ci starts bisection 2023-01-25 08:13:06.115861466 +0000 UTC m=+219700.061923524 bisecting cause commit starting from 9d2f6060fe4c3b49d0cdc1dce1c99296f33379c8 building syzkaller on c692fab1c2ff0de2554c5940f77ac8c168e729b2 ensuring issue is reproducible on original commit 9d2f6060fe4c3b49d0cdc1dce1c99296f33379c8 testing commit 9d2f6060fe4c3b49d0cdc1dce1c99296f33379c8 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: d166308aaec285c5f2385ad05823e5d19139b821d0fd76750326d353d7edad9f run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #12: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #13: crashed: INFO: task hung in rfkill_sync_work run #14: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #15: crashed: INFO: task hung in rfkill_unregister run #16: crashed: INFO: task hung in misc_open run #17: crashed: INFO: task hung in rfkill_unregister run #18: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #19: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v6.1 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6f0639f585ad90cd49f4c8ba4e2163324928f03c0dfc7f75e15fa0b4c23e9c90 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in misc_open run #8: crashed: INFO: task hung in misc_open run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v6.0 testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 39f0e5dd8ad36138063f11607f130aca8a07f6c5ae81702fe443533b1b5716b9 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in nfc_rfkill_set_block run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v5.19 testing commit 3d7cb6b04c3f3115719235cc6866b10326de34cd gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f5cb75b761c51be1033e664820917d620c96137fa0a81c71bf13565a8b132a40 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in rfkill_sync_work run #3: crashed: INFO: task hung in rfkill_unregister run #4: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in misc_open run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v5.18 testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: c46227d6f81387cf485729b1e5ee092a8e2f8517c09ba6e8134674ba4de455a8 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #3: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #4: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #5: crashed: INFO: task hung in rfkill_sync_work run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v5.17 testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 3b908195cced496262e319c10e11e75328a7d3d3559ff8458ffa25ea8b8e89a5 run #0: crashed: INFO: task hung in rfkill_sync_work run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in rfkill_unregister run #3: crashed: INFO: task hung in rfkill_unregister run #4: crashed: INFO: task hung in rfkill_sync_work run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v5.16 testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 941c6626e8d0189fe7ca36ff05643d78acea807001eb78055fac25245f217182 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #3: crashed: INFO: task hung in rfkill_sync_work run #4: crashed: INFO: task hung in rfkill_unregister run #5: crashed: INFO: task hung in misc_open run #6: crashed: INFO: task hung in misc_open run #7: crashed: INFO: task hung in rfkill_sync_work run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker testing release v5.15 testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 80213040ea75f1d9a10781bf1a60a1746953eed62fe1772502c0de9e0896a12d all runs: OK # git bisect start df0cc57e057f18e44dac8e6c18aba47ab53202f9 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 7870 revisions left to test after this (roughly 13 steps) [2219b0ceefe835b92a8a74a73fe964aa052742a2] Merge tag 'soc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 2219b0ceefe835b92a8a74a73fe964aa052742a2 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 4337c706b716f1eb46f425303109e04e6ea85f208f2165ec984af69929113a28 all runs: OK # git bisect good 2219b0ceefe835b92a8a74a73fe964aa052742a2 Bisecting: 3942 revisions left to test after this (roughly 12 steps) [206825f50f908771934e1fba2bfc2e1f1138b36a] Merge tag 'mtd/for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux testing commit 206825f50f908771934e1fba2bfc2e1f1138b36a gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 00e9694420e86e5137c7497d981ccc5c0b19693321ce6dd9cf34b11f208d7bca all runs: OK # git bisect good 206825f50f908771934e1fba2bfc2e1f1138b36a Bisecting: 1971 revisions left to test after this (roughly 11 steps) [4e1fddc98d2585ddd4792b5e44433dcee7ece001] tcp_cubic: fix spurious Hystart ACK train detections for not-cwnd-limited flows testing commit 4e1fddc98d2585ddd4792b5e44433dcee7ece001 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 780b23aacd37dbb54426c43051d8e2109d1d71886cd5ace0e773e4abf6b13159 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #3: