gfs2: fsid=syz:syz.0: H: s:SH f:H e:0 p:9896 [syz.0.1214] iterate_dir+0x532/0xb40 fs/readdir.c:108 ================================================================== BUG: KASAN: global-out-of-bounds in pid_nr include/linux/pid.h:179 [inline] BUG: KASAN: global-out-of-bounds in dump_holder fs/gfs2/glock.c:2295 [inline] BUG: KASAN: global-out-of-bounds in gfs2_dump_glock+0x19c5/0x1c80 fs/gfs2/glock.c:2407 Read of size 4 at addr ffffffff8b6e6900 by task syz.0.1214/9908 CPU: 0 UID: 0 PID: 9908 Comm: syz.0.1214 Not tainted 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 pid_nr include/linux/pid.h:179 [inline] dump_holder fs/gfs2/glock.c:2295 [inline] gfs2_dump_glock+0x19c5/0x1c80 fs/gfs2/glock.c:2407 gfs2_consist_inode_i+0x104/0x150 fs/gfs2/util.c:457 gfs2_dirent_scan+0x352/0x400 fs/gfs2/dir.c:589 gfs2_dirent_search+0x459/0x5c0 fs/gfs2/dir.c:853 gfs2_dir_search+0x98/0x2e0 fs/gfs2/dir.c:1653 gfs2_lookupi+0x4b9/0x6f0 fs/gfs2/inode.c:340 __gfs2_lookup+0xa1/0x290 fs/gfs2/inode.c:897 gfs2_atomic_open+0xdd/0x240 fs/gfs2/inode.c:1298 atomic_open fs/namei.c:3509 [inline] lookup_open.isra.0+0xca2/0x14c0 fs/namei.c:3620 open_last_lookups fs/namei.c:3748 [inline] path_openat+0x904/0x2d60 fs/namei.c:3984 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f61bf385d19 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f61bd1d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f61bf576080 RCX: 00007f61bf385d19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f61bf401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f61bf576080 R15: 00007ffc6c600878 The buggy address belongs to the variable: __param_str_rcu_expedited+0x20/0x140 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb6e6 flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002000 ffffea00002db988 ffffea00002db988 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffffffff8b6e6800: f9 f9 f9 f9 00 06 f9 f9 f9 f9 f9 f9 00 00 00 07 ffffffff8b6e6880: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 07 f9 >ffffffff8b6e6900: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 ^ ffffffff8b6e6980: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 02 f9 f9 f9 ffffffff8b6e6a00: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 02 f9 ================================================================== ================================================================== BUG: KASAN: global-out-of-bounds in pid_task+0x148/0x170 kernel/pid.c:414 Read of size 8 at addr ffffffff8b6e6878 by task syz.0.1214/9908 CPU: 0 UID: 0 PID: 9908 Comm: syz.0.1214 Tainted: G B 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0 Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 pid_task+0x148/0x170 kernel/pid.c:414 dump_holder fs/gfs2/glock.c:2296 [inline] gfs2_dump_glock+0x1278/0x1c80 fs/gfs2/glock.c:2407 gfs2_consist_inode_i+0x104/0x150 fs/gfs2/util.c:457 gfs2_dirent_scan+0x352/0x400 fs/gfs2/dir.c:589 gfs2_dirent_search+0x459/0x5c0 fs/gfs2/dir.c:853 gfs2_dir_search+0x98/0x2e0 fs/gfs2/dir.c:1653 gfs2_lookupi+0x4b9/0x6f0 fs/gfs2/inode.c:340 __gfs2_lookup+0xa1/0x290 fs/gfs2/inode.c:897 gfs2_atomic_open+0xdd/0x240 fs/gfs2/inode.c:1298 atomic_open fs/namei.c:3509 [inline] lookup_open.isra.0+0xca2/0x14c0 fs/namei.c:3620 open_last_lookups fs/namei.c:3748 [inline] path_openat+0x904/0x2d60 fs/namei.c:3984 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f61bf385d19 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f61bd1d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f61bf576080 RCX: 00007f61bf385d19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f61bf401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f61bf576080 R15: 00007ffc6c600878 The buggy address belongs to the variable: __param_str_rcu_normal_after_boot+0x18/0x40 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb6e6 flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002000 ffffea00002db988 ffffea00002db988 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffffffff8b6e6700: 00 00 00 00 00 00 00 00 f9 f9 f9 f9 00 05 f9 f9 ffffffff8b6e6780: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 01 f9 >ffffffff8b6e6800: f9 f9 f9 f9 