ci starts bisection 2025-09-10 01:24:04.978667956 +0000 UTC m=+14091.588829524 bisecting cause commit starting from 3e8e5822146bc396d2a7e5fbb7be13271665522a building syzkaller on d291dd2d58a1885c00a60561048b6ceb1bf1206a fetch other tags and check if the commit is present ensuring issue is reproducible on original commit 3e8e5822146bc396d2a7e5fbb7be13271665522a testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: daa7949139477d81914837753b6e302a6b5fde5ace3a1afda58a5fd2b6dc557c all runs: crashed: general protection fault in vc_deallocate representative crash: general protection fault in vc_deallocate, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f9b19d57f7e463bbe8dea2999a3d685d049680e5c5dca8bd2698af520e9a94e4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed kconfig minimization: base=4099 full=8511 leaves diff=2180 split chunks (needed=false): <2180> split chunk #0 of len 2180 into 5 parts testing without sub-chunk 1/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1d858ad080ff1d48f08e6a2a8dfefcc2698b731ce40590a4a4052cea3b459215 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6b124411ea72dbb84f7d6bab6f567776980818d1462b454d405bfe447073fccf all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 9a73c5063f82b7496982493afcbda7b82a34bc9908984920f034c29d4d83d5f1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c9ab6d27375bf6fbc4ba7f45ef4f639e10e9d48331504237d2ba29fef17924a5 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 3e8e5822146bc396d2a7e5fbb7be13271665522a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1da14410e2c69ec4395a8600a82f9cc1a54422fbfeebcb84c6a418de21d3a072 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed picked [v6.16 v6.15 v6.14 v6.12 v6.10 v6.8 v6.6 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 39 release tags testing release v6.16 testing commit 038d61fd642278bab63ee8ef722c50d10ab01e8f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ec7029e15a6c4d6b478447234ab776c3fd74e3b2206a019e0d7a2850260654c4 all runs: OK false negative chance: 0.000 # git bisect start 3e8e5822146bc396d2a7e5fbb7be13271665522a 038d61fd642278bab63ee8ef722c50d10ab01e8f Bisecting: 10341 revisions left to test after this (roughly 13 steps) [6a68cec16b647791d448102376a7eec2820e874f] Merge tag 'sched_ext-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext testing commit 6a68cec16b647791d448102376a7eec2820e874f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 143de7b7f1891ccb47b8fcef04fedfaa9c4cd1b5ab6cb7a2967b4840c9610be5 all runs: OK false negative chance: 0.000 # git bisect good 6a68cec16b647791d448102376a7eec2820e874f Bisecting: 5175 revisions left to test after this (roughly 12 steps) [5e56fb1598f599583487734403e4c614e60e6d38] Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git testing commit 5e56fb1598f599583487734403e4c614e60e6d38 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 93716461a126f87737e162d73fcf29845efb168509aeb1b2b70db658ca9812ed all runs: OK false negative chance: 0.000 # git bisect good 5e56fb1598f599583487734403e4c614e60e6d38 Bisecting: 2640 revisions left to test after this (roughly 11 steps) [4c740d41a79669c5556091d9c4e3abb7c44fbd82] Merge branch 'drm-next' of https://gitlab.freedesktop.org/agd5f/linux.git testing commit 4c740d41a79669c5556091d9c4e3abb7c44fbd82 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0252ad254181dcefcbcc3c974e27305a529ac4c69dd0b2a5d3e2bed16e8d644c all runs: OK false negative chance: 0.000 # git bisect good 4c740d41a79669c5556091d9c4e3abb7c44fbd82 Bisecting: 1304 revisions left to test after this (roughly 10 steps) [a979ba52334eb02cd47474f3f9f42980460243c5] Merge branch 'master' of https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git testing commit a979ba52334eb02cd47474f3f9f42980460243c5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5b605fbb621aebf1303c81d529b34b90f101a3a2712310f0eb8623e6392764fd all runs: OK false negative chance: 0.000 # git bisect good a979ba52334eb02cd47474f3f9f42980460243c5 Bisecting: 674 revisions left to test after this (roughly 9 steps) [7a6b4c2a14c551f1e6ba662808bdacb1d4e28be5] Merge branch 'togreg' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing commit 7a6b4c2a14c551f1e6ba662808bdacb1d4e28be5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 163a1b3584d64413b13878cb7fc71e8c4be86c111e49d19f2659e582b51a4640 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 7a6b4c2a14c551f1e6ba662808bdacb1d4e28be5 Bisecting: 340 revisions left to test after this (roughly 8 steps) [f0f5884067c7e2c1370484c813cdd356cf63f8c4] Merge branch 'driver-core-next' of https://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core.git