crashed: INFO: task hung in rfkill_unregister run #4: crashed: INFO: task hung in rfkill_unregister run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker # git bisect bad 4e1fddc98d2585ddd4792b5e44433dcee7ece001 Bisecting: 989 revisions left to test after this (roughly 10 steps) [dbf49896187fd58c577fa1574a338e4f3672b4b2] Merge branch 'akpm' (patches from Andrew) testing commit dbf49896187fd58c577fa1574a338e4f3672b4b2 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 331483d6ebdaddd8dfab66ff9d7b6e727a4643d4887ab00fd6f887028b85dc8c all runs: OK # git bisect good dbf49896187fd58c577fa1574a338e4f3672b4b2 Bisecting: 492 revisions left to test after this (roughly 9 steps) [0ecca62beb12eeb13965ed602905c8bf53ac93d0] Merge tag 'ceph-for-5.16-rc1' of git://github.com/ceph/ceph-client testing commit 0ecca62beb12eeb13965ed602905c8bf53ac93d0 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 4b70856a4f23819df259cd034e60f6d611008671b6a8ab268b09d1b9cafa17fd all runs: OK # git bisect good 0ecca62beb12eeb13965ed602905c8bf53ac93d0 Bisecting: 249 revisions left to test after this (roughly 8 steps) [7d5775d49e4a488bc8a07e5abb2b71a4c28aadbb] Merge tag 'printk-for-5.16-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux testing commit 7d5775d49e4a488bc8a07e5abb2b71a4c28aadbb gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 02c5d4243bdd6d7cce81fcac52a7da118537417f85fa9c77694946114cf97880 all runs: OK # git bisect good 7d5775d49e4a488bc8a07e5abb2b71a4c28aadbb Bisecting: 144 revisions left to test after this (roughly 7 steps) [c7521d3aa2fa7fc785682758c99b5bcae503f6be] ptp: ocp: Fix a couple NULL vs IS_ERR() checks testing commit c7521d3aa2fa7fc785682758c99b5bcae503f6be gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ffcca9440d2cd69cac81cd4a53f0da40c6b237d9ed244697325a3a1df17f8605 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in misc_open run #2: crashed: INFO: task hung in rfkill_sync_work run #3: crashed: INFO: task hung in misc_open run #4: crashed: INFO: task hung in misc_open run #5: crashed: INFO: task hung in misc_open run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker # git bisect bad c7521d3aa2fa7fc785682758c99b5bcae503f6be Bisecting: 53 revisions left to test after this (roughly 6 steps) [f083ec3160325b6eb32907279bf2960566c2b585] Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf testing commit f083ec3160325b6eb32907279bf2960566c2b585 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 39310c968af1685af1d607526365768ec4b7f157e2f2384939003399948cd7d4 all runs: OK # git bisect good f083ec3160325b6eb32907279bf2960566c2b585 Bisecting: 24 revisions left to test after this (roughly 5 steps) [9311ccef2782488ab58676c8282f9f71d01cebf5] Merge tag 'mlx5-fixes-2021-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux testing commit 9311ccef2782488ab58676c8282f9f71d01cebf5 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: c8e84cc50f24e4acff2b0765c74eaffecc102fe8541ad368a30b93416009c4a1 all runs: OK # git bisect good 9311ccef2782488ab58676c8282f9f71d01cebf5 Bisecting: 12 revisions left to test after this (roughly 4 steps) [fec1faf221f61118aa52f44c65a13c3e173a64c2] devlink: Don't throw an error if flash notification sent before devlink visible testing commit fec1faf221f61118aa52f44c65a13c3e173a64c2 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 787cf84a847054fa4ea3f51c1d2b1f678c8058a2695d6953d9e59086a691688e run #0: crashed: INFO: task hung in rfkill_register run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #3: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #4: crashed: INFO: task hung in misc_open run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_register run #8: crashed: INFO: task hung in rfkill_unregister run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker # git bisect bad fec1faf221f61118aa52f44c65a13c3e173a64c2 Bisecting: 5 revisions left to test after this (roughly 3 steps) [86cdf8e38792545161dbe3350a7eced558ba4d15] NFC: reorganize the functions in nci_request testing commit 86cdf8e38792545161dbe3350a7eced558ba4d15 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 556ca467f4d4da984e9db218ec8525d1267938e99b728b4f90f9659f40918193 all runs: OK # git bisect good 86cdf8e38792545161dbe3350a7eced558ba4d15 Bisecting: 2 revisions left to test after this (roughly 2 steps) [a280ef90af01dc133d0a52387e563015686d6294] octeontx2-af: debugfs: don't corrupt user memory testing commit a280ef90af01dc133d0a52387e563015686d6294 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: a1e448e8633bfce5f9202b1006d6440a7c25fcd76b1e1324721b147bfa59afa0 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_register run #2: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #3: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #4: crashed: INFO: task hung in rfkill_unregister run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_sync_work run #8: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker # git bisect bad a280ef90af01dc133d0a52387e563015686d6294 Bisecting: 0 revisions left to test after this (roughly 1 step) [48b71a9e66c2eab60564b1b1c85f4928ed04e406] NFC: add NCI_UNREG flag to eliminate the race testing commit 48b71a9e66c2eab60564b1b1c85f4928ed04e406 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: a1e448e8633bfce5f9202b1006d6440a7c25fcd76b1e1324721b147bfa59afa0 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_sync_work run #2: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #3: crashed: INFO: task hung in rfkill_sync_work run #4: crashed: INFO: task hung in rfkill_fop_open run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in misc_open run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker # git bisect bad 48b71a9e66c2eab60564b1b1c85f4928ed04e406 Bisecting: 0 revisions left to test after this (roughly 0 steps) [3e3b5dfcd16a3e254aab61bd1e8c417dd4503102] NFC: reorder the logic in nfc_{un,}register_device testing commit 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: c3f5379f0d9668c0ff8efb25e430c3511750feedbd01221cc719126028e72148 run #0: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #1: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #2: crashed: INFO: task hung in misc_open run #3: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #4: crashed: INFO: task hung in rfkill_fop_open run #5: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #6: crashed: INFO: task hung in misc_open run #7: crashed: INFO: task hung in rfkill_global_led_trigger_worker run #8: crashed: INFO: task hung in rfkill_sync_work run #9: crashed: INFO: task hung in rfkill_global_led_trigger_worker # git bisect bad 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 is the first bad commit commit 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 Author: Lin Ma Date: Tue Nov 16 23:26:52 2021 +0800 NFC: reorder the logic in nfc_{un,}register_device There is a potential UAF between the unregistration routine and the NFC netlink operations. The race that cause that UAF can be shown as below: (FREE) | (USE) nfcmrvl_nci_unregister_dev | nfc_genl_dev_up nci_close_device | nci_unregister_device | nfc_get_device nfc_unregister_device | nfc_dev_up rfkill_destory | device_del | rfkill_blocked ... | ... The root cause for this race is concluded below: 1. The rfkill_blocked (USE) in nfc_dev_up is supposed to be placed after the device_is_registered check. 2. Since the netlink operations are possible just after the device_add in nfc_register_device, the nfc_dev_up() can happen anywhere during the rfkill creation process, which leads to data race. This patch reorder these actions to permit 1. Once device_del is finished, the nfc_dev_up cannot dereference the rfkill object. 2. The rfkill_register need to be placed after the device_add of nfc_dev because the parent device need to be created first. So this patch keeps the order but inject device_lock to prevent the data race. Signed-off-by: Lin Ma Fixes: be055b2f89b5 ("NFC: RFKILL support") Reviewed-by: Jakub Kicinski Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20211116152652.19217-1-linma@zju.edu.cn Signed-off-by: Jakub Kicinski net/nfc/core.c | 32 ++++++++++++++++++-------------- 1 file changed, 18 insertions(+), 14 deletions(-) culprit signature: c3f5379f0d9668c0ff8efb25e430c3511750feedbd01221cc719126028e72148 parent signature: 556ca467f4d4da984e9db218ec8525d1267938e99b728b4f90f9659f40918193 revisions tested: 22, total time: 5h29m58.025269697s (build: 2h31m15.512657179s, test: 2h54m25.669841842s) first bad commit: 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 NFC: reorder the logic in nfc_{un,}register_device recipients (to): ["krzysztof.kozlowski@canonical.com" "kuba@kernel.org" "linma@zju.edu.cn"] recipients (cc): [] crash: INFO: task hung in rfkill_global_led_trigger_worker INFO: task kworker/1:4:3624 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:24896 pid: 3624 ppid: 2 flags:0x00004000 Workqueue: events rfkill_global_led_trigger_worker Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 rfkill_global_led_trigger_worker+0x10/0xf0 net/rfkill/core.c:180 process_one_work+0x87f/0x1450 kernel/workqueue.c:2298 worker_thread+0x598/0x1040 kernel/workqueue.c:2445 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.4:4079 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:24024 pid: 4079 ppid: 1 flags:0x20000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x429/0x1040 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x9f8/0x22a0 fs/namei.c:3559 do_filp_open+0x199/0x3d0 fs/namei.c:3586 do_sys_openat2+0x11e/0x400 