0e502f R14: 00007fab4110a300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 89 fe mov %edi,%esi 2: bf 04 00 00 00 mov $0x4,%edi 7: e9 da fe ff ff jmpq 0xfffffee6 c: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 13: 00 00 00 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: f3 0f 1e fa endbr64 * 2a: 48 8b 0c 24 mov (%rsp),%rcx <-- trapping instruction 2e: 48 89 f2 mov %rsi,%rdx 31: 48 89 fe mov %rdi,%rsi 34: bf 06 00 00 00 mov $0x6,%edi 39: e9 a8 fe ff ff jmpq 0xfffffee6 3e: 0f .byte 0xf 3f: 1f (bad)