00 06 f9 f9 f9 f9 f9 f9 00 00 00 07 ^ ffffffff8b6e6880: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 07 f9 ffffffff8b6e6900: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 ================================================================== ================================================================== BUG: KASAN: global-out-of-bounds in dump_holder fs/gfs2/glock.c:2303 [inline] BUG: KASAN: global-out-of-bounds in gfs2_dump_glock+0x1876/0x1c80 fs/gfs2/glock.c:2407 Read of size 8 at addr ffffffff8e1bb530 by task syz.0.1214/9908 CPU: 0 UID: 0 PID: 9908 Comm: syz.0.1214 Tainted: G B 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0 Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 dump_holder fs/gfs2/glock.c:2303 [inline] gfs2_dump_glock+0x1876/0x1c80 fs/gfs2/glock.c:2407 gfs2_consist_inode_i+0x104/0x150 fs/gfs2/util.c:457 gfs2_dirent_scan+0x352/0x400 fs/gfs2/dir.c:589 gfs2_dirent_search+0x459/0x5c0 fs/gfs2/dir.c:853 gfs2_dir_search+0x98/0x2e0 fs/gfs2/dir.c:1653 gfs2_lookupi+0x4b9/0x6f0 fs/gfs2/inode.c:340 __gfs2_lookup+0xa1/0x290 fs/gfs2/inode.c:897 gfs2_atomic_open+0xdd/0x240 fs/gfs2/inode.c:1298 atomic_open fs/namei.c:3509 [inline] lookup_open.isra.0+0xca2/0x14c0 fs/namei.c:3620 open_last_lookups fs/namei.c:3748 [inline] path_openat+0x904/0x2d60 fs/namei.c:3984 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f61bf385d19 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f61bd1d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f61bf576080 RCX: 00007f61bf385d19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f61bf401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f61bf576080 R15: 00007ffc6c600878 The buggy address belongs to the variable: rcu_lock_map+0x30/0x60 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1bb flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002000 ffffea0000386ec8 ffffea0000386ec8 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffffffff8e1bb400: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 f9 f9 f9 ffffffff8e1bb480: f9 f9 f9 f9 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 >ffffffff8e1bb500: 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 ^ ffffffff8e1bb580: f9 f9 f9 f9 00 00 00 00 f9 f9 f9 f9 00 05 f9 f9 ffffffff8e1bb600: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== ================================================================== BUG: KASAN: global-out-of-bounds in dump_holder fs/gfs2/glock.c:2302 [inline] BUG: KASAN: global-out-of-bounds in gfs2_dump_glock+0x189a/0x1c80 fs/gfs2/glock.c:2407 Read of size 8 at addr ffffffff8e1bb528 by task syz.0.1214/9908 CPU: 0 UID: 0 PID: 9908 Comm: syz.0.1214 Tainted: G B 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0 Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 dump_holder fs/gfs2/glock.c:2302 [inline] gfs2_dump_glock+0x189a/0x1c80 fs/gfs2/glock.c:2407 gfs2_consist_inode_i+0x104/0x150 fs/gfs2/util.c:457 gfs2_dirent_scan+0x352/0x400 fs/gfs2/dir.c:589 gfs2_dirent_search+0x459/0x5c0 fs/gfs2/dir.c:853 gfs2_dir_search+0x98/0x2e0 fs/gfs2/dir.c:1653 gfs2_lookupi+0x4b9/0x6f0 fs/gfs2/inode.c:340 __gfs2_lookup+0xa1/0x290 fs/gfs2/inode.c:897 gfs2_atomic_open+0xdd/0x240 fs/gfs2/inode.c:1298 atomic_open fs/namei.c:3509 [inline] lookup_open.isra.0+0xca2/0x14c0 fs/namei.c:3620 open_last_lookups fs/namei.c:3748 [inline] path_openat+0x904/0x2d60 fs/namei.c:3984 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f61bf385d19 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f61bd1d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f61bf576080 RCX: 00007f61bf385d19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f61bf401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f61bf576080 R15: 00007ffc6c600878 The buggy address belongs to the variable: rcu_lock_map+0x28/0x60 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1bb flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002000 ffffea0000386ec8 ffffea0000386ec8 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffffffff8e1bb400: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 f9 f9 f9 ffffffff8e1bb480: f9 f9 f9 f9 