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_compat_sys_openat fs/open.c:1288 [inline] __se_compat_sys_openat fs/open.c:1286 [inline] __ia32_compat_sys_openat+0x11a/0x1d0 fs/open.c:1286 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7463549 RSP: 002b:00000000ffe8bab0 EFLAGS: 00000286 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f73a76c4 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7452000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.0:4080 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:23328 pid: 4080 ppid: 1 flags:0x20000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 rfkill_fop_open+0xee/0x6c0 net/rfkill/core.c:1148 misc_open+0x2f0/0x410 drivers/char/misc.c:141 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x429/0x1040 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x9f8/0x22a0 fs/namei.c:3559 do_filp_open+0x199/0x3d0 fs/namei.c:3586 do_sys_openat2+0x11e/0x400 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_compat_sys_openat fs/open.c:1288 [inline] __se_compat_sys_openat fs/open.c:1286 [inline] __ia32_compat_sys_openat+0x11a/0x1d0 fs/open.c:1286 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf741a549 RSP: 002b:00000000fff71530 EFLAGS: 00000282 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f735e6c4 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7409000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.3:4081 blocked for more than 144 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:24024 pid: 4081 ppid: 1 flags:0x20000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x429/0x1040 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x9f8/0x22a0 fs/namei.c:3559 do_filp_open+0x199/0x3d0 fs/namei.c:3586 do_sys_openat2+0x11e/0x400 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_compat_sys_openat fs/open.c:1288 [inline] __se_compat_sys_openat fs/open.c:1286 [inline] __ia32_compat_sys_openat+0x11a/0x1d0 fs/open.c:1286 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf73d0549 RSP: 002b:00000000fff85cd0 EFLAGS: 00000286 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f73146c4 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f73bf000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.1:4087 blocked for more than 144 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:23664 pid: 4087 ppid: 1 flags:0x20004004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x429/0x1040 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x9f8/0x22a0 fs/namei.c:3559 do_filp_open+0x199/0x3d0 fs/namei.c:3586 do_sys_openat2+0x11e/0x400 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_compat_sys_openat fs/open.c:1288 [inline] __se_compat_sys_openat fs/open.c:1286 [inline] __ia32_compat_sys_openat+0x11a/0x1d0 fs/open.c:1286 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf749b549 RSP: 002b:00000000ff881080 EFLAGS: 00000286 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f73df6c4 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f748a000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.5:4088 blocked for more than 144 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:24024 pid: 4088 ppid: 1 flags:0x20000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x429/0x1040 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x9f8/0x22a0 fs/namei.c:3559 do_filp_open+0x199/0x3d0 fs/namei.c:3586 do_sys_openat2+0x11e/0x400 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_compat_sys_openat fs/open.c:1288 [inline] __se_compat_sys_openat fs/open.c:1286 [inline] __ia32_compat_sys_openat+0x11a/0x1d0 fs/open.c:1286 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7442549 RSP: 002b:00000000ff8baab0 EFLAGS: 00000286 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f73866c4 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7431000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.2:4276 blocked for more than 145 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28144 pid: 4276 ppid: 4077 flags:0x20004004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 rfkill_unregister+0xc6/0x290 net/rfkill/core.c:1117 nfc_unregister_device+0x69/0x2b0 net/nfc/core.c:1166 virtual_ncidev_close+0x53/0x70 drivers/nfc/virtual_ncidev.c:163 __fput+0x204/0x8d0 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf73e6549 RSP: 002b:00000000fff35ed0 EFLAGS: 00000286 ORIG_RAX: 0000000000000006 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 00000000f73d5000 RDI: 00000000000128f3 RBP: 00000000f74040c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.2:4277 blocked for more than 145 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26240 pid: 4277 ppid: 4077 flags:0x20004004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa5a/0x48f0 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 device_lock