testing commit f0f5884067c7e2c1370484c813cdd356cf63f8c4 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f2b3a19db3d5869d0a16b33ba9e2503d66bc729b5fd6b52f62f3cf7befc9d51f run #0: ignore: lost connection to test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 # git bisect good f0f5884067c7e2c1370484c813cdd356cf63f8c4 Bisecting: 161 revisions left to test after this (roughly 7 steps) [07ba6d7005f8f4c95e11701400e63f07871f112d] Merge branch 'next' of https://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git testing commit 07ba6d7005f8f4c95e11701400e63f07871f112d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 88e33147e9905d30571bf5a9a32b182bf5a65a3c18881ecce1283b52b6d99293 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 07ba6d7005f8f4c95e11701400e63f07871f112d Bisecting: 79 revisions left to test after this (roughly 7 steps) [c782d75d6f183a452538d3fca6da21baef0aa9ae] Merge branch 'tty-next' of https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git testing commit c782d75d6f183a452538d3fca6da21baef0aa9ae gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0d5fd4b2dce41a49cacea137abe16211b3253e88c8c3b54bf06f485d234b6fc5 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad c782d75d6f183a452538d3fca6da21baef0aa9ae Bisecting: 47 revisions left to test after this (roughly 6 steps) [0f577e88d9bc14d9ed00515b47fe3f8e9b1c35be] Merge patch series "eUSB2 Double Isochronous IN Bandwidth support" testing commit 0f577e88d9bc14d9ed00515b47fe3f8e9b1c35be gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 93a592eb1dc723a96e99e3cb5d4f57084b53e2c9388800984ab0a3daa54ab2c2 all runs: OK false negative chance: 0.000 # git bisect good 0f577e88d9bc14d9ed00515b47fe3f8e9b1c35be Bisecting: 23 revisions left to test after this (roughly 5 steps) [7cd9f5d6c5a3f31d2b282d31ddc4d78ff83a5c08] s390/char/con3270: use tty_port_tty guard() testing commit 7cd9f5d6c5a3f31d2b282d31ddc4d78ff83a5c08 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 63833434ae8a74738d026e6f488d603010dc66ffbb9d86b27d677b617c28a570 all runs: OK false negative chance: 0.000 # git bisect good 7cd9f5d6c5a3f31d2b282d31ddc4d78ff83a5c08 Bisecting: 11 revisions left to test after this (roughly 4 steps) [da7e8b3823962b13e713d4891e136a261ed8e6a2] tty/vt: Add missing return value for VT_RESIZE in vt_ioctl() testing commit da7e8b3823962b13e713d4891e136a261ed8e6a2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 340160bdc84a16563233876247994150b664c96869e8ba5fe7b0e2d82c62c560 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad da7e8b3823962b13e713d4891e136a261ed8e6a2 Bisecting: 5 revisions left to test after this (roughly 3 steps) [e3fa89f3a768a9c61cf1bfe86b939ab5f36a9744] serdev: Drop dev_pm_domain_detach() call testing commit e3fa89f3a768a9c61cf1bfe86b939ab5f36a9744 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8a7a3038b51635ba448b8d194a2671af616fa9a1a45036f21a7ce736f517aaf9 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad e3fa89f3a768a9c61cf1bfe86b939ab5f36a9744 Bisecting: 2 revisions left to test after this (roughly 2 steps) [cc4d900d0d6d8dd5c41832a93ff3cfa629a78f9a] serial: stm32: allow selecting console when the driver is module testing commit cc4d900d0d6d8dd5c41832a93ff3cfa629a78f9a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5f7d011e21909df366f0ece1a93e2123eea1348248f45cc8e1eb943357e3651d all runs: OK false negative chance: 0.000 # git bisect good cc4d900d0d6d8dd5c41832a93ff3cfa629a78f9a Bisecting: 0 revisions left to test after this (roughly 1 step) [aa1020f5cb50ca856fabbd24f6ee40a10aeae89b] serial: sc16is7xx: drop redundant conversion to bool testing commit aa1020f5cb50ca856fabbd24f6ee40a10aeae89b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b9bb4ac03a72ce01e1fc49f0f6f2cb3788c281187c825357aaa67f2f69c5bad0 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad aa1020f5cb50ca856fabbd24f6ee40a10aeae89b Bisecting: 0 revisions left to test after this (roughly 0 steps) [23743ba64709a9c137c1b928f8b8e00d846af9cc] vt: add support for smput/rmput escape codes testing commit 23743ba64709a9c137c1b928f8b8e00d846af9cc gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 304ca706eb82ce171091e03d02d4e66daced1dbbc45b45b895160525ce386f81 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate representative crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 23743ba64709a9c137c1b928f8b8e00d846af9cc 23743ba64709a9c137c1b928f8b8e00d846af9cc is the first bad commit commit 23743ba64709a9c137c1b928f8b8e00d846af9cc Author: Calixte Pernot Date: Mon Aug 25 14:56:09 2025 +0200 vt: add support for smput/rmput