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 >ffffffff8e1bb500: 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 ^ ffffffff8e1bb580: f9 f9 f9 f9 00 00 00 00 f9 f9 f9 f9 00 05 f9 f9 ffffffff8e1bb600: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== Oops: general protection fault, probably for non-canonical address 0xe0000a8dedec4c3d: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000746f6f6261e8-0x0000746f6f6261ef] CPU: 0 UID: 0 PID: 9908 Comm: syz.0.1214 Tainted: G B 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0 Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:string_nocheck lib/vsprintf.c:646 [inline] RIP: 0010:string+0x1ba/0x3d0 lib/vsprintf.c:728 Code: 24 08 48 39 c5 74 4b e8 b4 fa 75 f6 48 89 ef 48 83 c5 01 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 08 38 d0 7f 08 84 c0 0f 85 c9 01 00 00 44 0f b6 65 ff 31 RSP: 0018:ffffc9000bcde980 EFLAGS: 00010002 RAX: 00000e8dedec4c3d RBX: ffffc9000bcdeee7 RCX: dffffc0000000000 RDX: 0000000000000002 RSI: ffffffff8b2418fc RDI: 0000746f6f6261ea RBP: 0000746f6f6261eb R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffff R11: 3d3d3d3d3d3d3d3d R12: 00000000ffffffff R13: ffffc9000bcdeec0 R14: 0000746f6f6261ea R15: 0000000000000000 FS: 00007f61bd1d56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f005255cd58 CR3: 000000001297c000 CR4: 0000000000350ef0 Call Trace: vsnprintf+0xbed/0x1880 lib/vsprintf.c:2848 va_format.constprop.0+0x1ad/0x3a0 lib/vsprintf.c:1718 pointer+0x857/0xbf0 lib/vsprintf.c:2479 vsnprintf+0x4c4/0x1880 lib/vsprintf.c:2852 vprintk_store+0x3b1/0xc00 kernel/printk/printk.c:2279 vprintk_emit+0x155/0x6f0 kernel/printk/printk.c:2408 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86 _printk+0xc8/0x100 kernel/printk/printk.c:2457 gfs2_print_dbg+0x159/0x160 fs/gfs2/glock.c:1455 dump_holder fs/gfs2/glock.c:2300 [inline] gfs2_dump_glock+0x1103/0x1c80 fs/gfs2/glock.c:2407 gfs2_consist_inode_i+0x104/0x150 fs/gfs2/util.c:457 gfs2_dirent_scan+0x352/0x400 fs/gfs2/dir.c:589 gfs2_dirent_search+0x459/0x5c0 fs/gfs2/dir.c:853 gfs2_dir_search+0x98/0x2e0 fs/gfs2/dir.c:1653 gfs2_lookupi+0x4b9/0x6f0 fs/gfs2/inode.c:340 __gfs2_lookup+0xa1/0x290 fs/gfs2/inode.c:897 gfs2_atomic_open+0xdd/0x240 fs/gfs2/inode.c:1298 atomic_open fs/namei.c:3509 [inline] lookup_open.isra.0+0xca2/0x14c0 fs/namei.c:3620 open_last_lookups fs/namei.c:3748 [inline] path_openat+0x904/0x2d60 fs/namei.c:3984 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f61bf385d19 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f61bd1d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f61bf576080 RCX: 00007f61bf385d19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f61bf401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f61bf576080 R15: 00007ffc6c600878 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:string_nocheck lib/vsprintf.c:646 [inline] RIP: 0010:string+0x1ba/0x3d0 lib/vsprintf.c:728 Code: 24 08 48 39 c5 74 4b e8 b4 fa 75 f6 48 89 ef 48 83 c5 01 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 08 38 d0 7f 08 84 c0 0f 85 c9 01 00 00 44 0f b6 65 ff 31 RSP: 0018:ffffc9000bcde980 EFLAGS: 00010002 RAX: 00000e8dedec4c3d RBX: ffffc9000bcdeee7 RCX: dffffc0000000000 RDX: 0000000000000002 RSI: ffffffff8b2418fc RDI: 0000746f6f6261ea RBP: 0000746f6f6261eb R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffff R11: 3d3d3d3d3d3d3d3d R12: 00000000ffffffff R13: ffffc9000bcdeec0 R14: 0000746f6f6261ea R15: 0000000000000000 FS: 00007f61bd1d56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f005255cd58 CR3: 000000001297c000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 24 08 and $0x8,%al 2: 48 39 c5 cmp %rax,%rbp 5: 74 4b je 0x52 7: e8 b4 fa 75 f6 call 0xf675fac0 c: 48 89 ef mov %rbp,%rdi f: 48 83 c5 01 add $0x1,%rbp 13: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 1a: fc ff df 1d: 48 89 f8 mov %rdi,%rax 20: 48 89 fa mov %rdi,%rdx 23: 48 c1 e8 03 shr $0x3,%rax 27: 83 e2 07 and $0x7,%edx * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 38 d0 cmp %dl,%al 30: 7f 08 jg 0x3a 32: 84 c0 test %al,%al 34: 0f 85 c9 01 00 00 jne 0x203 3a: 44 0f b6 65 ff movzbl -0x1(%rbp),%r12d 3f: 31 .byte 0x31