include/linux/device.h:760 [inline] nfc_dev_down+0x1f/0x270 net/nfc/core.c:143 nfc_rfkill_set_block+0x15/0x90 net/nfc/core.c:179 rfkill_set_block+0x191/0x440 net/rfkill/core.c:344 rfkill_fop_write+0x1c7/0x3f0 net/rfkill/core.c:1268 vfs_write+0x1c4/0x900 fs/read_write.c:588 ksys_write+0x171/0x1d0 fs/read_write.c:643 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf73e6549 RSP: 002b:00000000f66865cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000080 RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b17ca80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 2 locks held by getty/3291: #0: ffff88802300e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900027a32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9e1/0xee0 drivers/tty/n_tty.c:2113 3 locks held by kworker/1:4/3624: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2269 #1: ffffc900024dfdb8 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2273 #2: ffffffff8ccb1e08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x10/0xf0 net/rfkill/core.c:180 1 lock held by syz-executor.4/4079: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 2 locks held by syz-executor.0/4080: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 #1: ffffffff8ccb1e08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0xee/0x6c0 net/rfkill/core.c:1148 1 lock held by syz-executor.3/4081: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.1/4087: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.5/4088: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 2 locks held by syz-executor.2/4276: #0: ffff88807b994190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #0: ffff88807b994190 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x3d/0x2b0 net/nfc/core.c:1164 #1: ffffffff8ccb1e08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xc6/0x290 net/rfkill/core.c:1117 2 locks held by syz-executor.2/4277: #0: ffffffff8ccb1e08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0xb9/0x3f0 net/rfkill/core.c:1260 #1: ffff88807b994190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #1: ffff88807b994190 (&dev->mutex){....}-{3:3}, at: nfc_dev_down+0x1f/0x270 net/nfc/core.c:143 1 lock held by syz-executor.2/4959: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.4/4965: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.3/4966: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.0/4967: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.1/4968: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.5/4969: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.2/4972: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.3/4976: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.4/4979: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.1/4980: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.5/4981: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.0/4982: #0: ffffffff8bb923a8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11a/0x160 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0x88c/0xbf0 kernel/hung_task.c:295 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9 Comm: kworker/u4:1 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:check_wait_context kernel/locking/lockdep.c:4725 [inline] RIP: 0010:__lock_acquire+0x64f/0x54a0 kernel/locking/lockdep.c:4977 Code: ff df 48 c1 e8 03 4c 8b 74 24 28 4c 01 f8 48 89 44 24 60 eb 66 48 8d 04 5b 48 c1 e0 06 48 05 a0 0e b8 8f 48 8d b8 b8 00 00 00 <48> 89 fa 48 c1 ea 03 42 0f b6 14 3a 84 d2 74 06 0f 8e 5f 2b 00 00 RSP: 0018:ffffc90000ce77d8 EFLAGS: 00000082 RAX: ffffffff8fb813e0 RBX: 0000000000000007 RCX: ffffffff8154846d RDX: fffffbfff1f70151 RSI: 0000000000000008 RDI: ffffffff8fb81498 RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff8fb80a87 R10: fffffbfff1f70150 R11: 0000000000000000 R12: 0000000000000002 R13: ffff888010e80000 R14: ffff888010e80a60 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f54b69e0990 CR3: 000000000ae8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5637 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] __get_locked_pte+0x203/0x3c0 mm/memory.c:1722 get_locked_pte include/linux/mm.h:2160 [inline] __text_poke+0x1ae/0x8c0 arch/x86/kernel/alternative.c:1000 text_poke_bp_batch+0x2eb/0x560 arch/x86/kernel/alternative.c:1310 text_poke_flush arch/x86/kernel/alternative.c:1451 [inline] text_poke_flush arch/x86/kernel/alternative.c:1448 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0x100/0x160 kernel/jump_label.c:207 static_key_disable+0x11/0x20 kernel/jump_label.c:215 toggle_allocation_gate mm/kfence/core.c:746 [inline] toggle_allocation_gate+0x154/0x310 mm/kfence/core.c:724 process_one_work+0x87f/0x1450 kernel/workqueue.c:2298 worker_thread+0x598/0x1040 kernel/workqueue.c:2445 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295