escape codes Support "\e[?1049h" and "\e[?1049l" escape codes. This patch allows programs to enter and leave alternate screens. This feature is widely available in graphical terminal emulators and mostly used by fullscreen terminal-based user interfaces such as text editors. Most editors such as vim and nano assume this escape code in not supported and will not try to print the escape sequence if TERM=linux. To try out this patch, run `TERM=xterm-256color vim` inside a VT. Signed-off-by: Calixte Pernot Link: https://lore.kernel.org/r/20250825125607.2478-3-calixte.pernot@grenoble-inp.org Signed-off-by: Greg Kroah-Hartman drivers/tty/vt/vt.c | 58 ++++++++++++++++++++++++++++++++++++++++++ include/linux/console_struct.h | 3 +++ 2 files changed, 61 insertions(+) accumulated error probability: 0.00 culprit signature: 304ca706eb82ce171091e03d02d4e66daced1dbbc45b45b895160525ce386f81 parent signature: 5f7d011e21909df366f0ece1a93e2123eea1348248f45cc8e1eb943357e3651d revisions tested: 23, total time: 4h56m30.834135999s (build: 2h13m58.603150572s, test: 2h11m36.579254863s) first bad commit: 23743ba64709a9c137c1b928f8b8e00d846af9cc vt: add support for smput/rmput escape codes recipients (to): ["calixte.pernot@grenoble-inp.org" "gregkh@linuxfoundation.org" "gregkh@linuxfoundation.org" "jirislaby@kernel.org" "linux-serial@vger.kernel.org"] recipients (cc): ["linux-kernel@vger.kernel.org" "npitre@baylibre.com"] crash: BUG: unable to handle kernel NULL pointer dereference in vc_deallocate BUG: kernel NULL pointer dereference, address: 0000000000000590 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8000000101f51067 P4D 8000000101f51067 PUD 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 1 UID: 0 PID: 2865 Comm: syz.3.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:vc_deallocate+0xeb/0x130 drivers/tty/vt/vt.c:1345 Code: 05 00 00 e8 a7 db b4 ff 48 c7 83 88 05 00 00 00 00 00 00 48 8b bb 00 04 00 00 e8 e0 63 b6 ff 49 c7 06 00 00 00 00 eb 02 31 db <48> 8b bb 90 05 00 00 48 85 ff 74 10 e8 c4 63 b6 ff 48 c7 83 90 05 RSP: 0018:ffffc90000f7fbc8 EFLAGS: 00010246 RAX: 0000000000000050 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 088da4b477fc6b35 RSI: ffffffff8252ca5f RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000b R10: 0000000000000000 R11: ffffffff8198a570 R12: 0000000000005608 R13: ffff8881023c0800 R14: ffffffff871b6ef0 R15: 0000000000000000 FS: 00007f36e26ef6c0(0000) GS:ffff8882b4b2a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000590 CR3: 0000000102f32000 CR4: 00000000003506f0 Call Trace: vt_disallocate_all+0xb0/0x100 drivers/tty/vt/vt_ioctl.c:652 vt_ioctl+0xea7/0xec0 drivers/tty/vt/vt_ioctl.c:886 tty_ioctl+0x5d0/0x690 drivers/tty/tty_io.c:2792 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl+0x69/0xc0 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f36e287ebe9 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:00007f36e26ef038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f36e2ab5fa0 RCX: 00007f36e287ebe9 RDX: 0000000000000000 RSI: 0000000000005608 RDI: 0000000000000004 RBP: 00007f36e2901e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f36e2ab6038 R14: 00007f36e2ab5fa0 R15: 00007fff98e4e008 Modules linked in: CR2: 0000000000000590 ---[ end trace 0000000000000000 ]--- RIP: 0010:vc_deallocate+0xeb/0x130 drivers/tty/vt/vt.c:1345 Code: 05 00 00 e8 a7 db b4 ff 48 c7 83 88 05 00 00 00 00 00 00 48 8b bb 00 04 00 00 e8 e0 63 b6 ff 49 c7 06 00 00 00 00 eb 02 31 db <48> 8b bb 90 05 00 00 48 85 ff 74 10 e8 c4 63 b6 ff 48 c7 83 90 05 RSP: 0018:ffffc90000f7fbc8 EFLAGS: 00010246 RAX: 0000000000000050 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 088da4b477fc6b35 RSI: ffffffff8252ca5f RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000b R10: 0000000000000000 R11: ffffffff8198a570 R12: 0000000000005608 R13: ffff8881023c0800 R14: ffffffff871b6ef0 R15: 0000000000000000 FS: 00007f36e26ef6c0(0000) GS:ffff8882b4b2a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000590 CR3: 0000000102f32000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 05 00 00 e8 a7 add $0xa7e80000,%eax 5: db b4 ff 48 c7 83 88 (bad) -0x777c38b8(%rdi,%rdi,8) c: 05 00 00 00 00 add $0x0,%eax 11: 00 00 add %al,(%rax) 13: 48 8b bb 00 04 00 00 mov 0x400(%rbx),%rdi 1a: e8 e0 63 b6 ff call 0xffb663ff 1f: 49 c7 06 00 00 00 00 movq $0x0,(%r14) 26: eb 02 jmp 0x2a 28: 31 db xor %ebx,%ebx * 2a: 48 8b bb 90 05 00 00 mov 0x590(%rbx),%rdi <-- trapping instruction 31: 48 85 ff test %rdi,%rdi 34: 74 10 je 0x46 36: e8 c4 63 b6 ff call 0xffb663ff 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: 83 .byte 0x83 3e: 90 nop 3f: 05 .byte 0x5