====================================== | [ 58.244796][ T592] ================================================================== | [ 58.245157][ T592] BUG: KASAN: null-ptr-deref in try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) | [ 58.245458][ T592] Write of size 8 at addr 0000000000000000 by task ip/592 | [ 58.245716][ T592] [ 58.245830][ T592] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 58.245839][ T592] Call Trace: [ 58.245844][ T592] [ 58.245847][ T592] dump_stack_lvl (lib/dump_stack.c:123) [ 58.245868][ T592] ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 58.245872][ T592] kasan_report (mm/kasan/report.c:597) [ 58.245888][ T592] ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 58.245894][ T592] kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200) [ 58.245898][ T592] try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 58.245902][ T592] __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364) [ 58.245906][ T592] ? enable_delayed_work (kernel/workqueue.c:4359) [ 58.245911][ T592] ? queue_delayed_work_on (kernel/workqueue.c:2590) [ 58.245915][ T592] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 58.245932][ T592] __cancel_work_sync (kernel/workqueue.c:4383) [ 58.245937][ T592] __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2)) [ 58.245950][ T592] ? netdev_notify_peers (net/core/dev.c:1891) [ 58.245954][ T592] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 58.245962][ T592] __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924) [ 58.245967][ T592] ? netif_set_allmulti (net/core/dev.c:9890) [ 58.245970][ T592] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746) [ 58.245982][ T592] netif_change_flags (net/core/dev.c:9989) [ 58.245985][ T592] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 58.245990][ T592] do_setlink.constprop.0 (net/core/rtnetlink.c:3158) [ 58.246000][ T592] ? rtnl_newlink_create (net/core/rtnetlink.c:3036) [ 58.246006][ T592] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 58.246014][ T592] ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876) [ 58.246022][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.246026][ T592] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) [ 58.246033][ T592] ? __mutex_handoff (kernel/locking/mutex.c:88) [ 58.246037][ T592] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 58.246041][ T592] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 58.246045][ T592] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) [ 58.246049][ T592] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760) [ 58.246056][ T592] ? __create_object (mm/kmemleak.c:786) [ 58.246063][ T592] ? __lock_release (kernel/locking/lockdep.c:5536) [ 58.246065][ T592] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071) [ 58.246069][ T592] ? ww_mutex_lock (kernel/locking/mutex.c:759) [ 58.246073][ T592] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) [ 58.246089][ T592] ? __rtnl_newlink (net/core/rtnetlink.c:3922) [ 58.246095][ T592] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073) [ 58.246100][ T592] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 58.246104][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.246109][ T592] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 58.246113][ T592] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 58.246116][ T592] ? __lock_release (kernel/locking/lockdep.c:5536) [ 58.246120][ T592] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 58.246123][ T592] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 58.246128][ T592] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 58.246131][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.246138][ T592] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 58.246147][ T592] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 58.246152][ T592] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 58.246159][ T592] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 58.246162][ T592] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 58.246165][ T592] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 58.246169][ T592] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 58.246173][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.246178][ T592] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 58.246182][ T592] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 58.246185][ T592] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 58.246194][ T592] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 58.246197][ T592] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 58.246205][ T592] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 58.246207][ T592] ? __copy_msghdr (net/socket.c:2556) [ 58.246217][ T592] ___sys_sendmsg (net/socket.c:2686) [ 58.246220][ T592] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 58.246223][ T592] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125) [ 58.246230][ T592] ? copy_msghdr_from_user (net/socket.c:2673) [ 58.246234][ T592] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 58.246239][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.246244][ T592] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 58.246248][ T592] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 58.246263][ T592] ? __lock_release (kernel/locking/lockdep.c:5536) [ 58.246269][ T592] __sys_sendmsg (net/socket.c:2716) [ 58.246272][ T592] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 58.246274][ T592] ? __sys_sendmsg_sock (net/socket.c:2701) [ 58.246282][ T592] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 58.246286][ T592] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 58.246296][ T592] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 58.246305][ T592] RIP: 0033:0x7f6fdb75f1d7 [ 58.246312][ T592] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 58.246315][ T592] RSP: 002b:00007ffc2d40e288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.246323][ T592] RAX: ffffffffffffffda RBX: 00007ffc2d40e9c0 RCX: 00007f6fdb75f1d7 [ 58.246326][ T592] RDX: 0000000000000000 RSI: 00007ffc2d40e2f0 RDI: 0000000000000005 [ 58.246327][ T592] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 58.246329][ T592] R10: 00007f6fdb65b510 R11: 0000000000000246 R12: 0000000000000003 [ 58.246331][ T592] R13: 00000000691cb972 R14: 0000000000499600 R15: 0000000000000000 | [ 58.264976][ T592] #PF: error_code(0x0002) - not-present page | [ 58.265198][ T592] PGD 4be5067 P4D 4be5067 PUD 1013d067 PMD 0 | [ 58.265435][ T592] Oops: Oops: 0002 [#1] SMP KASAN | [ 58.266020][ T592] Tainted: [B]=BAD_PAGE [ 58.266159][ T592] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 58.266390][ T592] RIP: 0010:try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 58.266642][ T592] Code: 00 41 89 c0 b8 01 00 00 00 45 85 c0 74 0f 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 08 00 00 00 48 89 df e8 1f 93 82 00 48 0f ba 2b 00 72 11 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d 41 5e All code ======== 0: 00 41 89 add %al,-0x77(%rcx) 3: c0 b8 01 00 00 00 45 sarb $0x45,0x1(%rax) a: 85 c0 test %eax,%eax c: 74 0f je 0x1d e: 48 83 c4 10 add $0x10,%rsp 12: 5b pop %rbx 13: 5d pop %rbp 14: 41 5c pop %r12 16: 41 5d pop %r13 18: 41 5e pop %r14 1a: 41 5f pop %r15 1c: c3 ret 1d: be 08 00 00 00 mov $0x8,%esi 22: 48 89 df mov %rbx,%rdi 25: e8 1f 93 82 00 call 0x829349 2a:* f0 48 0f ba 2b 00 lock btsq $0x0,(%rbx) <-- trapping instruction 30: 72 11 jb 0x43 32: 48 83 c4 10 add $0x10,%rsp 36: 31 c0 xor %eax,%eax 38: 5b pop %rbx 39: 5d pop %rbp 3a: 41 5c pop %r12 3c: 41 5d pop %r13 3e: 41 5e pop %r14 Code starting with the faulting instruction =========================================== 0: f0 48 0f ba 2b 00 lock btsq $0x0,(%rbx) 6: 72 11 jb 0x19 8: 48 83 c4 10 add $0x10,%rsp c: 31 c0 xor %eax,%eax e: 5b pop %rbx f: 5d pop %rbp 10: 41 5c pop %r12 12: 41 5d pop %r13 14: 41 5e pop %r14 [ 58.267292][ T592] RSP: 0018:ffffc90001756f30 EFLAGS: 00010046 [ 58.267512][ T592] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa2c49b8a [ 58.267806][ T592] RDX: fffffbfff4f2cacd RSI: 0000000000000008 RDI: ffffffffa7965660 [ 58.268088][ T592] RBP: ffffc90001756f98 R08: 0000000000000001 R09: fffffbfff4f2cacc [ 58.268359][ T592] R10: ffffffffa7965667 R11: ffffc90001756a00 R12: 0000000000000000 [ 58.268638][ T592] R13: 0000000000000286 R14: ffff888008a39000 R15: dffffc0000000000 [ 58.268929][ T592] FS: 00007f6fdb591800(0000) GS:ffff8880c5707000(0000) knlGS:0000000000000000 [ 58.269254][ T592] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.269476][ T592] CR2: 0000000000000000 CR3: 000000000c8fe001 CR4: 0000000000772ef0 [ 58.269764][ T592] PKRU: 55555554 [ 58.269907][ T592] Call Trace: [ 58.270067][ T592] [ 58.270160][ T592] __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364) [ 58.270357][ T592] ? enable_delayed_work (kernel/workqueue.c:4359) [ 58.270540][ T592] ? queue_delayed_work_on (kernel/workqueue.c:2590) [ 58.270745][ T592] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 58.270935][ T592] __cancel_work_sync (kernel/workqueue.c:4383) [ 58.271111][ T592] __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2)) [ 58.271294][ T592] ? netdev_notify_peers (net/core/dev.c:1891) [ 58.271479][ T592] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 58.271686][ T592] __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924) [ 58.271881][ T592] ? netif_set_allmulti (net/core/dev.c:9890) [ 58.272060][ T592] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746) [ 58.272252][ T592] netif_change_flags (net/core/dev.c:9989) [ 58.272424][ T592] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 58.272613][ T592] do_setlink.constprop.0 (net/core/rtnetlink.c:3158) [ 58.272803][ T592] ? rtnl_newlink_create (net/core/rtnetlink.c:3036) [ 58.273011][ T592] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 58.273201][ T592] ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876) [ 58.273385][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.273562][ T592] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) [ 58.273766][ T592] ? __mutex_handoff (kernel/locking/mutex.c:88) [ 58.273951][ T592] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 58.274133][ T592] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 58.274319][ T592] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) [ 58.274493][ T592] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760) [ 58.274700][ T592] ? __create_object (mm/kmemleak.c:786) [ 58.274889][ T592] ? __lock_release (kernel/locking/lockdep.c:5536) [ 58.275062][ T592] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071) [ 58.275247][ T592] ? ww_mutex_lock (kernel/locking/mutex.c:759) [ 58.275419][ T592] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) [ 58.275612][ T592] ? __rtnl_newlink (net/core/rtnetlink.c:3922) [ 58.275804][ T592] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073) [ 58.275989][ T592] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 58.276172][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.276354][ T592] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 58.276533][ T592] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 58.276733][ T592] ? __lock_release (kernel/locking/lockdep.c:5536) [ 58.276926][ T592] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 58.277099][ T592] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 58.277289][ T592] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 58.277465][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.277669][ T592] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 58.277854][ T592] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 58.278032][ T592] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 58.278212][ T592] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 58.278387][ T592] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 58.278562][ T592] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 58.278770][ T592] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 58.278963][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.279138][ T592] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 58.279323][ T592] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 58.279496][ T592] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 58.279701][ T592] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 58.279890][ T592] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 58.280065][ T592] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 58.280291][ T592] ? __copy_msghdr (net/socket.c:2556) [ 58.280481][ T592] ___sys_sendmsg (net/socket.c:2686) [ 58.280691][ T592] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 58.280890][ T592] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125) [ 58.281109][ T592] ? copy_msghdr_from_user (net/socket.c:2673) [ 58.281404][ T592] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 58.281595][ T592] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 58.281786][ T592] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 58.281976][ T592] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 58.282267][ T592] ? __lock_release (kernel/locking/lockdep.c:5536) [ 58.282442][ T592] __sys_sendmsg (net/socket.c:2716) [ 58.282630][ T592] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 58.282871][ T592] ? __sys_sendmsg_sock (net/socket.c:2701) [ 58.283167][ T592] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 58.283349][ T592] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 58.283527][ T592] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 58.283783][ T592] RIP: 0033:0x7f6fdb75f1d7 [ 58.284088][ T592] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 58.284850][ T592] RSP: 002b:00007ffc2d40e288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.285120][ T592] RAX: ffffffffffffffda RBX: 00007ffc2d40e9c0 RCX: 00007f6fdb75f1d7 [ 58.285385][ T592] RDX: 0000000000000000 RSI: 00007ffc2d40e2f0 RDI: 0000000000000005 [ 58.285795][ T592] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 58.286073][ T592] R10: 00007f6fdb65b510 R11: 0000000000000246 R12: 0000000000000003 Finger prints: try_to_grab_pending:__cancel_work:__cancel_work_sync:__dev_close_many:__dev_change_flags kasan_report:kasan_check_range:try_to_grab_pending:__cancel_work:__cancel_work_sync